GIVING BRAINLIEST !!!
need help with alg2 homework pleasee, no explanations btw thanks check image below!
Answer:
1)
A) 0.541 or 0.54(by rounding)
B) 0.675
C)Yes, they are independent because someone doesnt have to attend prom to be a senior and vice versa
2)
a) 0.29
b) 0.04
c) Yes, they are independent because you do not have to live in Long Beach to recommend the provider and vice versa
Step-by-step explanation:
A building is constructed using bricks that can be modeled as right rectangular prisms with a dimension of
8
8 in by
3
1
2
3
2
1
in by
3
3 in. If the bricks cost $0.10 per cubic inch, find the cost of 1950 bricks. Round your answer to the nearest cent.
So the cost of 1950 bricks is $163.80.
For the given right rectangular prism,
Dimension = 8 in x 3[tex]\frac{1}{2}[/tex] in x 3 in
Then,
Length = 8 in
Width = 3[tex]\frac{1}{2}[/tex] in
Height = 3 in
Now find the volume of one brick by multiplying its length, width, and height together, so,
⇒ 8 in x 7/2 in x 3 in = 84 in³
Now calculate the total volume of 1950 bricks,
⇒ 1950 x 84 in = 163800 in³
Now we can find the total cost of the bricks by multiplying the total volume by the cost per cubic inch,
⇒ 163800 in x $0.10/in = $16,380.00
Finally, round our answer to the nearest cent,
we can divide by 100 and round to two decimal places,
⇒ $16,380.00 / 100 = $163.80
So the cost of 1950 bricks, rounded to the nearest cent, is $163.80.
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(q17) A geologist finds out that a radioactive substance A that he found in the caves of Africa decays at a rate of 0.03 percent every year. What is the probability that an atom of this substance chosen at random will decay in the next 70 years?
The probability of an atom of substance A chosen at random decaying in the next 70 years is 2.07%.
The decay rate of a radioactive substance can be calculated using the formula: N=N0e−λt, where N0 is the initial number of radioactive atoms, N is the remaining number of radioactive atoms,
t is the time in years, and λ is the decay constant expressed in inverse years.
The probability of a given radioactive atom decaying during a specific period can be found using the formula: P = 1 - e^(-λt).
In this case, the decay rate of substance A is 0.03% per year, which can be expressed as a decimal fraction of 0.0003.
Therefore, the decay constant λ = 0.0003.
The time period of interest is 70 years.
Therefore, the probability of an atom decaying during this period can be calculated as:
P = 1 - e^(-0.0003*70)P
= 1 - e^(-0.021)P
= 0.0207 or 2.07%
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Someone explain what quantum entanglement is with ur own words
Answer:
Some points about quantum entanglement in my own words are:
Quantum entanglement is a physical phenomenon that occurs when pairs or groups of particles are generated or interact in ways such that the quantum state of each particle of the pair or group cannot be described independently of the state of the others, even when the particles are separated by a large distance.The topic of quantum entanglement is at the heart of the disparity between classical and quantum physics: entanglement is a primary feature of quantum mechanics lacking in classical mechanics.Quantum entanglement is a highly counterintuitive phenomenon that has profound implications for our understanding of the universe.Quantum entanglement has the potential to be used in a variety of applications, such as quantum computing and quantum communication.Quantum entanglement is a rapidly developing field of research, and scientists are still learning about its many implications.Here are some additional details about quantum entanglement:
Quantum entanglement is a consequence of the wave-like nature of matter and energy at the quantum level.When two particles are entangled, they share a single quantum state. This means that if you measure the state of one particle, you will instantly know the state of the other particle, no matter how far apart they are.Quantum entanglement is not limited to particles. It can also occur between atoms, molecules, and even larger objects.Quantum entanglement is a very real phenomenon that has been verified in numerous experiments.Quantum entanglement has the potential to revolutionize the way we think about information and communication. It could be used to create new types of computers and communication networks that are far more powerful than anything that exists today.Quantum entanglement is a fascinating and mysterious phenomenon that is still not fully understood. However, it has the potential to change the world in many ways
For each of the following annuities, calculate the annuity payment.
(Future Value=25,850, Year= 8, interest rate=8% annuity payment =?)
(Future Value=1,130,000, Year= 43, interest rate=10% annuity payment =?)
(Future Value=976,000, Year= 29, interest rate=11% annuity payment =?)
(Future Value=149,000 Year= 16, interest rate=7% annuity payment =?)
Step-by-step explanation:
To calculate the annuity payment for each of the given scenarios, we can use the formula for the present value of an ordinary annuity:
Annuity Payment = Future Value / [(1 - (1 + r)^(-n)) / r]
Where:
Future Value = Future value of the annuity
r = Interest rate per period (in decimal form)
n = Total number of periods
Let's calculate the annuity payment for each scenario:
Scenario 1:
Future Value = $25,850
Year = 8
Interest rate = 8% (0.08 as a decimal)
Annuity Payment = $25,850 / [(1 - (1 + 0.08)^(-8)) / 0.08]
Scenario 2:
Future Value = $1,130,000
Year = 43
Interest rate = 10% (0.10 as a decimal)
Annuity Payment = $1,130,000 / [(1 - (1 + 0.10)^(-43)) / 0.10]
Scenario 3:
Future Value = $976,000
Year = 29
Interest rate = 11% (0.11 as a decimal)
Annuity Payment = $976,000 / [(1 - (1 + 0.11)^(-29)) / 0.11]
Scenario 4:
Future Value = $149,000
Year = 16
Interest rate = 7% (0.07 as a decimal)
Annuity Payment = $149,000 / [(1 - (1 + 0.07)^(-16)) / 0.07]
After performing the calculations, you will obtain the annuity payment for each scenario.
I hope I was helpful
what is the product: -4[ 8 -1 -5 9
A: [-32 4 20 -36] B: [32 -4 -20 36] C: [4 -5 -9 5] C: [-32 -1 -5 9]
Answer:
A
Step-by-step explanation:
To find the product of -4 and the vector [8, -1, -5, 9], you need to multiply each element of the vector by -4. Here's the calculation:
-4 * 8 = -32
-4 * -1 = 4
-4 * -5 = 20
-4 * 9 = -36
Therefore, the product of -4 and [8, -1, -5, 9] is:
[-32, 4, 20, -36]
So the correct answer is A: [-32, 4, 20, -36].
An open box is to be constructed from a square piece of sheet metal by removing a square of side 5 feet from each corner and turning up the edges. If the box is to hold 720 cubic feet, what should be the dimensions of the sheet metal?
Let's solve this problem step by step.
1. Start by drawing a diagram to visualize the problem. We have a square piece of sheet metal, and we need to remove squares from each corner to create an open box.
Let's assume the side length of the original square sheet metal is "x" feet.
After removing squares of side length 5 feet from each corner, the remaining dimensions of the sheet metal will be (x - 10) feet.
The height of the box will be 5 feet.
Therefore, the dimensions of the open box will be (x - 10) feet (length and width), 5 feet (height).
2. Use the formula for the volume of a rectangular box to set up an equation:
Volume = Length x Width x Height
Given that the volume is 720 cubic feet, we can write:
(x - 10) * (x - 10) * 5 = 720
Simplifying the equation:
5(x - 10)^2 = 720
3. Solve the equation to find the value of x:
Divide both sides of the equation by 5:
(x - 10)^2 = 144
Take the square root of both sides:
x - 10 = ±12
Solve for x:
x = 10 + 12 or x = 10 - 12
x = 22 or x = -2
Since we are dealing with lengths, we discard the negative value of x.
Therefore, the side length of the original square sheet metal is 22 feet.
4. Finally, calculate the dimensions of the sheet metal:
Length = Width = x - 10 = 22 - 10 = 12 feet
So, the dimensions of the sheet metal are 12 feet by 12 feet.
Kindly Heart and 5 Star this answer, thanks!The arc length of a sector is equal to one fourth of the radius. Express the arc length s as a function of the area a of the sector.
The arc length of a sector is equal to one fourth of the radius. Express the arc length s as a function of the area a of the sector.
In this relationship, the arc length is inversely Proportional to the area. As the area increases, the arc length decreases, and vice versa.
The relationship between the arc length (s) and the area (a) of a sector, let's start by understanding the formulas for each.
The arc length of a sector can be calculated using the formula:
s = θr
where s is the arc length, θ is the central angle of the sector in radians, and r is the radius.
The area of a sector can be calculated using the formula:
a = (1/2)θr^2
where a is the area, θ is the central angle of the sector in radians, and r is the radius.
Given that the arc length is equal to one fourth of the radius, we can express this relationship as:
s = (1/4)r
Now, let's express the central angle (θ) in terms of the area (a).
From the formula for the area of a sector, we can rearrange it to solve for θ:
a = (1/2)θr^2
Multiplying both sides by 2/r^2, we get:
2a/r^2 = θ
Substituting this value of θ back into the equation for the arc length (s), we have:
s = (1/4)r = (1/4)r(2a/r^2) = (1/2a)r
Therefore, we have expressed the arc length (s) as a function of the area (a) of the sector:
s = (1/2a)r
In this relationship, the arc length is inversely proportional to the area. As the area increases, the arc length decreases, and vice versa.
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If the cos 42° = one half, then the sin 48° = _____. Group of answer choices two thirds, because the angles are complementary 2 over 1, because the angles are supplementary one half, because the angles are complementary 1, because the angles are complementary
The sine of 48 Degrees is equal to one-half.
The cosine of an angle is equal to one-half when the angle is 60 degrees. Therefore, if the cosine of 42 degrees is one-half, it means that the angle of 42 degrees is complementary to the angle of 60 degrees.
Since the angles are complementary, the sine of one angle is equal to the cosine of the other angle. In this case, the sine of 48 degrees will be equal to the cosine of its complementary angle, which is 42 degrees.
Therefore, the sine of 48 degrees is equal to one-half.
The correct answer is: 1/2, because the angles are complementary.
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(q6) A student wants to find the area of the surface obtained by rotating the curve
, about the x-axis. Which of the following gives the correct area?
The correct formula to find the area of the surface obtained by rotating the curve, about the x-axis is S = ∫2πy(x) √(1 + (dy/dx)²) dx.
To find the area of the surface obtained by rotating the curve, about the x-axis, we use the formula given below:
S = ∫2πy(x)ds where ds = √(1 + (dy/dx)²) dx
For the curve y = f(x),
we can use the formula given below:
S = ∫2πf(x) √(1 + (dy/dx)²) dx
The student wants to find the area of the surface obtained by rotating the curve, about the x-axis.
So, the correct formula to find the area of the surface is given below:
S = ∫2πy(x)ds = ∫2πy(x) √(1 + (dy/dx)²) dx
Where the curve is y = f(x).
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Answer:
D) 0.203π square units
Step-by-step explanation:
The area of a surface obtained by rotating the curve about the x-axis in the interval [a, b] is given by the formula:
[tex]\large\boxed{\displaystyle S=\int^{b}_{a}2\pi y\sqrt{1+\left(\dfrac{\text{d}y}{\text{d}x}\right)^2}\; \text{d}x}[/tex]
The given interval is 0 ≤ x ≤ 1. Therefore:
a = 0b = 1The equation of the curve is:
[tex]y=\dfrac{x^3}{3}=\dfrac{1}{3}x^3[/tex]
Differentiate the function using the following differentiation rule:
[tex]\boxed{\begin{minipage}{4.8 cm}\underline{Differentiating $ax^n$}\\\\If $y=ax^n$, then $\dfrac{\text{d}y}{\text{d}x}=nax^{n-1}$\\\end{minipage}}[/tex]
Therefore:
[tex]\dfrac{\text{d}y}{\text{d}x}=3 \cdot \dfrac{1}{3}x^{3-1}=x^2[/tex]
Therefore, the integral is:
[tex]\displaystyle S=\int^{1}_{0}2\pi \left(\dfrac{1}{3}x^3\right)\sqrt{1+\left(x^2\right)^2}\; \text{d}x[/tex]
[tex]\displaystyle S=\int^{1}_{0} \left(\dfrac{2\pi}{3}x^3\right)\sqrt{1+x^4}\; \text{d}x[/tex]
[tex]\displaystyle S=\dfrac{2\pi}{3}\int^{1}_{0} x^3\sqrt{1+x^4}\; \text{d}x[/tex]
To evaluate the definite integral, use the method of substitution.
[tex]\textsf{Let}\;u=1+x^4[/tex]
Find du/dx and rewrite it so that dx is on its own:
[tex]\dfrac{\text{d}u}{\text{d}x}=4x^3 \implies \text{d}x=\dfrac{1}{4x^3}\; \text{d}u[/tex]
Find the limits in terms of u:
[tex]\textsf{When}\; x = 0 \implies u=1+0^4=1[/tex]
[tex]\textsf{When}\; x = 1 \implies u=1+1^4=2[/tex]
Rewrite the original integral in terms of u and du:
[tex]\displaystyle S=\dfrac{2\pi}{3}\int^{2}_{1} x^3\sqrt{u} \cdot \dfrac{1}{4x^3}\; \text{d}u[/tex]
[tex]\displaystyle S=\dfrac{2\pi}{3}\int^{2}_{1} \dfrac{1}{4}\sqrt{u}\; \text{d}u[/tex]
[tex]\displaystyle S=\dfrac{\pi}{6}\int^{2}_{1} \sqrt{u}\; \text{d}u[/tex]
[tex]\displaystyle S=\dfrac{\pi}{6}\int^{2}_{1} u^{\frac{1}{2}}\; \text{d}u[/tex]
Evaluate the integral using the integration rule:
[tex]\boxed{\begin{minipage}{4 cm}\underline{Integrating $x^n$}\\\\$\displaystyle \int x^n\:\text{d}x=\dfrac{x^{n+1}}{n+1}+\text{C}$\end{minipage}}[/tex]
Therefore:
[tex]\displaystyle S=\dfrac{\pi}{6}\left[\vphantom{\dfrac12}\dfrac{u^{\frac{1}{2}+1}}{\frac{1}{2}+1}\right]^{2}_{1}[/tex]
[tex]\displaystyle S=\dfrac{\pi}{6}\left[\vphantom{\dfrac12}\dfrac{u^{\frac{3}{2}}}{\frac{3}{2}}\right]^{2}_{1}[/tex]
[tex]\displaystyle S=\dfrac{\pi}{6}\left[\vphantom{\dfrac12}\dfrac{2u^{\frac{3}{2}}}{3}\right]^{2}_{1}[/tex]
[tex]\displaystyle S=\dfrac{\pi}{6}\left(\dfrac{2(2)^{\frac{3}{2}}}{3}-\dfrac{2(1)^{\frac{3}{2}}}{3}\right)[/tex]
[tex]\displaystyle S=\dfrac{\pi}{6}\left(\dfrac{4\sqrt{2}}{3}-\dfrac{2}{3}\right)[/tex]
[tex]\displaystyle S=\dfrac{\pi}{6}\left(\dfrac{-2+4\sqrt{2}}{3}\right)[/tex]
[tex]\displaystyle S=\left(\dfrac{-1+2\sqrt{2}}{9}\right)\pi[/tex]
[tex]\displaystyle S=0.203\pi[/tex]
Therefore, from the given answer options, the correct area is 0.203π square units.
..................................................................................................
Hi :)
Answer:
The quotient will be decreased by 10
Step-by-step explanation:
720 ÷ 9 = 80
630 ÷ 9 = 70
Hope this helps :) !!!
Answer:
the quotient will decrease by 10 because when you divide 720 by 9 you will get 80 and when you divide 630 by 9 you will get 70. If you minus 8-0 and 70 you will get 10 hope this helps
..............................................................................
Answer:
Debbie average daily change is 8 dollars
Step-by-step explanation:
since he lost 56$ this week (7 days) you have to divide 56 by 7 and your average daily change is 8 dollars.
Answer:
A) - 8 dollars------------------------
Loss in a week is $56, so if we divide it by the number of days, we'll get daily loss amount:
$56/7 = $8The change is - $8, since we are talking about a loss.
The matching choice is A.
3x+4
12. Simplify +
x+2
x²+2x
2x+4
Answer:
[tex]\dfrac{x^2+8x+8}{2x+4}\\\\[/tex]
Step-by-step explanation:
Simplify:
[tex]\dfrac{3x + 4}{x +2}+\dfrac{x^2+2x}{2x+ 4}[/tex]
Multiply the denominator and the numerator of the first term by 2,
[tex]=\dfrac{2*(3x +4)}{2*(x+ 2)}+\dfrac{x^2+2x}{2x+4}\\\\\\=\dfrac{2*3x+2*8}{2*x +2*2}+\dfrac{x^2+2x}{2x+4}\\\\\\=\dfrac{6x+8}{2x+4}+\dfrac{x^2+2x}{2x+4}[/tex]
[tex]\sf = \dfrac{6x+8+x^2+2x}{2x+4}\\\\\text{\bf Combine like terms,}\\\\=\dfrac{x^2+8x+8}{2x+4}\\\\[/tex]
the measures of ABD is (0.2x+52) and the measures of CBD is (0.2x+42) find the value of x
The value of x in the triangle is determined as 45.
What is the value of x?The value of x in the triangle is calculated by applying the following formula,.
The measure of angle ABD = 0.2x + 52
The measure of angle CBD = 0.2x + 42
From the diagram, we can set-up the following equations;
x + 16 = 0.2x + 52
Simplify the equation above, by collecting similar terms;
x - 0.2x = 52 - 16
0.8x = 36
Divide both sides of the equation by " 0.8 "
0.8x / 0.8 = 36/0.8
x = 45
Thus, the value of x in the triangle is calculated by equating the appropriate values to each other.
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2. Write the absolute value of the following. a) | -6 -3 | . b) | 0 - 12 |.
Answer:
a)9. b) 12
Step-by-step explanation:
a) | -6 -3 | .
-6-3 = -9
|-9| =9
b) | 0 - 12 |.
0-12=-12
|-12|=12
A manufacturer is producing metal rods, whose lengths are normally distributed with a mean
of 75.0 cm and a standard deviation of 0.25 cm. If 3000 metal rods are produced, how many
will be between 74.5 cm and 75.5 cm in length?
Therefore, we can expect that approximately 95.45% of the 3000 metal rods produced will fall between 74.5 cm and 75.5 cm in length. To find the actual number, we multiply 0.9545 by 3000, yielding approximately 2864 rods.
To determine how many metal rods will be between 74.5 cm and 75.5 cm in length, we can use the properties of the normal distribution.
Given that the lengths of the metal rods are normally distributed with a mean of 75.0 cm and a standard deviation of 0.25 cm, we can calculate the probability of a rod falling within the specified range.
First, we find the z-scores for the lower and upper limits of the range. The z-score for 74.5 cm is
[tex]\frac{ (74.5 - 75.0) }{ 0.25} = -2,[/tex]
and the z-score for 75.5 cm is
[tex]\frac{(75.5 - 75.0)} { 0.25} = 2.[/tex]
Using a standard normal distribution table or a statistical calculator, we can determine the area under the curve between these z-scores, which represents the probability.
The area between -2 and 2 is approximately 0.9545.
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What’s the answer to If =3+23
, what is
when =1
and =2
?
The value of y when a = 1 and b = 2 is 22.
How to solve an equation?The equation of can be solved as follows: We will substitute the value of a and b in the equation to find the value of y.
Therefore,
y = 3ab + 2b³
Let's find y when a = 1 and b = 2
Hence,
y = 3(1)(2) + 2(2)³
y = 6 + 2(8)
y = 22
Therefore,
y = 22
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my first number is -4 and my fifth number is 8 what is the third number
To find the third number in the sequence given that the first number is -4 and the fifth number is 8, we need to determine the pattern or rule that governs the sequence.
One possible pattern is that the sequence is an arithmetic sequence, where each term is obtained by adding a common difference (d) to the previous term.
Let's calculate the common difference using the first and fifth numbers:
Common difference (d) = 8 - (-4)
= 8 + 4
= 12
Now, we can find the third number by adding the common difference to the first number:
Third number = First number + 2 * Common difference
= -4 + 2 * 12
= -4 + 24
= 20
Therefore, the third number in the sequence is 20.
Kevin was thinking of a number. Kevin adds 5 to it, then doubles it and gets an answer of 48.4. Which of the answers below describes this scenario?
A) x + 5 x 2 = 48.4
B) 10x = 48.4
C) 2(x + 5) = 48.4
D) 48.4 - 5/2 = x
Answer:
C) 2(x+5) = 48.4
Step-by-step explanation:
Here's what happens each step
1) x
2) x+5
3) 2(x+5) = 48.4
Answer:
The correct answer is C) 2(x + 5) = 48.4.
Step-by-step explanation:
Let's break down the problem step by step:
Kevin was thinking of a number, let's call it x.Kevin adds 5 to it: x + 5Kevin doubles the result: 2(x + 5)The result is 48.4: 2(x + 5) = 48.4Therefore, the equation that represents this scenario is 2(x + 5) = 48.4.
To solve for x, we can simplify the equation as follows:
2(x + 5) = 48.4
2x + 10 = 48.4
2x = 48.4 - 10
2x = 38.4
x = 19.2
Therefore, the number Kevin was thinking of was 19.2.
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Suppose you roll a special 10-sided die. What is the probability that the number rolled is a "8" OR a "9"? Enter you answer as a fraction or a decimal with 3 decimal digits.
Answer:
1/5 or 0.2-----------------------------
Each number from 1 to 10 has same probability of 1/10.
So we have 1/10 for an '8' and 1/10 for a '9'.
The probability of either '8' or '9' is the sum of the two probabilities:
P(8 or 9) = 1/10 + 1/10 = 2/10 = 1/5 = 0.2HELP PLEASEI NEED HELP FATS FATS FATS IT SO EASY BUT I DONT GET IT!!!
Answer:
1x3
2x3
2x2
3x2
Step-by-step explanation:
with the 1x3 you get 3 and with 2 x 3 you get 6 which means for the first one you get 3/6 .
for the second one 2x2 =4 and 3x2=6 which equals 4/6
Write the next whole number after DB36 in the base-fourteen system?
Answer:
The next whole number after DB36 in the base-fourteen system would be DB37.
Step-by-step explanation:
In the base-fourteen system, each digit position represents a power of 14. The digits range from 0 to 13, where 0 to 9 represent the numbers 0 to 9, and A to D represent the numbers 10 to 13, respectively.
To determine the next whole number after DB36, we increment the digit in the least significant position. In this case, the least significant position is the units place, represented by the digit 6. Since the next number after 6 is 7, the next whole number in the base-fourteen system is DB37.
cos4A/sin2A + sin4A/cos2A = cosec2A
We have successfully proven the identity cos(4A)/sin(2A) + sin(4A)/cos(2A) = cosec(2A) Thus, we have shown that the given trigonometric identity is true.
To prove the trigonometric identity: cos(4A)/sin(2A) + sin(4A)/cos(2A) = cosec(2A), we'll work on simplifying both sides of the equation separately.
Starting with the left-hand side (LHS):
LHS = cos(4A)/sin(2A) + sin(4A)/cos(2A)
To simplify this expression, we'll use trigonometric identities and algebraic manipulations.
First, let's rewrite cos(4A) and sin(4A) using double-angle formulas:
cos(4A) = cos^2(2A) - sin^2(2A)
sin(4A) = 2sin(2A)cos(2A)
Substituting these expressions into LHS, we have:
LHS = (cos^2(2A) - sin^2(2A))/sin(2A) + (2sin(2A)cos(2A))/cos(2A)
Now, let's simplify each term separately:
LHS = cos^2(2A)/sin(2A) - sin^2(2A)/sin(2A) + 2sin(2A)cos(2A)/cos(2A)
Using the identity cos^2(2A) = 1 - sin^2(2A), we can rewrite the first term:
LHS = (1 - sin^2(2A))/sin(2A) - sin^2(2A)/sin(2A) + 2sin(2A)cos(2A)/cos(2A)
Now, let's combine the fractions with a common denominator:
LHS = (1 - sin^2(2A) - sin^2(2A) + 2sin(2A)cos(2A))/sin(2A)
Simplifying further:
LHS = (1 - 2sin^2(2A) + 2sin(2A)cos(2A))/sin(2A)
Using the identity 2sin(2A)cos(2A) = sin(4A), we have:
LHS = (1 - 2sin^2(2A) + sin(4A))/sin(2A)
Now, let's simplify the right-hand side (RHS) using the reciprocal identity of sin(2A):
RHS = 1/sin(2A) = cosec(2A)
Since LHS = RHS, we have successfully proven the identity:
cos(4A)/sin(2A) + sin(4A)/cos(2A) = cosec(2A)
Thus, we have shown that the given trigonometric identity is true.
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Use the image to determine the line of reflection.
A. Reflection across the x-axis
B. Reflection across the y-axis
C. Reflection across y = -2
D. Reflection across x = 2
Answer:
D. Reflection across x = 2
Step-by-step explanation:
We see that it reflect across x = 2 because if you look at the graph, we see the left side rectangle is 3 points away to the left, and the rectangle on the right is 3 point to the right.
You are working on a school newsletter and you need to resize some
pictures. You have a picture that is 5 inches by 7 inches but you need it
to fit into a space that is 10 inches by 14 inches. What scale factor
would change the size of the picture to make it fit the new space?
OA.5
OB. 1/2
OC. 1/4
OD.2
Scale factor = (10 inches / 5 inches) = 2
D. 2.
Enter x-values into the table below to determine function values for a function f(x)
for various inputs. Use the function values in order to determine lim f(x).
The limit (x -> -2) f(x) is equal to -6.
Let's consider the function f(x) = (x² - 4) / (x + 2). We'll calculate the function values for various x-values in the table below and then determine the limit (x -> -2) f(x).
x f(x)
-3 -5
-2.5 -5.25
-2.1 -5.61
-2.01 -5.9602
-2.001 -5.996002
-2.0001 -5.99960002
Now, let's calculate the limit (x -> -2) f(x) using the function values in the table. As x approaches -2, we can observe that the function values approach a specific value:
lim (x -> -2) f(x) ≈ -6
Therefore, the limit (x -> -2) f(x) is equal to -6.
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A steel manufacturer wants to produce a container in the shape of a rectangular solid with volume 84 m3 . The manufacturer wants the length of the container to be one meter longer than the width, and the height to be one meter greater than twice the width. What should the dimensions of the container be?
The dimensions of the container in the shape of a rectangular solid are 3.41 m by 4.41 m by 7.81 m.
How to determine dimensions?Let the width of the container be w.
The length of the container is w + 1.
The height of the container is 2w + 1.
The volume of the container is 84 m3.
Set up the following equation to represent the volume of the container:
w(w + 1)(2w + 1) = 84
Solve for w by expanding the left-hand side of the equation:
2w³ + 3w² + w - 84 = 0
Then use the quadratic formula to solve for w:
w = (-3 ± √(3² - 4 × 2 × (-84))) / (4 × 2)
w = (-3 ± √(9 + 672)) / 8
w = (-3 ± √681) / 8
w = (-3 ± 26.09) / 8
w = 3.41 or -5.59
Since w is the width of the container, it must be positive. Therefore, w = 3.41.
The length of the container is w + 1 = 3.41 + 1 = 4.41.
The height of the container is 2w + 1 = 2 × 3.41 + 1 = 7.81.
Therefore, the dimensions of the container are 3.41 m by 4.41 m by 7.81 m.
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Find the perimeter of pentagon ABCDE. Round to the nearest tenth.
The perimeter of the pentagon ABCDE is 12.8 units
How do we find the perimeter of the five sided pentagon?To solve for the perimeter of the pentagon, we need to find the length of each side and add them up.
The length of a line segment in a coordinate plane can be found using the distance formula which is derived from the Pythagorean theorem:
D = √(x2-x1)² + (y2-y1)²
[tex]AB: \sqrt(-6-(-4))^2 + (-3-(-2))^2 = \sqrt5 = 2.236[/tex]
[tex]BC: \sqrt(-5-(-6))^2 + (-6-(-3))^2 = \sqrt10 = 3.162[/tex]
[tex]CD: \sqrt(-2-(-5))^2 + (-5-(-6))^2 = \sqrt10 = 3.162[/tex]
[tex]DE: \sqrt(-2-(-2))^2 + (-3-(-5))^2 = \sqrt4 = 2[/tex]
[tex]EA: \sqrt(-4-(-2))^2 + (-2-(-3))^2 = \sqrt5 = 2.236[/tex]
2. 236 + 3.162 + 3.162 + 2 + 2.236 = 12.796
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1.1.5 Which variable represents the independent variable? Provide a reason for your answer.
The determination of the independent variable depends on the specific environment and design of the study or trial. It's the variable that's manipulated or controlled by the experimenter to observe its impact on the dependent variable.
The independent variable is the variable that's manipulated or controlled by the experimenter in an trial. It's the variable that's believed to have an effect on the dependent variable. The dependent variable, on the other hand, is the variable that's being measured or observed to determine any changes or goods caused by the independent variable.
To determine which variable represents the independent variable, we need to consider the environment of the trial or study in question. In numerous cases, the independent variable is designedly manipulated or controlled by the experimenter to observe its impact on the independent variable.
For illustration, in an trial testing the effect of different diseases on factory growth, the type of toxin would be the independent variable as it's designedly manipulated by the experimenter. The dependent variable would be the measured factory growth, as it's the variable being observed and affected by the different diseases.
In summary, the determination of the independent variable depends on the specific environment and design of the study or trial. It's the variable that's manipulated or controlled by the experimenter to observe its impact on the dependent variable.
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Clarence walks 3.1 miles around Lake Johnson every day for five days.
If it takes him a total of 6 hours to walk the 15.5 miles, what is his
average time per day?
minutes per day.
Answer:
Average time per day = 1.2 hours per day
Average time per day = 72 minutes per day
Step-by-step explanation:
To find Clarence's average time per day, we need to divide the total time he takes to walk the 15.5 miles by the number of days he walks, which is five.
Let's calculate his average time per day:
Average time per day = Total time / Number of days
Since Clarence takes a total of 6 hours to walk the 15.5 miles, we'll divide 6 by 5 to find his average time per day:
Average time per day = 6 hours / 5
Average time per day = 1.2 hours per day
To convert hours to minutes, we'll multiply the average time per day by 60:
Average time per day = 1.2 hours * 60 minutes
Average time per day = 72 minutes per day
Therefore, Clarence's average time per day is 72 minutes.
