Answers
Step-by-step explanation:
option D is correct answer
Answer:
C
Step-by-step explanation:
[tex]\text{Plug} ~(x,y) = ( 2,0)~ \text{in both equations.}\\\\3*0 = 2-2\implies 0=0\\\\0 = -2(2) +4 \implies 0=0\\\\\text{Hence x =2 and y =0.}[/tex]
Related Questions
Review the steps of the proof of the identity
At which step was an error made?
sin (A-3) - COSA.
= A.
step 1
step 2
3п
sin
step 3
step 4
Step 1: = sinAcos
3 п
2
-
COSAsin
n ()
Step 2: = (sinA)(0) + COSA( - 1)
Step 3: = (sinA)(0) + (1) (COSA)
Step 4: = 0 + COSA
Step 5: Cos A
Answers
Answer:
step 2
and then also in step 3 compensating the error in step 2
Step-by-step explanation:
I think I just answered this for another post.
sin(a - b) = sin(a)cos(b) - cos(a)sin(b)
so, step 1 is correct :
sin(A - 3pi/2) = sin(A)cos(3pi/2) - cos(A)sin(3pi/2)
but step 2 suddenly and incorrectly switched that central "-" to a "+".
yes, sin(3pi/2) = -1, but that is still an explicit factor in step 2. so it was not used to flip the central operation from subtraction to addition, and therefore this change was a mistake.
then, in step 3, another error was made by just ignoring the "-" sign of "-1" and still keeping the central "+" operation. this error compensated for the error in step 2 bringing us back by pure chance to the right result.
Select the fraction that is equivalent to one fifth. (2 points)
a
1/10
b
2/1
c
2/5
d
3/5
Answers
Answer:
none
Step-by-step explanation:
[tex]one \: fifth = \frac{1}{5} \\ from \: the \: options \: no \: fraction \: is \: equivalent \: to \: one \: fifth \: and \: non \: of \: the \: fracrions \: can \: be \: reduced \: to \: give \: one \: fifth \\ so \: the \: answer \: is \: none[/tex]
You purchased a new car for $32,000. The value
of the car decreases by 12% each year. Which
function could be used to model the value of the
car V after years?
a. V(t)=32,000(1+0.12)'
b. V()=32,000(1 -0.12)'
c. V(t)=32,000(0.12)'
d. V(t)=32,000 - 0.12r
Answers
The function that could be used to model the value of the car V after years is V(t) = 32000(1 - 0.12)^t
How to determine the function?The given parameters are:
Initial value, a = 32000
Rate, r = 12% --- depreciation rate
Since the value of the function decreases with time, the equation of the exponential function would be:
V(t) = a(1 - r)^t
So, we have:
V(t) = 32000(1 - 12%)^t
Express as decimal
V(t) = 32000(1 - 0.12)^t
Hence, the function that could be used to model the value of the car V after years is V(t) = 32000(1 - 0.12)^t
Read more about exponential functions at:
https://brainly.com/question/11464095
#SPJ1
Hurry and answer this please. Find the volume of the sphere use 3.14 for pi
Answers
Answer:
44.6cm³
Step-by-step explanation:
V=3/4×3.14×2.2³=44.6cm³
Answer:
Option 2) 44.6 cm³ os the correct answer.
Step-by-step explanation:
SOLUTION :
Here we have given that the radius of the sphere is 2.2 cm. We have to find the volume of sphere.
Finding the volume of sphere by substituting all the given values in the formula :
[tex]\quad{\longrightarrow{\sf{V_{(Sphere)} = \dfrac{4}{3}\pi{r}^{3}}}}[/tex]
V = volume π = 3.14 r = radius[tex]\quad{\longrightarrow{\sf{V_{(Sphere)} = \dfrac{4}{3}\pi{r}^{3}}}}[/tex]
[tex]\quad{\longrightarrow{\sf{V_{(Sphere)} = \dfrac{4}{3} \times 3.14 \times {(2.2)}^{3}}}}[/tex]
[tex]\quad{\longrightarrow{\sf{V_{(Sphere)} = \dfrac{4}{3} \times 3.14 \times 10.65}}}[/tex]
[tex]\quad{\longrightarrow{\sf{V_{(Sphere)} = \dfrac{4}{\cancel{3}} \times 3.14 \times \cancel{10.65}}}}[/tex]
[tex]\quad{\longrightarrow{\sf{V_{(Sphere)} = 4 \times 3.14 \times 3.55}}}[/tex]
[tex]\quad{\longrightarrow{\sf{V_{(Sphere)} = 12.56 \times 3.55}}}[/tex]
[tex]\quad{\longrightarrow{\sf{V_{(Sphere)} = 44.58 \: {cm}^{3}}}}[/tex]
[tex]\quad{\longrightarrow{\sf{\underline{\underline{\pink{V_{(Sphere)} \approx 44.6 \: {cm}^{3}}}}}}}[/tex]
Hence, the volume of sphere is 44.6 cm³.
————————————————Find the inverse of the function
Answers
Hope this helps!! :)
Which type of function is shown in the table
below?
Answers
Answer:
Not a function
Step-by-step explanation:
Since 2 different points have the same x-coordinte, the relation is not a function.
Are these ratios equivalent?
12 cards to 72 animals, 11 marbles to 66 marbles
Answers
72/12 = 6
66/11 = 6
6 = 6
What is the area, in square centimeters, of the trapezoid below?
8.5 cm
7.5 cm
15.7 cm
Answers
Answer:
90.75 cm^2
Step-by-step explanation:
The area of a trapezoid is given by
A = 1/2 ( b1+b2) *h
where b1 and b2 are the lengths of the bases and h is the height
A = 1/2(8.5+ 15.7) * 7.5
1/2 (24.2) 7.5
90.75 cm^2
Which expressions represent the volume of the composite figure (the shaded figure)? check all that apply. (7)(12)(10) – π(32)(10) one-third(7)(12)(10) – one-thirdπ(32)(10) one-third(7)(12)(10) one-thirdπ(32)(10) 280 – 30π 280 30π 840 – 90π
Answers
Answer:
esf
Step-by-step explanation:
Answer: b and d
Step-by-step explanation: right on edge
a cylinder has a diameter or 4 ft and height of 7 ft use 3.14 for pi
Answers
Answer:
87.92ft^3
Step-by-step explanation:
Formula:
V= π*r^2 *h
V=π*2^2*7V=π*4*7V=12.56 *7V=87.92ft^3A cylinder, cone, and sphere are show below. The three figures have the same radius. If the radius is 3, what is each volume?
Answers
Answer:
cylinder = 27π
cone = 9π
sphere = 36π
Step-by-step explanation:
volume of a cylinder = πr²h where r = radius and h = height
height of cylinder (h) = 3 and radius (r) = 3
so volume = π(3)²3
==> simplify exponent
volume = π9(3)
==> multiply 9 and 3
volume of cylinder = 27π
Volume of a cone = πr²(h/3) where r = radius and h = height
height of cone (h) = 3 and radius (r) = 3
so volume = π(3)²(3/3)
==> simplify exponent
volume = π9(3/3)
==> divide 3 by 3
volume = π9(1)
==> multiply 9 and 1
volume of cone = 9π
volume of a sphere = 4/3πr³ where r = radius
radius = 3
so volume = 4/3π(3)³
==> simplify exponent
volume = 4/3π27
==> multiply 4/3 and 27
volume of sphere = 36π
HELP ASPA PLEASE I will give brainliest
A state uses a combination of three letters (A – Z) followed by three digits (0 – 9) for
their standard vehicle license plates. How many different standard license plates are
possible using a combination of three letters followed by three digits.
Answers
Answer:
2340
Step-by-step explanation:
fundamental counting principle
Solve the following equation for
G:2 (g-h) = b+4
Answers
If the equation 2(g - h) = b + 4 is solved for g. Then the value of g will be b/2 + h + 2.
What is the solution of the equation?A combination of equations solution is a collection of values x, y, z, etc. that enable all of the calculations to true at the same time.
The equation is given below.
2(g - h) = b + 4
Then solve the equation for the value of g. Then we have
2(g - h) = b + 4
g - h = b/2 + 2
g = h + b/2 + 2
More about the solution of the equation link is given below.
https://brainly.com/question/545403
#SPJ1
A radioactive compound with mass 470 grams decays at a rate of 3% per hour. Which
equation represents how many grams of the compound will remain after 6 hours?
Submit Answer
O C = 470(0.03)
O C = 470(0.7)
O C = 470(1 + 0.03)
C = 470(1 – 0.03)
Answers
After 6 hours the radioactive compound with mass 470 grams becomes 391.49 grams and the equation will be C is equal to 470(1-0.03)^6.
What is exponential decay?During exponential decay, a quantity falls slowly at first before rapidly decreasing. The exponential decay formula is used to calculate population decline and can also be used to calculate half-life.
We know the decay can be as:
[tex]\rm C = a(1-r)^t[/tex]
We have:
a = 470 grams
r = 3% = 0.03
t = 6 hours
[tex]\rm C = 470(1-0.03)^6[/tex]
C = 391.49 grams
Thus, after 6 hours the radioactive compound with mass 470 grams becomes 391.49 grams and the equation will be C is equal to 470(1-0.03)^6.
Learn more about the exponential decay here:
brainly.com/question/14355665
#SPJ1
Which of the following is equal to the rational expression below when x≠2 or
9?
4(x-2)
(x-2)(x-9)
Answers
The expression equivalent to the given expression is [tex]\frac{4}{x-9}[/tex]
Rational expressionsThis are expressions written as a ratio of two expressions. Given the rational expression
[tex]f(x) = \frac{4(x-2)}{(x-2)(x-9)}[/tex]
Since (x-2) is common in both numerator and denominator, they wil cancel out to have the function below;
[tex]f(x) = \frac{4(x-2)}{(x-2)(x-9)}=\frac{4}{x-9}[/tex]
Hence the expression equivalent to the given expression is [tex]\frac{4}{x-9}[/tex]
Learn more on rational function here: https://brainly.com/question/1851758
#SPJ1
Find the value of x
Answers
This is how to get that answer: the formula for the intersecting secant and tangent outside the circle is a^2 = b(b+c) If you use the numbers in the pic you will get x^2 = 9(9+7) so the number after the equal sign will be 144, so x^2 = 144. To undo the square youre gonna use the square root on both sides, so you have X = 12.
Express 160° in radian measure
Answers
You know that 3 pencils and 7 pens cost $24 with 3 pencils and 3 pens cost $12 how many dollars are 4 pencils and 5 pens worth?
Answers
the ratio of boys:girls in a class is 4:5
A: what is the fraction of boys in the class
B: what is the fraction of girls in the class
Answers
Answer:
Answer: 4/9 of the class are boys and 5/9 of the class are girls.
Step-by-step explanation:
There are 9 nine students in total in the class since 4 + 5 = 9.
Input the amount of boys and girls there are in the class in the numerator and have 9 as the denominator. 4/9 of the class are boys and 5/9 of the class are girls.
--~Hope this helped~--
simplify the expression
4(5+ -3x) +10
Answers
Answer:
30 - 12x or 6(5 - 2x)
Step-by-step explanation:
Given expression:
4[5 + (-3x)] + 10First, let us simplify the expression inside the parentheses;
⇒ 4[5 + (-3x)] + 10⇒ 4[5 - 3x] + 10Then, let us open the parentheses by simplifying the distributive property;
⇒ 4[5 - 3x] + 10⇒ 20 - 12x + 10Finally, let us simplify the expression by adding 10 to 20.
⇒ 20 - 12x + 10⇒ 30 - 12x[Optional] Factor the expression by putting the expression in parentheses.
⇒ 30 - 12x⇒ (30 - 12x)Since 6 is divisible to all the terms in the expression, we can divide 6 to all the terms in the expression and take "6" outside the parentheses.
⇒ 6(30/6 - 12x/6)⇒ 6(5 - 2x)Therefore, the simplified expression is 30 - 12x or 6(5 - 2x).
Suppose a rocket is launched from a platform. The function h(t) - 4.96 + 200€ + 25gives the rocket's
height, h, in meters, in terms of time, t, in seconds. The function h(t) is equivalent to -4.9(t- 20. 41) + 2,065.82
Answers
Answer:
See below
Step-by-step explanation:
Opens Downward ( due to the - coefficient of t^2 )
when t = 0 the height is = 25 meters
initial velocity = 200 m/s
Vertex = 20.41, 2065.82
Can someone check this screen shot out and help me pls?
Answers
Answer:
A
Step-by-step explanation:
positive, the longer she run, the longer she jump
Positive the further u run the farther u jump
Find the length of the arc of the circle.
Answers
Answer:
25.12 in
Step-by-step explanation:
In the given circle
radius (r) = 12 incentral angle [tex](\theta) = 120\degree[/tex]Formula for length of arc is given as: [tex] l=\frac{\theta}{360\degree}\times 2\pi r[/tex]Plugging the values of r and [tex]\theta[/tex] in the above equation, we find:[tex] l=\frac{120\degree}{360\degree}\times 2(3.14) (12)[/tex][tex]\implies l=\frac{1}{3}\times 2(3.14) (12)[/tex][tex]\implies\huge\red{ l=25.12\:in}[/tex]16. Hamster Heaven charges an annual fee of $20 plus $2.50 for each day of hamster
activities you attend. Hamster Fun World charges an annual fee of $35 plus $1 for each day
of hamster activities you attend. Write and solve a linear system using a method of your
choosing and explain which company you would use for your hamster and why. A graph is
included below if you would like to graph it. Make sure you identify your variables, check
your solution and write a sentence.
Answers
Answer:
hamster heaven
y=20+2.5x
hamster fun world
y=35+x
Step-by-step explanation:
by solving we get
x=10
y=45
by comparing the graph hamster fun world 8s cheaper on the long run
Mark Me Brainliest
1. Suppose a circle is divided into congruent slices. Match each number of slices with
the resulting central angle measure of each slice.
A. 2.
1.45°
B.3
2. 60°
C.4
3. 72°
D.5
4. 120°
E. 6
5. 90°
F.8
6. 180°
Answers
Answer:
Step-by-step explanation:
congruent slices means all slices with same shape and angle
a circle has 360 (angle)
For 2, 180
For 3, 120
For 4, 90
For 5, 72
For 6, 60
For 8, 45
34) Find the inverse of y = 5x
Answers
Isolate y, so divide both sides by 5
x/5=y
Or
f(x)^-1=x/5
can someone tell me how do I solve this. how is the result 2.40
we still have not learned log in school
Answers
Step-by-step explanation:
Properties used
logₐ a = 1log aᵇ = b log alog ab = log a + log bSee the steps below
- log (4*10⁻³) = - (log 4 + log 10⁻³) = (log 4 ≈ 0.6 rounded)- (0.6 - 3*log 10) = - (0.6 - 3*1) = - (0.6 - 3) = - (- 2.4) = 2.4PLEASE PLEASE HELP QUICKLY
Complete the ratio table to convert the units of time from hours to weeks or weeks to hours.
Hours
Weeks
168
1
1,008
5
Answers
The correct answers are 1008 hours are 6 weeks and 5 weeks are 840 hours.
What is the ratio?The ratio indicates how many times one number is to the other number.For example, if you have 4 chocolates and 2 cakes the ratio of the chocolates and the cake will be 2:1 which means that chocolate is 2 times then the cake.
It is given that 168 hours is equal to 1 week. we need to find 1008 hours has how many weeks and 5 weeks has how many hours.
1.) 1008 hours has how many weeks
168 hours = 1 week
1 hour = 1 / 168 weeks
1008 hours = 1008 / 168 = 6 weeks
So 1008 hours has 6 weeks
2.) 5 weeks has how many hours.
1 week = 168 hours
5 weeks = 5 x 168 hours
5 weeks = 840 hours
So 5 weeks will have 840 hours.
Therefore correct answers are 1008 hours are 6 weeks and 5 weeks are 840 hours.
To know more about ratios follow
https://brainly.com/question/2328454
#SPJ1
Answer:
hours weeks
168 1
1008 6
840 5
Step-by-step explanation:
Erin wants to invest $3,600.00 in a savings account that pays 4.42% simple interest. How long will it take for this investment to reach a value of $6,700.00?
Round your answer to the nearest tenth of a year.
It will take
years for the investment to reach a value of $6,700.00.
Answers
[tex]~~~~~~ \textit{Simple Interest Earned Amount} \\\\ A=P(1+rt)\qquad \begin{cases} A=\textit{accumulated amount}\dotfill & \$6700\\ P=\textit{original amount deposited}\dotfill & \$3600\\ r=rate\to 4.42\%\to \frac{4.42}{100}\dotfill &0.0442\\ t=years \end{cases} \\\\\\ 6700=3600[1+(0.0442)(t)]\implies \cfrac{6700}{3600}=1+0.0442t\implies \cfrac{67}{36}=1+0.0442t \\\\\\ \cfrac{67}{36}-1=0.0442t\implies \cfrac{31}{36}=0.0442t\implies \cfrac{\frac{31}{36}}{0.0442}=t\implies 19.5\approx t[/tex]
Gloria says the two expressions;
1/3 (9x + 48) - 12x and -4(2x +4) are ecuivalent. Is she correct?
Explain how you know.
Answers
Answer:
She is incorrect
Step-by-step explanation:
[tex]\begin{aligned}\dfrac{1}{3}(9x+48)-12x & =\dfrac{9}{3}x+\dfrac{48}{3}-12x\\ & = 3x+16-12x\\& = 16-9x\end{aligned}[/tex]
[tex]\begin{aligned}-4(2x+4) & =(-4)2x+(-4)4\\& = -8x-16\end{aligned}[/tex]
As [tex]16-9x\neq -8x-16[/tex] then she is incorrect.
She is incorrect
