Answer:
145.2 + .3 = 145.5
145.2 - .3 = 144.9
C. 144.9 <= x <= 145.5
Step-by-step explanation:
ASAP! GIVING BRAINLIEST! Please read the question THEN answer CORRECTLY! NO guessing. I say no guessing because people usually guess on my questions.
Answer:
p(x)=19x+15
Step-by-step explanation:
Distribution property
Take the values of r and x- you should end up with p(x)=(25x-6x+15)(x)
- 25x minus 6x equals 19x
- form there you distribute the (x) and it will square 19x and multiply with 15
- end answer should be p(x)=19x²+15x
- simply by factoring the ² and 15x and you should get 19x+15
comment if you need clearer step by stepAnswer:
A. p(x) = 19x - 15
Step-by-step explanation:
→Set it up, like so:
[tex](25x)-(6x+15)[/tex]
[tex]25x - 6x-15[/tex]
→Add like terms (25x and -6x):
[tex]19x - 15[/tex]
Bugs Bunny was
42
4242 meters below ground, digging his way toward Albuquerque, when he realized he wanted to be above ground. He turned and dug through the dirt diagonally for
100
100100 meters until he was above ground.
What is the angle of elevation, in degrees, of Bugs Bunny's climb?
Answer:
24.83 degrees.
Step-by-step explanation:
In the diagram, Bugs Bunny was initially at point A 42 meters below ground and dug diagonally 100 meters to point B.
We are to determine the angle of elevation, [tex]\angle BAX[/tex] of his climb.
Now, [tex]\angle BAX=\angle ABC$ (Alternate Angles)[/tex]
Using Trigonometric ratios
[tex]\sin B=\dfrac{AC}{AB} \\\sin B= \dfrac{42}{100}\\\\B=\arcsin \dfrac{42}{100}\\\\B=24.83^\circ[/tex]
The angle of elevation of Bugs Bunny's climb is 24.83 degrees. (correct to 2 decimal places).
Evaluate the function at the given values of the independent variable. Simplify the results.
[tex]answers \\ a. \: \: 0 \\ b. \: \: \frac{ - 63}{8} \\ c. \: \: {c}^{3} - {5c}^{2} \\ d. \: \: {t}^{3} + 25t + {10t}^{2} \\ please \: see \: the \: attached \: picture \\ for \: full \: solution \\ hope \: it \: helps \\ good \: luck \: on \: your \: assignment[/tex]
You are painting a door with a diamond shape shaped window as shown you have to put a tape around the edge of the window to keep the paint off find the length of tape you need to to the nearest inch
Answer:
104 inches
Step-by-step explanation:
No window dimensions are given. We might assume that the shape of the window can be defined by these coordinates:
(18,64), (28,40), (18,16), (8,40)
A graph of the points reveals the window to be a rhombus, so we can figure the length of one side to determine the lengths of all sides.
On edge of the window will have a length determined by the distance formula:
d = √((x2 -x1)^2 +(y2 -y1)^2)
For (x1, y1) and (x2, y2) as (8, 40) and (18, 64), the edge length is ...
d = √((18 -8)^2 +(64 -40)^2) = √(10^2 +24^2) = √676
d = 26 . . . . . the length of one of the four edges
The total length of the four window edges is ...
4 × 26 = 104
104 inches of tape are needed.
What is the volume of a hemisphere with a radius of 4.8 ft, rounded to the nearest
tenth of a cubic foot?
Answer: 231.6
Step-by-step explanation:
Answer:
231.6 ft³
Step-by-step explanation:
volume of sphere:
V=[tex]\frac{4}{3} \pi r^{3}[/tex]
radius=4.8
plug in:
[tex]\frac{4}{3} \pi (4.8)^{3}[/tex]
463.246686328
Volume of Hemisphere HALF of Volume of Sphere:
[tex]\frac{463.246686328}{2}[/tex] =231.623343164
≈231.6 ft³
A 80 kg patient needs a medication x in the amount of 0.25 mg/kg/day. The medication comes in a liquid solution of 50 mg for every 10mg. How many ml of this solution will this patient need in a day
Answer:
v = 100ml
Step-by-step explanation:
0,25mg/kg
-----------> 0,25 * 80 = 20mg
50ml for every 10mg
'v"ml for 20mg
10 * v = 50 * 20
v = 100ml
HELPP!!!
For the equation 3(x - 4) = [blank] - 2x +7
Fill in the blank with a value that will create an equation with no solutions.
Answer:
The value that will create an equation with no solutions is 5x.
Step-by-step explanation:
No solution would mean that there is no answer to the equation. It is impossible for the equation to be true no matter what value we assign to the variable.
To create a no solution equation, we can need to create a mathematical statement that is always false. To do this, we need the variables on both sides of the equation to cancel each other out and have the remaining values to not be equal.
Use distributive property on the left side first.
[tex]3(x - 4) = [blank] - 2x +7\\\\3x-12=5x - 2x +7\\\\3x-12=3x+7\\\\3x-12+12=3x+7+12\\\\3x=3x+19\\\\3x-3x=3x+19-3x\\\\0=19[/tex]
Notice that we combined like terms first and then eliminated the variable from one side. When that happened, the variable on the other side was eliminated as well, giving us a false result.
Since zero does not equal nineteen, we know we have an equation with no solution.
An automobile manufacturer would like to know what proportion of its customers are not satisfied with the service provided by the local dealer. The customer relations department will survey a random sample of customers and compute a 99.5% confidence interval for the proportion who are not satisfied.
(a) Past studies suggest that this proportion will be about 0.2. Find the sample size needed if the margin of the error of the confidence interval is to be about 0.015. (You will need a critical value accurate to at least 4 decimal places.)(b) Using the sample size above, when the sample is actually contacted, 12% of the sample say they are not satisfied. What is the margin of the error of the confidence interval?
Answer:
a) A sample size of 5615 is needed.
b) 0.012
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
The margin of error is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
99.5% confidence level
So [tex]\alpha = 0.005[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.005}{2} = 0.9975[/tex], so [tex]Z = 2.81[/tex].
(a) Past studies suggest that this proportion will be about 0.2. Find the sample size needed if the margin of the error of the confidence interval is to be about 0.015.
This is n for which M = 0.015.
We have that [tex]\pi = 0.2[/tex]
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
[tex]0.015 = 2.81\sqrt{\frac{0.2*0.8}{n}}[/tex]
[tex]0.015\sqrt{n} = 2.81\sqrt{0.2*0.8}[/tex]
[tex]\sqrt{n} = \frac{2.81\sqrt{0.2*0.8}}{0.015}[/tex]
[tex](\sqrt{n})^{2} = (\frac{2.81\sqrt{0.2*0.8}}{0.015})^{2}[/tex]
[tex]n = 5615[/tex]
A sample size of 5615 is needed.
(b) Using the sample size above, when the sample is actually contacted, 12% of the sample say they are not satisfied. What is the margin of the error of the confidence interval?
Now [tex]\pi = 0.12, n = 5615[/tex].
We have to find M.
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
[tex]M = 2.81\sqrt{\frac{0.12*0.88}{5615}}[/tex]
[tex]M = 0.012[/tex]
Suppose the coefficient matrix of a system of linear equations has a pivot position in every row. Explain why the system is consistent. Choose the correct answer below. A. The system is consistent because the rightmost column of the augmented matrix is not a pivot column. B. The system is consistent because all the columns in the augmented matrix will have a pivot position. C. The system is consistent because the augmented matrix is row equivalent to one and only one reduced echelon matrix. D. The system is consistent because the augmented matrix will cont
Answer: A.
The system is consistent because the rightmost column of the augmented matrix is not a pivot column.
Explanation: a system is consistent if and only if the rightmost column of the augmented matrix is not a pivot column. Since every column of the coefficient matrix is a pivot column, none of the leading coefficients are in the rightmost column of the augmented matrix. Therefore the rightmost column of the augmented matrix cannot be a pivot column and the system must be consistent.
The duration of telephone calls directed by a local telephone company: σ = 3.6 minutes, n = 560, 90% confidence. Round your answer to the nearest thousandth
Answer:
The margin of error for the confidence interval is of 0.25 minutes.
Step-by-step explanation:
With what we are given, the only thing that this question can be asked is the margin of error for the confidence interval of the mean duration of telephone calls directed by a local telephone company.
We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:
[tex]\alpha = \frac{1-0.9}{2} = 0.05[/tex]
Now, we have to find z in the Ztable as such z has a pvalue of [tex]1-\alpha[/tex].
So it is z with a pvalue of [tex]1-0.05 = 0.95[/tex], so [tex]z = 1.645[/tex]
Now, find the margin of error M as such
[tex]M = z*\frac{\sigma}{\sqrt{n}}[/tex]
In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.
Using what we are given:
[tex]M = z*\frac{\sigma}{\sqrt{n}}[/tex]
[tex]M = 1.645*\frac{3.6}{\sqrt{560}}[/tex]
[tex]M = 0.25[/tex]
The margin of error for the confidence interval is of 0.25 minutes.
indictate which of the following are propositions.For the ones which are propositions, determine the truth value.(a) The integer 24 is prime.(b) Is the integer 315 even?(c) The sum of 3 and 4 is 12.(d)
Answer:
Step-by-step explanation:
When we propose an hypothesis, it is either true or false. The same goes for a proposition.
The required objective here is to determine the truth value in the following proposition.
(a) The integer 24 is prime.
(b) Is the integer 315 even?
(c) The sum of 3 and 4 is 12.
(d) -4 ∈ Ζ
From the first option:
(a) The integer 24 is prime.
The sentence is a proposition but the truth value is FALSE because a prime number is a number that can only be divide by 1 and itself but in the case of 24, Its factors include 1,2,3,4,6,8,12 and 24 which make 24 to falsify the proposition of being a prime number.
(b) Is the integer 315 even?
This option is not a proposition but rather a question since it has a question mark, however, 315 is an odd number since it is not divisible by 2.
( c) The sum of 3 and 4 is 12.
This is a proposition and the truth value is FALSE
The sum of 3+4 = 7 ; Hence; 7 ≠ 12
(d) -4 ∈ Ζ
This is a proposition and the truth value is TRUE.
-4 ∈ Ζ is read as ( minus four is an integer (∈) of Z )
Yes, this is a proposition and its Truth value is TRUE , since minus four is an integer (∈) of Z
(3 1/2 - 9 3/4) ÷ (-2.5)
exact form
5/2
decimal form
2.5
mixed number form
2 1/2
Which expressions are equivalent to 30 - 3y - 9
3(17-y)
3(20-y-3)
17(3-y)
Or 20(3-3y)-9
Answer:
B 3(20-y-3)
Step-by-step explanation:
This is the answer u lookin for ✌
H is directly proportional to the square root of p h=5.4 when p=1.44 find h when p=2.89
Answer:
h=7.65
Step-by-step explanation:
h=k√p
k=h/√p
k=5.4/√1.44
k=4.5
h=4.5√p
when p=2.89
h=4.5√2.89
h=7.65
Answer:
H = 7.65
I hope it helps
[tex]h \: = \sqrt{p} \\ h \: = k \sqrt{p} .....(1) \\ when \: h \: = 5.4 \: p = 1.44 \\ 5.4 = k \: \sqrt{1.44} [/tex]
[tex]5.4 = 1.2k \\ divide \: both \: sides \: by \: 1.2 \\ k \: = 4.5[/tex]
[tex]h \: = 4.5 \sqrt{p} = \: formula \: connecting \: h \: and \: p \\ from \: equation \: .....(1) \\ when \: p \: = 2.89 \: h = \\ when \: p \: = 2.89 \: h \: = \\ h \: = 4.5 \sqrt{2.89} \\ h = [/tex]
[tex]h \: = 4.5 \sqrt{2.89} \\ h = 4.5 \times 1.7 \\ h \: = 7.65[/tex]
Scores of students: 30 35 40 45 50 6
No of students: 8 12 15 6 5 4.
find the median scores
and the modal score
Answer:
Scores of students:
Mean: 34.3
Mode: no mode
No. of students:
Mean: 8.3
Mode: no mode
Step-by-step explanation:
(for scores of students)
6, 30, 35, 40, 45, 50
Mean: 6 + 30 + 35 + 40 + 45 + 50 = 206/6 = 34.3
Mode: there are no mode in the set of data.
(for No. of students)
4, 5, 6, 8, 12, 15
Mean: 4 + 5 + 6 + 8 + 12 + 15 = 50/6 = 8.3
Mode: no mode
Write the equation of a line that is perpendicular to the given line and that passes through the given point. y = 3/4x -9; (-8, 18)
Answer: y=-4/3x+22/3
Step-by-step explanation:
the slope of a perpendicular line is the "negative reciprocal" of the slope of the original line
y=-4/3x+b
if you put in the x and y values
18=-4/3*-8+b
18-32/3=b
b=22/3
y=-4/3x+22/3
Alan made a small four sided table for his office .Two sides of the table are 27 inches long and 36 inches long .If the diagonal of the table is 40 inches ,does the table have a right angle at the corners
Answer:
does NOT have right angles at the corners
Step-by-step explanation:
we are given that the sides of a table are 27" and 36" long.
If we assume the table to be rectangular, then by Pythagorean formula, we can find the diagonal and compare it to the 40" that we are given.
(refer to attached)
diagonal² = 27² + 36²
diagonal² = 27² + 36²
diagonal² = 2025
diagonal = √2025
diagonal = 45 inches
because the diagonal that we found is not the same as the 40" that was given, we can conclude that the table is not a rectangle (i.e does not have right angles at the corners)
Find the area of the triangle QRS, R(6, 10) Q(-9, 5) S(2, -10)
Answer:
[tex]Area = 140[/tex]
Step-by-step explanation:
Given
R(6, 10)
Q(-9, 5)
S(2, -10)
Required
Area of triangle RQS
The are of RQS is calculated using the following formula;
[tex]Area = \frac{1}{2} [R_x(S_y - Q_y) + Q_x(R_y - S_y) + S_x(Q_y - R_y)][/tex]
Where x and y represent the axis of the given coordinates;
Given that R(6, 10);
[tex]R_x = 6 ; R_y = 10[/tex]
Given that Q(-9, 5);
[tex]Q_x = -9 ; Q_y = 5[/tex]
Given that S(2, -10);
[tex]S_x = 2 ; S_y = -10[/tex]
By Substituting these values in the given formula;
[tex]Area = \frac{1}{2} [R_x(S_y - Q_y) + Q_x(R_y - S_y) + S_x(Q_y - R_y)][/tex]
[tex]Area = \frac{1}{2} [6(-10 -5) + -9(10 - (-10)) + 2(5 - 10)][/tex]
[tex]Area = \frac{1}{2} [6(-15) + -9(10 + 10)) + 2(-5)][/tex]
[tex]Area = \frac{1}{2} [-90 + -9(20)) - 10][/tex]
[tex]Area = \frac{1}{2} [-90 -180 - 10][/tex]
[tex]Area = \frac{1}{2} [-280][/tex]
The expression |-280| means absolute value of -280 and the value is 280
[tex]Area = \frac{1}{2} [-280][/tex]
[tex]Area = \frac{1}{2}* 280[/tex]
[tex]Area = 140[/tex]
Hence, the area of the triangle is 140
Write the word sentence as an equation. Then solve.
The difference between a number c and 13 is −2.
Answer: C-13 = -2 C = 11
Step-by-step explanation:
difference means subtraction.
the wording "is" implies the answer to the equation = -2
let C be a variable
C - 13 = -2
C = -2 + 13 solve for C by getting C by itself
C = 11
The word sentence as an equation will be as C - 13 = -2, then the solution is 11.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
We have been given that difference between a number c and 13 is −2.
Here the difference means subtraction.
Assume C be a variable;
C - 13 = -2
C = -2 + 13
Now solve for C by getting C by itself;
C = 11
Therefore, the word sentence as an equation will be as C - 13 = -2, then the solution is 11.
Learn more about equations here;
https://brainly.com/question/25180086
#SPJ2
What are the solution's of x2-4=0
Answer:
x=2 or x=-2
Step-by-step explanation:
x2−4=0
Step 1: Add 4 to both sides.
x2−4+4=0+4
x2=4
Step 2: Take square root.
x=±√4
x=2 or x=−2
Natasha wants to find out if the neighborhood supports lowering the speed limit on the street in front of her school. Which is a valid sample for the survey? students in Natasha’s social studies class parents who live in a town 15 miles away from Natasha’s school the first 5 drivers who drive past Natasha’s school one morning thirty residents who live within a 2-miles radius of Natasha’s school
Answer:
Thirty Residents Who Live Within a 2-Miles Radius Of Natasha’s School
Step-by-step explanation:
Answer:
The correct answer is "thirty residents who live within a 2-miles radius of Natasha’s school." or (D)
Step-by-step explanation:
teehee
The score below represents Akilahs science exam score 20 90 25 100 85 30 what is the MAD of her test
Answer:
The mean absolute deviation (MAD) of the dataset is 33.333.
Step-by-step explanation:
The mean absolute deviation (MAD) of a dataset is the average distance between each data point and the mean. It gives us an idea about the variability in a dataset.
These are the steps to calculate the mean absolute deviation.
Step 1: Calculate the mean.
[tex]Mean = \frac{20+90+25+100+85+30}{6} =\frac{175}{3}\approx58.333[/tex]
Step 2: Calculate how far away each data point is from the mean using positive distances. These are called absolute deviations.
[tex]|20-\frac{175}{3} |=\frac{115}{3}\\\\|90-\frac{175}{3} |=\frac{95}{3}\\\\|25-\frac{175}{3} |=\frac{100}{3}\\\\|100-\frac{175}{3} |=\frac{125}{3}\\\\|85-\frac{175}{3} |=\frac{80}{3}\\\\|30-\frac{175}{3} |=\frac{85}{3}[/tex]
Step 3: Add those deviations together.
[tex]\frac{115}{3}+\frac{95}{3}+\frac{100}{3}+\frac{125}{3}+\frac{80}{3}+\frac{85}{3}=\frac{600}{3}=200[/tex]
Step 4: Divide the sum by the number of data points.
[tex]MAD=\frac{200}{6} =33.333[/tex]
Ali wraps a birthday present in a tube that has a length of 14 inches and a diameter of 6 inches.
a. a. How much space can the gift hold?
Answer:
395.84
Step-by-step explanation:
The radius squared is nine. 9 times pi then 14, is 395.84
PLEASE HELP WILL MARK BRAINLIEST !!!
Answer:
work is shown and pictured
In the xy-plane, point E has coordinates (4,5) and point O has coordinates (0,0). Which of the following is an equation of the line that contains points O and E?
a)y=x-1
b)y=x+1
c)y=4/5x
d)y=5/4x
Answer:
D
Step-by-step explanation:
You can plug in the given x and y values into the equations and see which one works for both of them.
D works for both of them:
5 = 5/4(4)
0 = 5/4(0)
Answer:
y=5/4x
Step-by-step explanation:
I just took the TSI2 and it says its correct
Dimensions of a cow farm are 650 feet by 255 feet. If 1 inch represents 40 feet, what re the dimensions of the building on the drawing?
Answer:
the dimensions in the drawing are 16.25 inches by 6.375 inches
Step-by-step explanation:
The first thing is to use the same unit on the scale, that is, they tell us that the scale is 1:40 but that scale cannot be applied because they are different units of measurement.
The answer is preferable to give it in inches because it is more adapted to the measurements in a drawing, therefore we will pass the scale all in inches, knowing that 1 foot is 12 inches:
40 feet * 12 inches / 1 foot = 480 inches, therefore the scale is 1: 480
Now, if we pass the dimensions that give us inches, we are left with:
650 feet * 12 inches / 1 foot = 7800 inches
255 feet * 12 inches / 1 foot = 3060 inches
Now applying the scale:
7800/480 = 16.25
3060/480 = 6.375
It means that the dimensions in the drawing are 16.25 inches by 6.375 inches
What is the value of X?
Answer:
20
Step-by-step explanation:
When we use Pythagorean Theorem we get x² + 21² = 29² which means x = 20.
Answer:
B: 20
Step-by-step explanation:
By the pythagorean thereom, x^2+21^2=29^2. Solving gives X^2=29^2-21^2=400, so X=20.
Which expressions are equivalent to 30 - 3y - 9?
3(17-y)
3(20-y-3)
17(3-y)
Or 20(3-3y)-9
Answer:
3(20 - y - 3)
Explanation:
If you expand it:
3 · 20 = 30
3 · -y = -3y
3 · -3 = -9
Combine them altogether to get:
30 - 3y - 9
what is the solution to -4[2×+6]=-24
Answer:
x=0
Step-by-step explanation:
-4(2x+6) = -24
distribute the -4 to the parentheses
-8x-24 = -24
add the 24 over
-8x=0
divide both sides by -8
x=0
What is the probability of drawing a red marble out of the bag without looking?
Answer:
it depends on how many red marbles are there
Step-by-step explanation:
is there any green or orange or yellow?
Answer:1 over 3
Step-by-step explanation:
