Answer:
235
Step-by-step explanation:
Figure the rates per hr.
110/3 = 36 2/3
160/5 = 32.
So, the rates are not the same.
Knowing a bit about plumbers, they normally charge a basic fee to just show up, and then they charge per hr.
In cases like these, where we're asked to project to a new data point (in this case an 8-hr job), you should immediately think of a graph. The x-axis would be the hours worked. The y-axis would be the charge for the work (the cost of the job).
We're given two pairs of values:
(3,110) and (5,160).
The next step is to fit a line to them.
y = mx+b is the general equation for a line.
m = the slope = rise/run = change in y / change in x
Call the change in y, dy (for delta y).
Call the change in x, dx (for delta x).
m = dy/dx = 50/2 = 25
The slope is thus 25, which means for each hour, the price goes up by $25. That means the plumber charges $25/hr.
We also know the plumber charges $110 for a 3-hr job. 3*25 = $75. So the base charge would be $110-75 = $35.
y = 25x + 35
Checking this formula at x=3, we know it is 110.
Checking it at x=5, we obtain:
y = 25*5 + 35 = 125 + 35 = 160.
That checks.
Now to figure an 8-hr job, set x=8 and use the equation"
y = 25*8 + 35.
y = 200 + 35.
y = 235.
That means an 8-hr job costs $235.
If you start at the point (0,0) and walk on a slope that goes up hill, is it positive or
negative in slope?
Positive
Negative
Neither
Both
Answer:
Positive
Step-by-step explanation:
A line with a positive slope on a graph will go upward if you saw the graph left to right.
If you walked on the line, you would walk on a "hill".
It's y-values increase as it's x-values increase.
help ity help ity help help help
- 2 is best described as a coefficient
- x is best described as variable
- 16 is best described as a term
2x, when x = 10
2(10)
20
94 POINTS AND BRAINLIEST TO BEST ANSWER!!!
Answer:
54
Step-by-step explanation:
Diagonals are perpendicular so
2x+ 90 + 3x = 180 since this forms a triangle
Combine like terms
5x+ 90 = 180
Subtract 90 from each side
5x +90-90 =180-90
5x = 90
Divide each side by 5
5x/5 = 90/5
x =18
We want to find Angle ABD
ABD = 3x = 3*18 = 54
Answer:
HOPE THIS HELPS PLS DON"T TAKE IT DOWNN
Step-by-step explanation:
Say that the intersecting point of both diagonals is O
that means that in triangle AOB, all angles add up to 180º that is just the definition of sum of angles in a triangle
and the m<AOB = 90º, diagonals in a rhombus are perpendicular
that means that
90º + 2x + 3x = 180º
90º + 5x = 180º
5x = 90º
x = 18º
if m<ABD = 3x
then its equal to m<ABD = 3(18)
m<ABD = 54º
A rectangle with a width of 2.5 cm and a length of 3 cm is dilated by a scale factor of 4. Which statements about the new
rectangle are true? Check all that apply.
The dimensions of the new rectangle will be 10 cm by 12 cm.
The dimensions of the new rectangle will be 40 cm by 48 cm.
The new perimeter will be 4 times the original perimeter.
The new perimeter will be 16 times the original perimeter.
The new area will be 4 times the original area.
The new area will be 16 times the original area.
The new perimeter will be 44 cm.
The new area will be 30 square cm
Answer:
The new perimeter will be 4 times the original perimeter.
The new area will be 4 times the original area.
Step-by-step explanation:
The area and perimeter of new rectangle will be 120 square cm and 44 cm. Then the correct options are A, C, F, and G.
What is dilation?Dilation is the process of increasing the size of an item without affecting its form. Depending on the scale factor, the object's size can be raised or lowered.
A rectangle with a width of 2.5 cm and a length of 3 cm is dilated by a scale factor of 4.
L = 3 cm
W = 2.5 cm
Then the new dimension of the rectangle will be
W' = 4 x 2.5 = 10 cm
L' = 4 x 3 = 12 cm
Then the perimeter of the rectangle will be
P = 2(L + W)
Then the perimeter of the new rectangle will be
P = 2(4L + 4W)
P = 4 x 2(L + W)
The new perimeter is the 4 times of original perimeter.
P = 8(2.5 + 3)
P = 44 cm
The area of the rectangle will be
A = L x W
Then the area of the new rectangle will be
A = 4L x 4W
A = 16 x L x W
The new area is the 16 times of original area.
A = 16 x 2.5 x 3
A = 120 square cm
Then the correct options are A, C, F, and G.
More about the dilation link is given below.
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A drawing of a box has dimensions that are 2 inches, 3 inches, and 5 inches. If the drawing is on a 1: 8/3 scale, What are the dimensions of the actual box?
Answer:
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Answer: the dimensions would be 1/8
Step-by-step explanation:
The lowest temperature in January was
7°F. Which inequality represents all the
temperatures x in January?
Answer:
x≥7°F
Step-by-step explanation:
This is because 7°F is the lowest temperature and so all other temperatures of the day were greater than that one.
An object moves in simple harmonic motion with amplitude 15 m and period 2. At time t=0 minutes, it’s displacement d from rest is 0 m, and initially it moves in a negative direction. Give the equation modeling the displacement d as a function of time t.
Answer:5
Step-by-step explanation:
Which of these is NOT equivalent to 2-37
Well, i'm gonna need a picture so I can answer it...
At the movie theater , child admission is $5.80 and the adult admission is $9.20. On wednesday , 113 tickets were sold for a sales of $866.20. How many adult tickets were sold that day?
Answer:
62 adults and 51 kids
Step-by-step explanation:
what is the value of the expression r +1988 if r =2976
If all three sides of a triangle have length x, what is the perimeter of the triangle?
Answer:
3x (i think)
Step-by-step explanation
Answer:
3x
Step-by-step explanation:
I did the quiz and this was the answer ;)
The temperature was 54 at 7:00 a.m. At 3:00 p.m. on the same day, the temperature was 82. What is the rate of change in temperature during this time?
Answer:
The rate of change was 3.5 degrees / h.
Step-by-step explanation:
In order to calculate the rate of change we need to divide the variation of temperature by the variation of time. Since the time is given to us in a 12 h format (am/pm), we first need to convert it to 24 h. To do that we sum the time that is "pm" by 12, we have:
time2 = 3 + 12 = 15
Therefore the rate of change in temperature is:
rate = variation of temp / variation of time
rate = (temp final - temp init) / (time final - time init)
rate = (82 - 54) / (15 - 7) = 28 / 8 = 3.5 degrees / h
The rate of change was 3.5 degrees / h.
(A+) It takes a painter and his friend 8 hours to paint a room. If the painter was working alone, it would take him 12 hours less than if his friend was working alone. How long does it take the painter to paint the room by himself?
Answer:
24 hours
Step-by-step explanation:
Order from least to greatest
A.5/16 inch
B. 1/8 inch
C.1/2 inch
D.1/16 inch
E.3/8 inch
F.1/4 inch
Answer:
1/16, 2/8, 1/4, 3/8, 1/2, 5/16
Step-by-step explanation:
Answer: 1/16 < 1/8 < 1/4 < 5/16 < 3/8 < 1/2
Think of these fraction as a slice of pizza. You get the smallest fraction then you get a small slice of pizza. You get the biggest slice then you get a big slice of pizza.
1/2 is the biggest so that means if u get a pizza cut into 2 slices and you get 1 that is the biggest piece you get.
Which value of the vanable is a solution of the inequality? t<-6
7
6
-6
-7
Answer:
-7
Step-by-step explanation:
-7 is a solution of the inequality t<-6
By the way, for the number -6, you can think about a temperature below zero. When it is freezing 6 degrees below zero (-6) it is pretty cold.
The question is which number(s) can you substitute for t so that the formula (the inequality) is True.
So let's try for each given value and substitute it for t in t<-6
if you substitute 7 for t you get this:
Is 7 smaller then -6 ?
No that is not true because 7 is bigger then -6.
if you substitute 7 for t you get this:
Is 7 smaller then -6 ?
No that is not true because 7 is much bigger then -6.
if you substitute 6 for t you get this:
Is 6 smaller then -6 ?
No that is not true because 6 is much bigger then -6.
if you substitute -6 for t you get this:
Is -6 smaller then -6 ?
No, that is NOT true because -6 is exactly the same as -6 but NOT smaller then -6...
if you substitute-7 for t you get this:
Please think about temperatures below zero again.
Is -7 colder the -6 ? If so, then the statement is true...
Is -7 smaller then -6 ?
Yes that is true!
So -7 is a solution of the inequality t<-6
The scatter plot shows data collected on the number of students who get off the bus at the first and the last stop of various school bus routes. Which statement is true? A. The data in the scatter plot shows a negative linear correlation. B. The data in the scatter plot shows a nonlinear correlation. C. The data in the scatter plot shows a positive linear correlation. D. The data in the scatter plot shows no correlation.
Answer:I think it’s A but I’m not sure and atleast there is an answer to this
Step-by-step explanation:
Hence, the option (A) is the correct answer.
What is the data collection?
Data collection is defined as a method of collecting, analyzing data for the purpose of validation and research using some techniques.
Here given that,
The scatter plot shows data collected on the number of students who get off the bus at the first and the last stop of various school bus routes
As the students get off at the first and the last stop they both are in opposite direction/negative direction.
Hence, the option (A) is the correct answer.
To know more about the data collection
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5. Find the area of an equilateral triangle with a
perimeter of 24 in.
what’s the area?
Answer:
18
Step-by-step explanation:
24÷3=6 6×6=36 36÷2=18
can you put 26 45 21 35 38 50 52 28 34 26 40 42 48 25 30 in order
Answer:
21 25 26 26 28 30 34 35 38 40 42 45 48 50 52
Step-by-step explanation:
21 25 26 26 28 30 34 35 38 40 42 45 48 50 52
(08.01 LC)
The track-and-field coach wants to know whether the students in the entire school prefer track races or field events. The coach draws a random sample from the following groups:
All students in each grade
All teachers in the school
All boys in each grade in the school
All students on the track-and-field team
Which group best represents the population she should take a random sample from to get the best results for her survey?
Answer:
all students on the track-and-field team
Step-by-step explanation:
if the coach wants to find out if they prefer track or field he/she has to ask the people who are experiencing it right now and tell him or her if they prefer this or not
Answer:
It is All students on the track-and-field team.. Im in flvs 7th and I know Im VERY late and I am currently doing the test RN so Thats all GUYS!
Step-by-step explanation:
A scale drawing of a regular parking lot is shown. If the length (longer side) of the parking lot is actually 48 meters, what is the scale factor for the drawing?
(Answer must be written to the nearest hundredth below. )
______ meters
The length of the sides of a square is 10 meters. Find the length of the diagonals of the square
｡☆✼★ ━━━━━━━━━━━━━━ ☾
Use Pythagoras' theorem:
a^2 + b^2 = c^2
Sub the values in:
10^2 + 10^2 = c^2
200 = c^2
Square root to find the answer:
c = 14.14
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The length of the diagonals of the square is equal to 14.142 or [tex]10\sqrt{2}[/tex] meters.
Given the following data:
Length of sides = 10 meters.To calculate the length of the diagonals of the square:
In order to find the length of the diagonals of the square, we would multiply the one side of the square by the square root of 2.
Mathematically, this is given by the formula:
[tex]Diagonal = length \times \sqrt{2}[/tex]
Substituting the given parameters into the formula, we have;
[tex]Diagonal = 10 \times \sqrt{2}\\\\Diagonal = 10 \times 1.4142[/tex]
Diagonal = 14.142 meters.
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please help i'll mark brainliest if your answer is correct
You get a student loan from the New Mexico Educational Assistance Foundation to pay for your educational expenses this year. Find the interest on the loan if you borrowed $2,000 at 8.5% for 3 year.
Answer:
$554.58
Step-by-step explanation:
The interest on the loan can be computed by first determining the future value of the loan in three years as follows:
FV=PV*(1+r)^n
PV is the amount of the loan which is $2,000
r is the interest rate which is 8.5%
n is the number of years which is 3 years
FV=$2000*(1+8.5%)^3=$ 2,554.58
Since the value of the loan in three years is $ 2,554.58 ,the interest on the loan is the difference between the future value and the present value
interest=$ 2,554.58-$2,000.00=$554.58
When she was in year 8,Sarah could run 800 meters in 3 minutes and 20 seconds.
Three years later, when she was in year 11, she could run 800 meters in 2 minutes and 40 seconds.
Find the percentage improvement in her time and show your working out.
Answer:
125% improvement
Step-by-step explanation:
3min 20sec = 200sec
2min 40sec = 160sec
800meters/ 200sec = 4 meters per second
800meters/ 160sec = 5 meters per second
5/4 : x/100
4x = 500
x = 125
I need help please
Thank you
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Volume = length x width x height
Substitute the values in:
Volume = 10 x 9 x 32
Solve to get the answer
Volume = 2880 in^3
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Answer:
[tex]2880 {in}^{3} [/tex]
Step-by-step explanation:
[tex]V
=
w
h
l
\\
=
10
·
32
·
9
\\
=
2880
{in}^{3} [/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
Bradley goes to a fast food restaurant and orders some tacos and burritos. He sees on the nutrition menu that tacos are
140
calories and burritos are
430
calories. If he ordered
7
items and consumed a total of
2720
calories, how many tacos and how many burritos did Bradley order and eat?
Answer:
6 burritos and 1 taco
Step-by-step explanation:
(6*430)+(1*140)
=2720
Can someone solve these quick please
Answer:
brickopoijhukkjijhukkiouhijkjkj
Step-by-step explanation:
Answer:
hehehehehehehhehheheheheheh
Step-by-step explanation:
Look at the attachment to see if you could help me out!
Answer:
Answer is D
Step-by-step explanation:
Move all terms not containing y
to the right side of the equation.
y = 2 x + 5
Use the slope-intercept form to find the slope and y-intercept.
Slope:
2
y-intercept:
5
Any line can be graphed using two points. Select two
x values, and plug them into the equation to find the corresponding
y values.
Graph the line using the slope and the y-intercept, or the points.
Slope:
2
y-intercept:
5
Which statement best describes the data in a scatter plot where the y-values are decreasing as the x-values are increasing? *
A.The data can best be modeled by a vertical line.
B.The data can best be modeled by a horizontal line.
C.The data can best be modeled by a line with a positive slope.
D.The data can best be modeled by a line with a negative slope.
Answer:
D
Step-by-step explanation:
When Colton commutes to work the amount of time it takes him to arrive is normally distributed with a mean of 41 minutes and a standard deviation of three minutes what percentage of his commute will be between 33 and 35 minutes to the nearest tenth?
Answer:
The Probability that commute will be between 33 and 35 minutes to the nearest tenth = 0.0189 ≅1.89%
Step-by-step explanation:
Step(i):-
Given mean of the Population(μ) = 41 minutes
Given standard deviation of the Population (σ) = 3 minutes
let 'X' be the random variable of Normal distribution
Let X = 33
[tex]Z = \frac{x -mean}{S.D} =\frac{33-41}{3} = -2.66[/tex]
let X = 35
[tex]Z = \frac{x -mean}{S.D} =\frac{35-41}{3} = -2[/tex]
Step(ii):-
The Probability that commute will be between 33 and 35 minutes to the nearest tenth
P(33≤ X≤35) = P(-2.66 ≤X≤-2)
= P( X≤-2) - P(X≤-2.66)
= 0.5 - A(-2) - (0.5 - A(-2.66)
= 0.5 -0.4772 - (0.5 -0.4961) (From normal table)
= 0.5 -0.4772 - 0.5 +0.4961
= 0.4961 - 0.4772
= 0.0189
The Probability that commute will be between 33 and 35 minutes to the nearest tenth = 0.0189 ≅1.89%