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butalik [34]
3 years ago
6

A tire is slowly deflating. The graph below shows the pounds per square inch (psi) of pressure as a function of time.

Mathematics
1 answer:
nadezda [96]3 years ago
3 0

Answer:The rate is 4

Step-by-step explanation:

32/8

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Select the correct answer.
inn [45]

Answer:

B. Step 3

Complete question found on chegg:

Select the correct answer.

A mistake was made in the steps shown to simplify the expression.

Which step includes the mistake?

9/2 + 3(4-1) -7 + 2³

Step 1: 9/2 + 3(3) -7 + 2³

Step 2: 9/2 + 3(3) -7 + 8

Step 3: 15/2 (3) -7 + 8

Step 4: 45/2 -7 + 8

Step 5: 31/2 + 8

Step 6: 47/2

A. Step 4

B. Step 3

C. Step 1

D. Step 5

Step-by-step explanation:

To determine where the mistake occurred let's solve the expression ourselves and compare with answer L's given.

9/2 + 3(4-1) -7 + 2³

Using BODMAS = Bracket, Of, Division, Multiplication, Addition and Subtraction.

Step 1: solve for the value in the bracket. 4-1 =3

9/2 + 3(3) -7 + 2³

Step 2: find the value of 2³

2³ = 2×2×2 = 8

9/2 + 3(3) -7 + 8

Step 3: add 9/2 and 3(3)

9/2 + 3(3) = 9/2 + 9 = (9+18)/2

= 27/2 = (9/2)(3)

9/2 (3) -7 + 8

Step 4: open the bracket

27/2 -7 + 8

Step 5: subtract 7 from 27/2

= (27-14)/2 = 13/2

13/2 + 8

Step 6: add 13/2 and 8

13/2 + 8 = (13+16)/2 = 29/2

From the above calculation, the mistake occurred in (B) Step 3

5 0
3 years ago
Read 2 more answers
Which ratio would allow you to conver from 45 cm into feet
seropon [69]

Answer:

1:0.0328084

Step-by-step explanation:

1 cm = 0.0328084 foot

6 0
3 years ago
The volume of a cube, in cubic centimeters, is given by the function V(x) = x3, where x is the side length of the cube in centim
Sav [38]

I think we can all agree that 1 centimeter=10millimeters.

And if x is the side in centimeters then 10x will be the side in millimeters.

We just need to rewrite x^3 into (10x)^3.

Because you need to do the exponent to all part of the ( )...

(10x)^3=1000x^3

V(x)=1000x^3 cubic millimeters is the answer

5 0
3 years ago
HELP MEEEEEE PLEASEEEEEEEEEEEEEEE
lakkis [162]

Answer:

If she returns the skis at 3 p.m. she would pay $25. IM NOT SURE ABOUT 3:05 PM

Step-by-step explanation:

Start on the hours rented side. If she rents them at noon you would be at zero. Move to the 3 (in between 2 and 4) then if you go up it hits $25 on the rental cost side.

8 0
2 years ago
Read 2 more answers
A set of final examination grades in an introductory statistics course is normally​ distributed, with a mean of 77 and a standar
Shalnov [3]

Answer:

0.9007 is the probability that a student scored below 86 on this​ exam.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 77

Standard Deviation, σ = 7

We are given that the distribution of examination grades is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

a) P(student scored below 86)

P(x < 86)

P( x < 86) = P( z < \displaystyle\frac{86 - 77}{7}) = P(z < 1.2857)

Calculation the value from standard normal z table, we have,  

P(x < 1.2857) = 0.9007 = 90.07\%

0.9007 is the probability that a student scored below 86 on this​ exam.

7 0
3 years ago
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