MATHEMATICS HIGH SCHOOL

Brad drives 527 miles on 17 gallons. How many miles does Brad drive on one gallon?31 miles per gallon
527 miles per 17 gallons
5.27 miles per gallon
1 over 31. miles per gallon

Answers

Answer 1

Answer: 31 miles per gallon

Answer 2

Answer:

Answer:

31 miles per gallon

Step-by-step explanation:

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A student made a model of a building. The model was 3 feet high and 12 feet wide. The building is 720 feet wide. Which proportion correctly show how to find the height of the building?

Answers

Ok, so what we do is simply divide 720 by 12
720/12=60 next you just multiply whatever part of the building by 60 in order to get a correct proportion in this case we are doing 60*3=180 and the answer is the height of the building must be 180 feet.

Khloe is thinking of a number that is 2 times the value of Carl's number. Khloe's number is also 2 more than 4 times the value of Carl's number. What is Khloe's number?

Answers

lets x is Carl's number
Khloe is thinking of a number that is 2 times the value of Carl's number = 2x

Khloe's number is also 2 more than 4 times the value of Carl's number: 4x + 2

4x + 2 = 2x
2x = -2
x = -1

Carl's number = -1
Khloe's number = 2(-1) = -2

double check:

4x + 2 = 4(-1) + 2 = -2

answer: Khloe's number is -2

Answer:

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Step-by-step explanation:

A physical fitness association is including the mile run in its secondary- school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 440 seconds and a standard deviation of 50 seconds. Find the probability that a randomly selected boy in secondary school can run the mile in less than 325 seconds.

Answers

Answer:

0.0107 is the probability that a randomly selected boy in secondary school can run the mile in less than 325 seconds.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 440 seconds

Standard Deviation, σ = 50 seconds

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

Formula:

$z_(score) = \displaystyle(x-\mu)/(\sigma)$

P(run the mile in less than 325 seconds)

P(x < 325)

$P( x < 325) = P( z < \displaystyle(325 - 440)/(50)) = P(z < -2.3)$

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

$P(x < 325) = 0.0107 = 1.07\%$

0.0107 is the probability that a randomly selected boy in secondary school can run the mile in less than 325 seconds.

What is 1004 divided by 39?

Answers

25.74 That is the answer I got! Have a great day!!!

Answer:

The answere in a decimal is: 25.7435897, the answere in a fraction is: 25and29/39

A company has two electric motors that consume varying amounts of power. The power consumed by each motor is a function of the time (t in minutes) for which it runs. The cost of power (in $) to run one motor is given by the function `C_a(t) = t^2 - 2t + 5`. The cost of running the second motor is given by `C_b(t) = 3t + 2`. Which function gives the total cost of running both motors?