MATHEMATICS HIGH SCHOOL

If one vehicle is going 20 mph and another is going 60 mph, the one going 60 mph has __9____ times the force at impact as the one going 20 mph.

Answers

Answer 1
Answer:

Answer:

Assuming that both vehicles have the same mass: It´s 9 times

Step-by-step explanation:

You can use the formula for kinetic energy which is: K = (mv^2)/(2)

We can calculate two different values for each speed. We assume that the mass is "m"

K_1 = (m(20)^2)/(2) = (400m)/(2) = 200m\n\nK_2 = (m(60)^2)/(2) = (3600m)/(2) = 1800m\n\n

As you can see the K2 is 9 times bigger than K1

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What is the probability of getting 2 heads up and 1 tails up when flipping three coins?A. 1/6
B. 1/4
C. 3/8
D. 2/3

Answers

Answer: C:3/8

Step-by-step explanation:

Answer: C. 3/8

Step-by-step explanation:

What is the volume of a rectangular prism with a length of 812 cm, width of 913 cm and a height of 1225 cm?

Answers

812*913*1225 = 908161100cm^3
or 8.12*9.13*12.25 = 908.1611 m^3
Volume is Length X width X height. They already give you the values, so you'd multiply 812 by 913 and 1225, which would give you;

908161100

Jesse earns $12.62 an hour, plus she earns overtime for hours exceeding 40 hours per week. What is her gross weekly pay for working 47 hours if she gets time and a half for overtime?A) $541.73
B) $600.14
C) $637.31
D) $849.71

**NOTE: My answer choice is d

Answers

the correct answer is c) $637.31

12.62 x 40 = 504.8

time and a half is the amount you get paid + half the amount you get paid 

so half of 12.62 is 6.31 + 12.62 = 18.93

18.93 x 7 = 132.51

504.8 + 132.51 = 637.31

Simplify the expression. 12^–3 • 12^10 • 12^0A. 1

B. 1728^7

C. 12^7

D. 36^7

Answers

since they have the same base we can just add all the exponents

-3+ 10= 7

keep the base so the answer is
12^7

[Please help ASAP!]The table shows music preferences. What type of music do you prefer?
What type of music do you prefer?
Pop Classical Rap Jazz Rock Row totals
Male student: 80 60 80 70 100 390
Female student: 200 150 20 70 50 490
Column totals: 280 210 100 140 150 880


Pop Classical Rap Jazz Rock Row totals

80 60 80 70 100 390 (Male student)

200 150 20 70 50 490 (Female student)

280 210 100 140 150 880 (Column totals)

Which of the following are possible positive associations or observations? (1 point)


1. Rock music is the most popular music for each category of students.

2. The largest difference in conditional relative frequency between males and females is for pop music.

3. The smallest difference in conditional relative frequency between males and females is for jazz music.

4. Male and female students have the same conditional relative frequency for rap music.

Answers

Answer:

The answer is 2.

The largest difference in conditional relative frequency between males and females is is for pop music.

Step-by-step explanation:

                   males     females      difference

Pop                 80          200                120     ←this shows that pop has the

Classical         60         90                  90               greatest difference

Rap                  80         20                  60

Jazz                 70         70                   0

Rock               100         50                 50

Total               390        490              100

Answer:

it is number 3  The smallest difference in conditional relative frequency between males and females is for jazz music.

Step-by-step explanation:

5. The recent electric bills for the Cox family were as follows: September, 87.55; October, 97.34; November, $100.44; and December, $156.88. What's their average monthly electric bill cost?​

Answers

Answer:

$110.55.

Step-by-step explanation:

To find the average monthly electric bill cost for the Cox family, you need to add up the costs for each month and then divide the sum by the number of months.

Here are the steps:

1. Add up the costs for each month:

- September: $87.55

- October: $97.34

- November: $100.44

- December: $156.88

The sum of these costs is $87.55 + $97.34 + $100.44 + $156.88 = $442.21.

2. Determine the number of months. In this case, there are 4 months.

3. Divide the total cost by the number of months to find the average:

Average monthly electric bill cost = $442.21 ÷ 4 = $110.55.

Therefore, the Cox family's average monthly electric bill cost is $110.55.

Answer:

Their average monthly electric bill is at 110,55

Step-by-step explanation:

To get the awnser you have to add all the numbers together, then you have to devide the number yoy got with how many number there are.
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