MATHEMATICS MIDDLE SCHOOL

If Joseph runs 1/5 mile in 1/30 of an hour, what is his speed in miles per hour?

Answers

Answer 1
Answer:

Answer: 6 miles per hour

Step-by-step explanation:

1/30 of an hour is 2 minutes

he ran 1/5 of a mile in 2 minutes so

5/5 of a mile = 1 mile  

5 x 2 min = 10 minutes

Take 6 x 10 minutes to = 1 hour

So 6 x 1 hour is 6 miles and hour.
Answer 2
Answer:

Answer:

a is the right answer

Step-by-step explanation:

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Greatest common factor in 8 and 14

1/5 (5b+ 15)
plzz help

Answers

Answer:

b+3

Step-by-step explanation:

You carry 1/5 and multiply it to 5b and 15 to get b+3.

The sum of three consecutive even numbers is 78. What is the first number

Answers

even consecutive numbers are 2 apart
(2,4,6, example)
so they are
n,n+2,n+4
their sum is 78
n+n+2+n+4=78
3n+6=78
minus 6
3n=72
divide 3
n=24
smallest is 24
3x + 3 = 78
3x = 75
x = 25
So the three numbers are 25, 26, and 27.

The outdoor temperature was 18 degree at midnight. The temperature declined 7 degree each hour for the next 4 hours. What was the temperature at 4 a.m?

Answers

midnight is 12
12 to 1 is 1 hour
1 to 2 is 2
2 to 3 is 3
3 tof 4 is 4 hour
4 hour total

 amount declined=number of hours times amount decilie per hour
amount decline=4 times 7=28

18 decline 28
18-28=-10

end temp at 4am=-10 degrees
any choices? it would help :)

What is 2 and 5/12-( -2 and 1/6) ?

Express the answer in simplest form.

Answers

Find the LCD, and modify the first fraction. the new equation is: 2 5/12 - (-2 2/12). since subtracting a negative is the same as adding, you add the second fraction: 2 5/12 + 2 2/12. add the fractions, and add the whole numbers. the answer is: **4 7/12**

A cylindrical water tank is being filled with a hose. The depth of the water increases by 114 feet per hour. How many hours will it take for the water level in the tank to be 312 feet deep? Enter your answer as a mixed number in simplest form in the box. hours ?

Answers

The answer would be 2 3/4 hours 

Kaley cuts half of a loaf of bread into 4 equal parts. What fraction of the whole loaf does each of the 4 parts represent?

Answers

When you cut a loaf of bread into 4 parts it is 1/4 since you would need 3 more 1/4 to create 4/4. 
1/4 x 4 =4/4
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