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3 years ago

tim can run three miles in 20 minutes if he maintain his speed how long will it take him to run 9 miles

Mathematics

1 answer:

Arlecino [84]3 years ago

5 0

Answer:

60 minutes or 1 hour

Step-by-step explanation:

My picture is my worked out solution :)

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Marta is solving the equation S = 2πrh + 2πr^2 for h. Which should be the result?

olga_2 [115]

Answer:

h = $\frac{S}{2πr}$ - r

Step-by-step explanation:

The question requires you to make h the subject of the formula.

S = 2πrh + 2πr²

subtract 2πr² on both sides.

S - 2πr² = 2πrh - 2πr² - 2πr²

S - 2πr² = 2πrh

Dividing both sides by 2πr

(S - 2πr²)/2πr = 2πrh/ 2πr

h = $\frac{S}{2πr}$ - r

7 0

3 years ago

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A man does not eat for. One week how many hours is that

Artist 52 [7]

Answer:

1 week = 168 hours

Step-by-step explanation:

1 week = 7 days

1 day = 24 hours

1 week * 7 days/ 1 week * 24 hours/1 day = 168 hours

So 1 week = 168 hours

8 0

3 years ago

Read 2 more answers

Help!!!!! Not the top one by the way..!

OverLord2011 [107]

Answer:

$\large\boxed{x=-3\ and\ y=-11\to(-3,\ -11)}$

Step-by-step explanation:

$\underline{+\left\{\begin{array}{ccc}-6x+y=7\\3x-y=2\end{array}\right}\qquad\text{add both sides of the equations}\\\\.\qquad-3x=9\qquad\text{divide both sides by (-3)}\\.\qquad\boxed{x=-3}\\\\\text{Put the value of x to the first equation:}\\\\-6(-3)+y=7\\18+y=7\qquad\text{subtract 18 from both sides}\\\boxed{y=-11}$

3 0

3 years ago

(-12)^9 negative or positive

g100num [7]

(-12)^9 is a negative because a negative times a positive is negative. The answer to (-12)^9 is -5159780352.
Hope you learned something :)

3 0

3 years ago

Twenty-seven minus 3/2 of a number (x) is not more than 36. What is the number?

drek231 [11]

27 - 1.5x ≤ 36
54 - 3x ≤ 72
54 - 72 ≤3x
-18 ≤ 3x
-6 ≤ x
x ≥ -6

6 0

3 years ago

Read 2 more answers