3 years ago

Which expression shows how to correctly determine the speed in meters per second?

Mathematics

1 answer:

inn [45]3 years ago

3 0

Answer:

B.?

Step-by-step explanation:

i just took the test and i think B.18 seconds ÷ 402 meters

is the right answer plz tell lily~chan if shes wrong!

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A craftsman is making a dulcimer with the same dimensions as the one shown. The surface shown requires a special, more durable t

Bogdan [553]

Answer:

$\displaystyle A=\frac{3h^2}{2}+h$

Step-by-step explanation:

Area of trapezoid

Given a trapezoid shape whose parallel sides measure b1 and b2 and whose height (perpendicular to the base) is h, then the area of the trapezoid is given by

$\displaystyle A=\frac{b_1+b_2}{2}\cdot h$

The dulcimer has the following dimensions

$b_1=2h+1$

$b_2=h+1$

and height h

Thus

$\displaystyle A=\frac{2h+1+h+1}{2}\cdot h=\frac{3h+2}{2}\cdot h$

Operating

$\displaystyle A=\frac{3h^2+2h}{2}=\frac{3h^2}{2}+h$

$\boxed{A=\frac{3h^2}{2}+h}$

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3 years ago

Kyler Ran 28 miles in 4 days what was Kyler's unit rate of miles to a day?

igomit [66]

Answer:

7 is the unit rate.

Step-by-step explanation:

7 because 7x4 is the 28.

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Dmitry_Shevchenko [17]

4x=y
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Solve 5t < -15 T< 3 T< -3 T> 3 T > -3

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Answer:

Step-by-step explanation:

5t < -15 (divide by 5 on each side)

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