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Need help from mathematics only ?

Need help from mathematics only ?-example-1

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9514 1404 393

Answer:

8. 50 yards

9. 9%

Explanation:

In each case, we fill in the given values in the formula, then divide both sides of the equation by the coefficient of the variable.

8)

The missing formula is ...

A = LW . . . . where A is area, L is length, W is width

6000 yd² = (120 yd)W

W = (6000 yd²)/(120 yd) = 50 yd . . . the width of the field

__

9)

The missing formula is ...

I = Prt . . . . where I is the interest on principal P at rate r for t years

1800 = 5000(r)(4)

r = 1800/20000 = 0.09 = 9% . . . interest rate on the investment

User Andrew Paes
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