4 years ago

Find the Number in Each Case

1 answer:

6 0

It seems like you have the answer already. but heres how its calculated.
$\frac{100}{15} = \frac{?}{3}$
so the missing number is 20 **cross multiply 100 and 3 to get 300 then divide 15 into 300 to get 20**

$\frac{160}{100} = \frac{80}{?}$
so the missing number is 50
**cross multiply 100 and 80 to get 8000 then divide 160 into 8000 to get 50**

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3 years ago

Solve -9z >/= -72 CHECK YOUR ANSWER

777dan777 [17]

Answer:

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Step-by-step explanation:

-9z ≥ -72

Isolate the variable, z. Treat the ≥ as a equal sign, what you do to one side, you do to the other. Divide -9 from both sides. Note that when you divide a negative number, you will flip the sign:

(-9z)/-9 ≥ (-72)/-9

z ≤ (-72)/(-9)

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z ≤ 8 is your answer.

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