2 years ago

HELP

Mathematics

1 answer:

Nastasia [14]2 years ago

5 0

Answer: The answer is D

Step-by-step explanation: 12x means 12 times x, which means her age is 12 times her brother's age.

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3 years ago

Read 2 more answers

A chemical company makes two brands

Paladinen [302]

Answer:

16 bags for the first(30% pure) and 64 bags of the second(80% pure)

Step-by-step explanation:

If they are mixed in a ratio of x bags to y bags

(0.3x+0.8y)/(x+y) = 0.7

0.3x + 0.8y = 0.7(x+y)

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3 years ago