12. darnell keeps his cotton socks folded in pairs
in his drawer. five pairs are black, 2 pairs are
navy, and 1 pair is brown. in the dark, he
pulls out one pair at random. what are the
odds that it is black?

5/8 or 62.5%

Step-by-step explanation:

There are a total of 8 pairs of socks and 5 black ones, so the ratio is 5/8. We can divide this and get the percent by 5/8=0.625 and multiply by 100% which equals 62.5%.

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

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step-by-step explanation: