Cole spent some time working on his
history homework. then, he spent 5/12
hour working on his spanish
homework. cole spent 1 hour on
homework. what fraction of an hour
did cole spend on history? a 2/12 b5/12 c7/12 d12/12

Time spent on history homework is 7/12 of an hour.

Step-by-step explanation:

Given:

Time spent by Cole for his homework = 1 hour

Time spent on Spanish homework = 5/12 hour

Let

Time spent on history homework be 'x' hours

So the summation of homework hour = 1

Accordingly:

⇒

⇒

⇒

⇒

⇒

⇒

Time spent on history homework by Cole is 7/12 of an hour.

Option C is the right choice.

3/4 (0.75)

Step-by-step explanation:

sin r = 15/20 = 3/4 (0.75)