Stephen researched the topic of solar-powered light for his science project. he exposed 10 new solar lights to five hours of sunlight. he recorded the number of minutes each light. continued to shine after dark in the list below.

63, 67, 73, 75, 80, 91, 63, 72, 79, 87

which of these numbers is the mean of the number of minutes in stephen's list?

a. 28

b. 63

c. 74

d. 75

2 and 1.

step-by-step explanation:

plug in each answer. 0 doesn't work, 1 does. so does 2. 4 doesn't:

0 = 1 is not true.

2 = 2 is true.

4 = 4 is true.

8 = 16 is not true.

hope this !

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1

inverse operation of addition