When Nachelle runs the 400 meter dash, her finishing times are normally distributed with a mean of 87 seconds and a standard deviation of 1.5 seconds. Using the empirical rule, what percentage of races will her finishing time be between 84 and 90 seconds?

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

y > 1/3x

y < = -x + 4

hope this : )

step-by-step explanation:

there are 36 inches in a yard

25 : 36 = 0.69 yards (you can round to 0.70)

answer: apothems is your answer

step-by-step explanation: hope u get it right