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1. 12

2. -23

3. 15

Step-by-step explanation:

We are given a and b, so we just plug these in.

a = 1/4 or 0.25

b = 6

-8(0.25)(6) = 12

16a^2 - 4b

16(.25)^2 - 4(6) = -23

(5b)/(32a^2)

5(6)/32(.25)^2 = 15

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

180°

step-by-step explanation:

sum of equilateral triangle=180°

< n=60°

< m=120°°[angle supplementary of equilateral angle]

< m+< r+< x=360°(sum of exterior angle of triangle)