(a) Four cities, conveniently named A, B, C, and D, lie along a very straight road, not necessarily in that order. B is between C and D, and D is between B and A. The
distance from B to C equals the distance from A to D, which is twice the distance
from B to D. The distance from A to C is 250 mi. What is the distance from A to B?
Justify your answer.
(b) In her back yard, Carmen wants to build a swimming pool that is 12 ft by 40 ft.
She also plans to build a deck that is 6-ft wide surrounding the pool. What is the
area of the deck?
I

.632

step-by-step explanation:

6 * 1/10 = 3/5

3*0.01 = 0.03

3/5 + 0.03 = .63

2*0.002 = .002

.63 + 0.002 = .632

im pretty sure it would be 5 am, hope that , and give brainliest and guys if this is right then press the button and give 5 stars

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240