Which two expressions are equivalent? Hint: Think back about Properties
A-(13= y) – 2 and 13 = (y - 2)
B-13 - (2 + y) and (13 - 2) + y
C-(5 + 8) + y and 5 + (8 + y)
D-2•(y - 5) and 2 • y - 5

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

step-by-step explanation:

left be aligning the decimal points is required to not required see the number of digits to the right

0.038

step-by-step explanation:

x= 3^y

step-by-step explanation: