If 2x + 4 = 20, what is the value of 4x + 5?
A) 8
B) 13
C) 32
D) 37

Step-by-step explanation:

2x+4=20 => 2x=16 => x=8.

therefore putting the value of x in 4x+5.

=> 4x+5=> 32+5 => 37.(D).

Therefore, option D is correct answer.

D) 37

Step-by-step explanation:

2x + 4 = 20

2x = 20 - 4

2x = 16

x = 8

4(8) +5

= 32 + 5

= 37

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21

jk it's 20

step-by-step explanation:

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.