Question : Write the expression. Let f represent the number of feet.
12 times the number of feet.
Question : Why should you NOT use the x?
Group of answer choices :

1. That is a symbol for lower grades.

2. It looks too close to the plus sign.

3. It looks like the variable x.

4. You CAN use it.

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.

mujhko hui na

you first to choose the points and then move from then as the slope you have

ιт ιѕ 6/23

step-by-step explanation:

нσρє ι ¢συℓ∂ нєℓρ!