Sean has a job to tile a room 15 ft x 20 ft with 1 ft. square tiles. How many tiles does he need?

it would to have a graph or something ! but i had this question so its false

step-by-step explanation:

i am currently in the exact same situation rn. algebra2/adv algebra is killing

step-by-step explanation:

y=x+9

?

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.