The three steps are shown below were used to find an expression equivalent to 2/5( 15x- 30y)+10x step 1: step 2: 16x-12y step 3: 4( 4x-3y) which expression could be used as step 1? a. 2/5 ( 25x -30y) b. 6x-12y+10x c 6x-30y+10x d. 15(x-2y) + 10x

B

step 1 is to distribute the bracket by

= × 15x - × 30y + 10x

= 6x - 12y + 10x ← step 1

all but the second one

step-by-step explanation:

cuz that one goes over 180

mark brainliest

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet