Which of the following steps would be used to solve the equation for y? Select all that apply. -2x -3y= 21

Options:
A:Divide both sides by -2
B:Divide both sides by 2
C:Divide both sides by 3
D:Divide both sides by -3
E: Subtract 2x from both sides
F:Subtract 3y from both sides
G:Add 3y to both sides
H:Add 2x to both sides

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

1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours

i would say c

step-by-step explanation:

-5, your answer was correct