Liliana solved the equation below. When she tried to verify her answer, she realized she made an error. One-third (x + 18) = 7
One-third x + 6 = 7
One-third x + 6 minus 6 = 7 + 6
One-third x = 1
x = 3

Which correction should Liliana make?

The final step should be x = one-third.

The third step should be One-third x = 13.

The second step should be One-third x + 6 minus 6 = 7 minus 6.

The first step should be One-third x + 54 = 7.

a. the residual plot for model 1 has a random pattern and is a good fit for the data.

idk

step-by-step explanation:

i don't know

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