4-n=-15 what does n equal

Step-by-step explanation:

Given

4 - n = - 15

n = 4 + 15

Therefore n = 19

n=19

Step-by-step explanation:

To solve, we need to get n by itself.

First, move all the numbers to one side of the equation

4-n=-15

Subtract 4 from both sides

4-4-n= -15-4

-n=-19

Now all the numbers are on one side, and the variables are on the other. n is still not by itself, or is being multiplied by -1. To undo this, divide both sides by -1.

-n/-1=-19/-1

n=19

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

it is not that hard all u have to do is plot the graph

step-by-step explanation: