<span>42=-2d+6
Here, to find d, you need to separate it on one side.
First, subtract 6 from both sides.
42-6 = -2d + 6 - 6
36 = -2d
Now divide both sides by -2.
36/-2 = -2/-2d
-18 = d
The answer to this problem is -18, or d = -18.</span>
Answer:
The triangle should be 16 inches wide.
Step-by-step explanation:

What we know:
- One of the legs measures 12 inches.
- The hypotenuse is 20 inches.
We need to solve for b. Solving for a while b is 12 would also be acceptable.

We will use the first equation.


The triangle should be 16 inches wide.
Answer:
25
Step-by-step explanation:
Answer:
448
Step-by-step explanation:
A=((a+b)/2) h=(17+39)/2·16=448
Answer:
The final angle is 50
Step-by-step explanation:
All quadrilaterals have interior angles that add up to 360. So we can subtract these numbers from 360 to get the final angle.
360 - 90 - 100 - 120 = 50