The answer is c. See explanation below.
The sum of these two angles is 180°, therefore,
138° + (x + 8)° = 180°.
Simplify the left side of the equation.
146° + x = 180°.
Subtract 146 from both sides.
x = 34°
⇒ Start with equality property
⇒ Using the subtraction/addition property to subtract 2 from both sides
⇒ Using the multiplication property (multiply both sides by 6)
x = 78
Answer:
the answer is 290
Step-by-step explanation:
A = 2(wl + hl + hw)
P=2l+2w
P=2(120)+2(90)
P=240+180
P=420
420 feet of fencing is needed.