Answer:
m∠B=79°
Step-by-step explanation:
∠A +∠B+∠C+∠D=360°
14x-11+8x+7+5x+18+10x+13=360°
37x+27=360°
37x=333
x=9
so,
m∠B=8x+9
m∠B=8×9+7
m∠B=79°
Hope it helps!
Answer:
20 ft²
Step-by-step explanation:
the area (A) of a triangle is calculated using the formula
A =
bh ( b is the base and h the height )
here b = 5 and h = 8
A =
× 5 × 8 = 20 ft²
3 16
Explanation
Factor the numerator and denominator and cancel the common factors.
2(x+2)=3(x-3)
2x+4=3x-9
2x=3x-13
-x=-13
x=13
The number is 13
Answer: 4188.8
Step-by-step explanation: