Answer:
D. 8246
Step-by-step explanation:
area= x^2+8x+7
a=l*w
l=x+7
w=x+1
a=(x+7)(x+1)
a= x^2+8x+7
they travel 115 km/h long
b = 24 ft
h = 10 ft
120 = ½hb
120 = ½h(3h - 6)
240 = h(3h - 6)
240 = 3h² - 6h
80 = h² - 2h
0 = h² - 2h - 80
0 = (h - 10)(h + 8)
h = 10 ft or -8 ft
we ignore -8 as it makes no sense for a triangle side length.
b = 3(10) - 6 = 24 ft
Hello,
Answer A : 11.2 ≤ X ≤ 29.2
