Answer:
D. 1
Step-by-step explanation:
The signs of the terms are +---, so there is 1 change of sign. That means there is 1 positive real root. Profit is zero exactly one time.
Solve for x: -10(x + 2) - 5x = -9x + 16
2 answers:
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Answer:
area = 50 cm²
Step-by-step explanation:
The area (A) of a trapezoid is calculated as
A = h (a + b)
where h is the perpendicular height and a, b the parallel bases
Here h = 4, a = 15 and b = 10, thus
A = × 4 × (15 + 10) = 2 × 25 = 50 cm²