Answer:
-2
Step-by-step explanation:
Let's call the number x. The statement tells us that
x^2 - 10 = 3x, or
x^2-3x-10 = 0
Factoring:
(x-5)(x+2) = 0. Here, we see that there are two solutions: x = 5 and x = -2. So, the negative solution is x = -2.
After 3 hours, Plane A has flown (425 mi/h)*(3 h) = 1275 mi.
After 3 hours, Plane B has flown (375 mi/h)*(3 h) = 1125 mi.
Since the distances flown are in directions that are at a right angle to each other, the Pythagorean theorem can be used to figure the separation. The distance between planes after 3 hours is
√(1275² +1125²) = √2,891,250 ≈ 1700.4
After 3 hours, Plane A is about 1700 miles from Plane B.
Answer:
144.5 cm²
Step-by-step explanation:
length x breathe + 1/2 base x height
9*13 + 1/2 11(5)
117 + 55/2
144.5
Y-intercept : 12
use the rise over run method
x: 0 1
y: 12 109/9