We're told x=-5 and y=11 and asked to evaluate a few expressions. That just means substitute these values into the expressions and compute the exact numerical answer.
Answer: 94
x to the power of 3
Answer: -125
•6y to the power of 2
Probably means
Answer: 726
Answer: 35
•(y-x) to the power of 2
Answer: 256
42 is the LCD of all the above fractions.
Answer:
One solution
Step-by-step explanation:
They have isolated y for you in both equations so you can plug either one into the other.
y = 3x - 1
2x + 7 = 3x - 1
isolate the x
7 = x - 1
x = 8
Go back to the original and plug 8 into x to get y.
y = 2 (8) + 7
y = 16 + 7
y = 23
This means at (8, 23) y = 2x+7 is equal to y = 3x-1. In other words they share a point at (8, 23). This is the only solution because for any other x and y they'd not be equal.
Answer:
Step-by-step explanation:
Area = (3√3 s2)/
A≈259.81
When using the formula that lets you solve for the area of a traingle, you use
area = 1/2 base + height
which led me to solve and get 32.13
