Answer:
y=5x-7
-3x-2y=-12
Step-by-step explanation:
-3x-2(5x-7)=-12
-3x-10x+14=-12
-13x+14=-12
-13x=-26
y=5x-7+5x2-7=10-7=3
Answer:

Step-by-step explanation:
Sides of the figure = n = 7
<h3><u>Formula for measuring the interior angles of a polygon:</u></h3>
(n - 2)×180
Where n is the number of sides in the polygon
So,
<h3><u>Measure of interior angles in the figure:</u></h3>
= (n - 2) × 180
= (7 - 2) × 180
= 5 × 180
= 900
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<span>a. y = x^2 – 81 is a quadratic function.
According to the definition:
A quadratic function is defined as a function with the maximum coefficient of 2.Only first option has a coefficient of 2 and the rest have not.</span>
The answer is 40%. Count how many right triangles there are, there are 20 right triangles. Count how many right triangles are shaded in, there are 8 right triangles that are shaded in. 8/20=0.4 or 40%