I really need help school is about to end and i haven't finished my grade repair !!
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Answer: The perimeter is 96 m
Step-by-step explanation:
If we tag the length of the rectangle as and the width as
, and if in addition we are told
,the dimensions of the rectangle are as shown in the figure.
Now, the area of a rectangle is given by:
Since :
Isolating :
On the other hand, the perimeter of a triangle is given by the addition of each of its sides. Then, if the rectangle has two sides that measure and two sides that measure
, the perimeter is:
Substituting the value of in the last equation:
Finally the perimeter is:
Answer:
-18
Step-by-step explanation:
f(x) = x² - 3x -10
f(-10) = (-10)² – 3(-10) – 10
f(-10) = 100 + 30 - 10
f(-10) = 120
f(-5) = (-5)² – 3(-5) – 10
f(-5) = 25 + 15 - 10
f(-5) = 30
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The <em>average rate of change</em> is the slope m of the straight line joining the two points.
m = (y₂ - y₁)/(x₂ - x₁)
m = (30 - 120)/(-5 – (-10))
m = -90/(-5+10)
m = -90/5
m = -18
