Answer:
y = 0.7(x^2 - 64x - 576)
Average rate of change = -49.
Step-by-step explanation:
As the x intercepts are -8 and 72 we can write the equation
y = a(x + 8)(x - 72) where a is some constant to be found.
As it passes through point (62, -490) we have, substituting:
-490 = a(62+8)(62-72)
-490 = - 700a
a = 0.7
So the equation of the parabola
y = 0.7(x + 8)(x - 72) or
y = 0.7(x^2 - 64x - 576).
Average rate of change between x = -8 and x = 2
= [0.7(2+ 8)(2 - 72) - 0.7(-8+8)(-8-72)] / (2 - -8)
= -490 - 0 /10
= -49
I answer for what i understand, is
5 * 2 - x = 13
10 - x = 13
-x = 13 - 10
x = -3
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use pemdas
5 * 2 - (-3) =
10 + 3 = 13
the answer is good
Answer:
(2,5)
Step-by-step explanation:
The rule to 90 degrees about the origin is (x,y) to (-y,x). You basically switch the values of y and x but remember the value of y is negative. The value of y is -2 so -2 is now 2 since the rule changed the sign (-2×-y=2) and 5 isnt affected except it is the x value. Just know that since they r switched, x is now 2 and y is 5 when rotated 90 degrees about the origin.
Answer:
Step-by-step explanation
There are 12 inches in a foot.
3'3" in inches is therefore 39 inches.
39 * 4 = 156 inches in total.
6 feet in inches = 72 inches.
72 * 5 = 360 inches
There are 2 boards which are 18 inches long. In total they will be 36 inches long.
360 + 156 + 36 = 552 inches.
Which equals 46 feet.