Correct answers only !
use the following information to find your course average in amdm, if homework is weighted 20%, class participation is 25%, test grades are 30%, and final exam is 25%.
 homework {90, 94, 96, 90}
 class participation {95, 99}
 test grades {87, 75, 82 ,85}
final exam grade {71}
18.5 + 24.25 + 24.675 + 17.75
a. 85
b. 88.5
c. 87
d. 89

the circle graph is not a function.

step-by-step explanation:

the graph of the circle is not a function.

because for a graph to be a function, each value of x must give one value of y

in the circle, the values of x for -2< x< 2 each give 2 values of y.

hence this is not a function.

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

hope this !

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