# Do the Math, But with a Trick I

## Do the math I (Hint available!)

Classic
0/21
15:00

A. What is the sum of the roots of the equation:
5x3 + 10x2 - 7x + 4 = 0 ?

B. How many different ways can 7 cars finish a race in 1st, 2nd, and 3rd place?

C. What are the coordinates of the centroid of the triangle with vertices at
( -1, 2 ), ( 5, 6 ), and ( 2, 1 ) ?

D. Is the function y = 5x10 + 7x2 - 8, even, odd, neither, or both?

E. What is the average of the 5 numbers: 87, 88, 91, 91, and 95?
(Give the answer as a decimal.)

F. What is the definite integral
from zero to two of the square root of
the quantity ( 4 - x2 ) with respect to x?

G. What is the slope of the line
4x + 3y = 19 ?
(Express as an improper fraction.)

H. What is the phase shift of the wave,
y = 5sin (6x + 2) ?

I. A right triangle ABC has legs of
lengths 8 and 15 (right angle C).
When the median CD is drawn,
what is the length of BD?

J. A right triangle ABC has legs of
lengths 8 and 15 (right angle C).
When the median CD is drawn,
what is the area of Triangle ACD?

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