there are 400 seniors graduating, 80 were in band while in high school and 190 were in chorus. Only 30 of the seniors who were in band and were not in chorus. Find the probability that a senior chosen at random was in the band or in chorus.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

ur mom

step-by-step explanation:

answer: translate the circles so they share a common center point and dilate circle y by a scale factor of 3.