There are 15 girls and 12 boys in Ms. Grady's 6th period class. Ms. Grady will randomly choose one student to solve a problem on the board. What
is the probability Ms. Grady will choose a girl to work out the problem on
the board? *
4/5
5/9
4/9
2/3

5/9

Step-by-step explanation:

Step 1:

15 + 12

Step 2:

27

Step 3:

15/27

Step 4:

15/27 = 5/9

5/9

Hope This Helps :)

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.

c 1 hour

step-by-step explanation:

m = 2e

m = 2 so 2 = 2e

1 = e