Mr Cameron places the names of his students in a hat order to randomly call on students. There are 12 girls and 10 boys in the class what is the probability that a boy will be called on?

A. 1/22
B. 5/11
C. 1/10
D. 5/6

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1

answer:

step-by-step explanation:

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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