How do I do it? Acellus exam help

30

Step-by-step explanation:

triangle ABC is proportional to triangle BCD so

hypothenuse of ABC/ ajdacent of ABC = hypotrnus BCD/ ajdacent of BCD

in short

AC/BC = BC/DC

10/x = x/3

10 . 3 = x²

x² = 30

x = √30

so the question mark is 30

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

the f

last graph i believe

step-by-step explanation:

worked it out i believe