How could you use cross products to check the solution to this proportion? 12
30
=
5
x
30(5) = (12)(x)
150 = 12x
12.5 = x

is there a picture

step-by-step explanation:

a = 11 : 4

b = 38

c = 1 for every 6

b. f(x) = –√x + 3this is the correct answer

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus