12/19 = 7/n
solve for n.
a) n = 11.08
b) n = 4.42
c) n = 84
d) n = 133

step-by-step explanation:

multiply n by both sides to get it out of the denominator.

then you have 12n/19=7.

now multiply by 19 to get it out of the denominator.

then you have 12n=19(7)

divide by 12 to get n by itself.

then you have n=19(7)/12

n=11.1

a) 11.08 to the nearest hundredth

step-by-step explanation:

12/19 = 7/n

cross multiply:

12n = 7*19

divide both sides by 12:

n = 7*19 / 12

n = 133/12

n = 11.

cheater

step-by-step explanation:

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8