A jar of nickels and dimes contains $6.75. There are 84 more nickels than dimes. How many of each are there?

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 answer is a

step-by-step explanation:

45

step-by-step explanation:

47 - 90 = 43

43 - 180 = x

x = 137