$4x^2+32x-28=0\ \ \ |:4\\\\x^2+8x-7=0\ \ \ |+7\\\\x^2+8x=7\\\\x^2+2x\cdot4=7\ \ \ |+4^2\\\\x^2+2x\cdot4+4^2=7+4^2\\\\(x+4)^2=7+16\\\\(x+4)^2=23\\\\Answer:\ B.(x+4)^2=23$

4 0

3 years ago

5.31x + 6.65 = 9.28 Explain please:)

Lisa [10]

Answer:

5.31x=9.28-6.65

5.31x=2.63

×=2.63/5.31

x=2.63

5.31

5 0

3 years ago

The area of the base of a rectangular juice box is 4 1/2 sq.in. If the volume of the box is 18 cubic inches, how tall is the box

Ksju [112]

Volume = Area x Height. We are given Volume and Area, so plug in and solve for Height (Height = Volume/Area)

18in^3 = 4.5 in^2 x Height (divide both sides by 4.5) -> 4in = Height

6 0

4 years ago