Solve each equation by factoring. Show all work. 1. m^2+18=-9m

Solve each equation by taking square roots. Leave answers in simplified radical form.

2. x^2-2=79

3. 5v^2-5=132

Solve each equation with the quadratic formula. Leave answers in simplified radical form.

4. 5a^2+8a-21=0

5. 3x^2=24+2x

do it yourself

Step-by-step explanation:

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you