What is the sum of 4x² + 2x - 5 and 722 -- 5x + 2?
1122 - 32 - 3
1122 - 32 + 3
1122 + 30 - 3
1102 + 3x +3
I would be guessing

Sum of 4x² + 2x – 5 and 7x² – 5x + 2 is 11x² – 3x – 3.

Solution:

Given expression:

4x² + 2x – 5 and 7x² – 5x + 2

To find the sum of these expressions.

Sum of 4x² + 2x – 5 and 7x² – 5x + 2

                    = (4x² + 2x – 5) + (7x² – 5x + 2)

                    = 4x² + 2x – 5 + 7x² – 5x + 2

Arrange the terms with same power together.

                    = 4x² + 7x² + 2x – 5x – 5 + 2

                    = 11x² – 3x – 3

Sum of 4x² + 2x – 5 and 7x² – 5x + 2 is 11x² – 3x – 3.

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

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.