Add (4x^2+x-9) and (3x^2+x+4)

7x^2 + 2x - 5

Step-by-step explanation:

(4x^2 + x - 9) + (3x^2 + x + 4)

7x^2 + 2x - 5

Pretty simple, just add 4 and 3, then x (or 1) and x, lastly -9 and 4. Then you get your final equation.

0.85 or 85%

step-by-step explanation:

1) divide 23 by 27

2) round the decimal to the nearest 10

3) so your answer would be 0.85 or 85%