contestada

I need help, I have looked on examples on how to figure these problems out and found nothing helpful, please help "/

1. (9m+6) + (-5m - 6)

a) 4m+12
b) 14m+12
c) 14m - 12
d) 4m

2. (3r^2 + 7r + 1) + (4r^2 - 8r - 2)

a) 7r^2 + 15r -1
b) 7r2 - r - 1
c) 7r^2 - 15r - 3
d) -r^2 - r - 1

3. (6h + 1) - (9h + 4)

a) -3h - 3
b) 15h - 5
c) -3h + 3
d) -3h + 5

4. (m^2 - m - 4) + (m - 5)

a) m^2 - 2m + 9
b) m^2 + 2m - 9
c) m^2 - 2m - 9
d) m^2 - 9

5. (4x + 4) + (3x + 2 + 1)

a) 7x + 3
b) x + 7
c) 7x + 7
d) 8x + 6

Respuesta :

durrrachael
1. D, 9m - 5m equals 4m and 6+(-6) equals 0. When a + and a - are by each other it is a negative. 2. B, 3r^2 + 4r^2 equals 7r^2. 7r - 8r equals -r. 1 - 2 equals -1. 3. D, 6h - 9h equals -3h. 1 + 4 equals 5. 4. D, -m + m equals 0. -4 + -5 equals -9. 5. C, 4x + 3x equals 7x. 4 + 2 + 1 equals 7

Otras preguntas