Simplify (7x2 - 2x + 9) + (3x2 + 15x - 4)

Step-by-step explanation:

7x^2 + 3x^2 = 10x^2

-2x + 15x = 13x

9 - 4 = 5

Put these together. Don't do any more than putting them together in a string.

10x^2 + 13x + 5

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

1. x> -5

2. x< 8

step-by-step explanation:

1. 2x> -10

divide by 2 from both sides of equation.

2x/2> -10/2

simplify, to find the answer.

-10/2=-5

x> -5 is the correct answer.

2. 3x< 24

divide by 3 from both sides of equation.

3x/3< 24/3

simplify, to find the answer.

24/3=8

x< 8 is the correct answer.

i hope this you, and have a wonderful day!