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Ratling [72]
3 years ago
11

Evaluate this expression: 3x + 9x -5

Mathematics
1 answer:
Margarita [4]3 years ago
5 0

Answer:

12x - 5

Step-by-step explanation:

3x + 9x - 5 can be easily simplified by combining like terms.

3x and 9x are like terms because they both contain the same variable and the same exponent (understood to be 1).

Therefore, because an addition sign separates the two terms, it is expected of you to add the two together. To do this, just add the terms together as you would any other terms.

3x + 9x = 12x

Because the 5 is the only constant in the equation, it cannot be combined with anything else.

The simplified expression is 12x - 5.

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Given f(x) = -x – 5, solve for a when f(x) = 4.
Gnoma [55]

Answer:

1

Step-by-step explanation:

plug 4 into x making -4-5 then solve it and it comes out as 1

6 0
3 years ago
The expression 2y+3y2−5y+y2simplifies to 4y2−3y <br> true or false
Mumz [18]

Answer:

False?

Step-by-step explanation:

I'm pretty sure it's false because wouldn't it simplify to 5y? Sorry if I'm wrong. :)

8 0
3 years ago
Four times -3+ two times negative5 exponent 3
Makovka662 [10]

-262



Hope it helps ❤️




7 0
3 years ago
Read 2 more answers
What is the mean absolute deviation of the data set 12, 9, 5, 12, 8, 3, 3,12
Liono4ka [1.6K]
The correct answer is 3.25
8 0
3 years ago
Given that 3 * 6 = 12 and 2 * 5 = 9, then a * b may be defined as
Anton [14]

Answer:

3 *6=12

3+6=9

9+3=12

2*5=2+5=7

7+2=9

a*b=a+b+a

5 0
2 years ago
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