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Allisa [31]
3 years ago
13

Simplify please.

Mathematics
2 answers:
DerKrebs [107]3 years ago
8 0

the answer is D, because the “ a “ thats alone has an invisible one in front of it, so it’ll be 1a+2a+3a+4a

ElenaW [278]3 years ago
6 0

Answer:

D

Step-by-step explanation:

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Select all the expressions that are equivalent to the polynomial below.
katrin2010 [14]
The answers are: D and C and A and E
because: 


B 3(x - 5) - 2(6x2 + 9x + 5)=<span><span><span>−<span>12<span>x^2</span></span></span>−<span>15x</span></span>−<span>25

</span></span>F (4x2 - 13x - 7) - (16x2 + 9x - 5)=<span><span>−<span>12<span>x2</span></span></span>−<span>22x</span></span>−<span>2

E </span>(-15x2 + 9x - 10) + (3x2 - 10x - 5)=<span><span>−<span>12<span>x^2</span></span></span>−x</span>−<span>15</span>
4 0
4 years ago
Read 2 more answers
Solve these simultaneous equations.<br> 4x – 7y = – 5<br> 3x – 2y = – 7<br> Solution: x=
AlexFokin [52]

Answer:

  1. \huge{x =  -  \frac{5}{4}  +  \frac{7}{4} y}
  2. \huge{x =  -  \frac{7}{3}  +  \frac{2}{3} y}

Step-by-step explanation:

1. 4x - 7y =  - 5

4x =  - 5 + 7y

\boxed{\green{x =  -  \frac{5}{4}  +  \frac{7}{4} y}}

y E R

○○•○○

2. 3x - 2y =  - 7

3x =  - 7 + 2y

\boxed{\green{x =  -  \frac{7}{3}  +  \frac{2}{3} y}}

y E R

5 0
3 years ago
What is the slope of the graph? please help ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
nignag [31]

Answer:

The slope of the graph is 3/5

Step-by-step explanation:

We know that slope is nothing but rise over run. In this equation, the spacing is 3 points different vertically and 5 horizontally. If we do Rise Over Run, we will get 3/5 as our answer.

5 0
3 years ago
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Please help me solve this.
Doss [256]

Answer:

63

Step-by-step explanation:

7 0
2 years ago
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Slove the following system of equations <br> 7x+2y=-25<br> -5x-4y=5
Bingel [31]

Answer:

x=-5

y=5

Step-by-step explanation:

Explanation is in picture (Where the lines cross is your answer)

Tip: Try using desmo calculator. Where the lines cross is your answer so all you need to do is type in your equations

6 0
3 years ago
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