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Naily [24]
3 years ago
10

Solve 5n+7=7(n+l)-2n ​

Mathematics
1 answer:
notsponge [240]3 years ago
7 0

Answer: The answer is 1 =n and my work is in the bottom and hope this help :)

Step-by-step explanation:

5n+7=7(n+l)-2n distributive property

5n+7=7n+7-2n  Combines Like Term

5n+7= 12n  subtract 5n to both side

-5n      -5n

    7 = 7n   divide 7n to both side

     7    7

        1=n

     

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Y=2x-1<br><br> y=-3x+14<br><br> Solve for y
LUCKY_DIMON [66]
Y=2x-1
y=-3x+14

First you would substitue one of the y's for the other so
2x-1=-3x+14

no you would solve for x...
add one on both sides
2x=-3x+15

now add 3x to both sides which becomes
5x=15

divide 5 on both sides which gives you x=3

now to solve for y plug into any one of the equations(doesn't matter which one) from before 3 for x and solve
y=2(3)-1
y=6-1
y=5

And that is you answer y=5
3 0
3 years ago
Can you please help with both? :)​
QveST [7]

Answer: 1. 12 2. 120

Step-by-step explanation:

1. so basically 9/6=18/x

since they are similir the'd have the same ratio

sooo you just solve for x (multiply 6 by 18, and then divide by 9) and you get 12

2. same thing except you put 6/10=12/x, and solve it (multiply 10 by 12 and divide by 6) and u get 20

dats how i would do it but there are other ways too im sure :)

hope this helps

8 0
3 years ago
The answer is not A or B
Nat2105 [25]

Answer:

C) 4

Step-by-step explanation:

Arcs on one side of the diameter adds upto 180°.

Therefore,

(2 + 17x) \degree + 54 \degree + 56 \degree = 180 \degree \\  \\ (2 + 17x) \degree + 110 \degree  = 180 \degree \\  \\ (2+ 17x) \degree = 180 \degree  - 110 \degree\\  \\  (2 + 17x) \degree = 70 \degree  \\  \\ 2 + 17x = 70 \\ 17x = 70 - 2 \\  \\ x =  \frac{68}{17}  \\  \\ x = 4

4 0
3 years ago
Read 2 more answers
Anyone who knows this mathematic question will get the brainliest
spayn [35]
The third one is 510 not show in the pic here

7 0
3 years ago
Solve for x <br> Pls help I need this for study guide
frosja888 [35]

Answer:

your study guide can be stuck up you know where :3

4 0
3 years ago
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