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olga nikolaevna [1]
3 years ago
7

7n+2=4n+17 what is the answer

Mathematics
2 answers:
kumpel [21]3 years ago
5 0

Answer

n=5

Step-by-step explanation:

n is equal to five

Marat540 [252]3 years ago
3 0

Answer:

Hi

Step-by-step explanation:

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A man is 13 times as old as his son is. In 10 years he will be 3 times as old as his son is now. How old are they now?
valkas [14]

Answer:

the son is 2

man is 26

+10 yrs

son=12

man=36

Step-by-step explanation:

Let the son's age be x.

Then the father's age is 13x.

In ten years their ages will be (x+10) and (13x+10).

(13x+10)=3(x+10)

13x+10=3x+30

10x=20

x=2

The son is 2 years old.

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3 years ago
What it the value of m when (2m+8)° and the other angle 24°​
alisha [4.7K]

Answer:

m = 74

Step-by-step explanation:

2m+8 +24 has to = 180 because they form a line. So the equation would be 2m+32 = 180, so then 2m would equal 148, so m = 74.

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3 years ago
Which ordered pair is a solution of the equation? y=-2x-5y
Allushta [10]

Answer:

if y = 5 than 2x - 5 = 5 we can simplify this too 2x = 10 ( by adding the 5 to both sides ) now we can simplify and get x = 5 ( by dividing by 2 ) so we get (5,5) as our first point. well since its in slope intercept form ( y = mx + b ) we can graph it.

Step-by-step explanation:

5 0
3 years ago
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After m months, the length of a fingernail is 10+3m millimeters. How long is the fingernail after eight months? 36 month?
Thepotemich [5.8K]

Answer: 334

Step-by-step explanation:

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3 years ago
Find the solution to the system of equations,x+3y and 2x+4y=8
Sati [7]

Answer:

x = -7/3y + 8/3

y = -3/7x + 8/7

Step-by-step explanation:

First, set the equations next to each other to find x and y, I'll start with x:

x + 3y + 2x + 4y = 8

Combine like terms

3x + 7y = 8

Subtract both sides by 7y

3x + 7y - 7y = 8 - 7y

3x = 8 - 7y

I'll re-order the equation to make it easier to divide

3x = -7y + 8

Divide both sides by 3

3x / 3 = -7y + 8 /3

x = -7/3y + 8/3

If you need decimals just divide with a calculator

Now to find y:

We already combined like terms so we don't need to do that again...

3x + 7y = 8

Subtract both sides by 3x

3x - 3x + 7y = 8 - 3x

7y = 8 - 3x

I'll reorder the equation once again so the variable comes first

7y = -3x + 8

Divide both sides by 7

7y / 7 = -3x + 8 / 7

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Again, use a calculator to divide completely for decimals.

6 0
3 years ago
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