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monitta
3 years ago
10

How to get y by itself in the equation x+2y=10

Mathematics
1 answer:
Nataly_w [17]3 years ago
4 0

Answer:

The value of y by itself in the equation x+2y=10 is

y=\frac{10-x}{2}

Step-by-step explanation:

Given equation is x+2y=10  -------- (1)

To find y with given equation as below :

Equation (1) implies that x+2y=10

Subtracting the above equation by x we get

x+2y-x=10-x

x-x+2y=10-x

2y=10-x

Dividing by 2 on both sides we get

\frac{2y}{2}=\frac{10-x}{2}

y=\frac{10-x}{2}

Therefore the value of y is \frac{10-x}{2}

Therefore the value of y by itself in the equation x+2y=10 is

y=\frac{10-x}{2}

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Can someone help me
Alex_Xolod [135]

Answer:

Su=10

Explaination:

So from s to u on the nunebr line is worth 2x-12. So what is s to u worth? Well. S to t on the number line = x-7. T to u =6. And 2 x is worth 12 more than s to u, using th e expression. X has to be at least 8 because otherwise the x-7 wouldn't work, and u might get s to u = 0 or a negative number.

Say x was 13, then 13 - 7 =6. So S to t =6. And r to u =6. So s to u =12. (6+6). Then check if the expression fits this answer of 12. 2x - 12. 2x = 26. 26-12=14, which doesn't match.

Let's try 14. 14-7=7. Then s to u = 7+6=13. The expression: 2x= 28. 28-12=16. 13 and 16 dont match. So we have got further away from what we need. Why don't we try going in the opposite direction. Rather than testing 13 and +1, let's now - 1 and try 12.

If x=12, then s to t =12-7=5. And s to u =6+5=11. The expression: 2x=24.-12=12. We are very close now with 11 and 12.

Lets test x=11!

S to t = 11-7=4. 4+6=10. So s to u =10.

2x=22. 22-12=10. So the expression works and the number line measurements.

The answer is su=10 and x=11.

3 0
3 years ago
P=-30h+74 The variable h represents the number of hours he has spent reading, the variable p represents the number of pages left
olchik [2.2K]

Answer: Ethan will have to spend 2 hours reading if 14 pages are left to read

Step-by-step explanation:

Given the equation

P=-30h+74

where p =number of pages left to read and

h= the number of hours he has spent reading

Therefore , if Ethan has 14 pages left to read, then the number of hours Ethan will have to read will be

P=-30h+74

14= -30h + 74

30h= 74-14

30h= 60

h = 60/30

h =2 hours

Ethan will have to spend 2 hours reading if 14 pages are left to read

6 0
3 years ago
Please help me<br><br>I will give you 20 points ​
otez555 [7]
Your dividing number for both is by 8. Since 8 hours divided by 8 equals 1. You will do the same to the top and get an answer of 25 miles!!
7 0
2 years ago
4a-3b=21 true or false
Katarina [22]
True, 
4a - 3b
4(6) - 3(1)
24  - 3  =  21
7 0
3 years ago
M=3 and the y-intercept is (0,2)
andreev551 [17]
If you are asking for the formula thing, it is

y=3x+2
3 0
3 years ago
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