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Korolek [52]
3 years ago
10

2x+y=10 Y=5x-11 Solve the system of equations by substitution

Mathematics
2 answers:
antoniya [11.8K]3 years ago
8 0
The answer would be (3,4)
Zina [86]3 years ago
7 0
2x+5x-11=10!
So once you combine like terms - 2x+5x, you end up with 7x-11=10
You then have to add 11 to both sides of the equal sign and you get 7x=21. If you divide both sides by 7, you end up with x=3.
Did you need what Y was, too ? If so, you just go back to the original problem:
2(3)+y=10
2 times 3 = 6+y=10.
Subtract 6 from both sides and you get Y=4!
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zavuch27 [327]
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3 0
3 years ago
Rearrange to make x the subject of 4(x-3)/a=y
IrinaVladis [17]

Answer: x = a*y + 3

Step-by-step explanation:

To make x the subject of the equation, first, we open the bracket

4x - 12/a = y

Then cross multiply:

4x - 12 = a * y ( a*y means the product of the two variables)

Add 12 to both sides of the equation

4x = a*y + 12

Divide both sides by 4 to get the value of x

x = a * y + 12/4

x = a*y + 3

I hope this helps.

4 0
3 years ago
What is the 10th term of the following geometric sequence?
Tom [10]
The answer is B if not sorry
5 0
3 years ago
in a box of chocolates, 1/5 of the chocolates contain nuts. the rest of the chocolates do not contain nuts. write down the ratio
valina [46]

Answer:

The ratio of the number of chocolates that contain nuts to the number of chocolates = 1:4

Step-by-step explanation:

The parameters given are;

Proportion of the box of chocolates that contain nuts = 1/5

Proportion of the box of chocolates that do not contain nuts = 1 - 1/5 = 4/5

Therefore, we have in a box of chocolates with five chocolates;

The number of chocolates that contain nuts = 1

The number of chocolates that do not contain nuts = 4

Which gives the ratio of the number of chocolates that contain nuts to the number of chocolates as 1:4.

4 0
3 years ago
Which expression has a negative value?<br> 2+12<br> (-3)(-8)<br> 10-(-18)<br> -35-5
12345 [234]

Answer:

-35-5

Step-by-step explanation:

-35-5=-40

which is negative

plz mark my answer as the brainliest

7 0
3 years ago
Read 2 more answers
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