Solve the simultaneous equations by substitution
5x+6y=−11
5x=2y−3

Answers

Answer 1

Answer:

The required solution of the simultaneous equation is x = -1 and y = -1.

Given that,
To solve the given simultaneous equation,
5x+6y= −11
5x = 2y −3

What are simultaneous linear equations?

Simultaneous linear equations are two- or three-variable linear equations that can be solved together to arrive at a common solution.

here,
5x = 2y −3 - - - - - (1)
5x+6y= −11
By substitution, from equation 1
2y - 3 + 6y = -11
8y = -8
y = -1
Now,
5x = -2 - 3
x = -1

Thus, The required solution of the simultaneous equation is x = -1 and y = -1.

Learn more about simultaneous equations here:

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Answer 2

Answer:

Answer:

y= -1, x= -1

5x+6y=-11

-(5x-2y=-3)

8y=-8

y=-8/8

y= -1

5x+6(-1)=-11

5x-6 = -11

5x=-11+6

5x=-5

x=-5/5

x=-1

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HELP GIVING BRAINLIEST Carlene is selling T-shirts for a fundraiser. The T-shirts cost $20.50 each. To date, she has raised $900. Her goal is to raise more than $9,100. How many more T-shirts, x, does Carlene need to sell to reach her goal?Select the number line that includes the fewest number of T-shirts Carlene can sell and still meet her goal.

Answers

FYI:

Sorry, I can't answer your second question because I can't see any number-lines in your question. But yes, I can answer the first one.

Answer:

400 T-Shirts

Step-by-step explanation:

If each T-Shirt is $20.50, that means that Carlene has to sell lots of them in order to earn the amount of money she wants. So, to find how many T-Shirts she needs to sell in order to get $9,100, we have first remove $900 dollars from the $9,100, because she ALREADY earned it!

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Now we have to divide $8,200 by $20.50. like this...

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Now, that's our answer. 400.