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Inessa05 [86]
3 years ago
15

Please help me ........

Mathematics
1 answer:
melamori03 [73]3 years ago
3 0
Its the first one for all three of the questions
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2a) Solve using substitution.
Tcecarenko [31]
First things first, write out your equation without the substitution.

2x+ 2y= 10

Now, put in the substitution.

2x+ 2• 2= 10

Combine like terms.

2x+ 4= 10

Now that your equation it simplified, you need to reverse the problem and put everything on the other side.

2x+ 4= 10
- 4 - 4
2x = 6

2x=6
— —
2 2

X= 3

So the final answer is x=3

8 0
2 years ago
I don't know how to do this​
Gre4nikov [31]

Answer:

x = -11/5 and y = 24/5

Step-by-step explanation:

Use elimination.

First, we need to multiply so that at least one variable can cancel out.

We can multiply the top equation by 2.

So we get

4x + 6y = 20

Then, we can use elimination.

The x's cancel out.

So we get 5y = 24

Or y = 24/5

Then, we can plug in this y value back into the first equation to find x.

2x + 3(24/5) = 10

2x + 72/5 = 50/5

2x = -22/5

x = -11/5

So x = -11/5 and y = 24/5

5 0
3 years ago
For what values of theta, °
Anna11 [10]

Answer:

Step-by-step explanation:

6 0
2 years ago
How do you calculate problems like: 1 million is 70% of what number?
trasher [3.6K]

Answer:

Hope it helps

Have a good day Ahead

3 0
3 years ago
Shannon scores 36 points on 6 questions on her test what is the unit rate for one question?
VLD [36.1K]

Answer:

Uh I think 6

Step-by-step explanation:


7 0
3 years ago
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