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damaskus [11]
3 years ago
10

I will give brainlist if you answer all these questions please! I promise I will :))

Mathematics
1 answer:
lawyer [7]3 years ago
4 0
2. C
3. C
4. C

(all answers are c)
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Explain what their first step would be if they wanted to eliminate the y variable from the equations.
Vinvika [58]

Answer:

  • r1 +4×r3 ⇒ r1
  • r2 -3×r3 ⇒ r2

Step-by-step explanation:

We note that the coefficient of y in equation (iii) is 1, so it is convenient to use that equation to eliminate y from the others.

__

<em>To eliminate the y-variable from equation (i), four times equation (iii) can be added to equation (i).</em>

<em>To eliminate the y-variable from equation (ii), three times equation (iii) can be subtracted from equation (i).</em>

_____

The result of these operations would be ...

  10x +6z = 28\quad\text{(iv)}\\\\-7x-9z=2\quad\text{(v)}

5 0
2 years ago
How do I solve this?
Tanya [424]
Y=-3x+5 hope this helps
3 0
3 years ago
Which segment is a diameter?
Marianna [84]
Both FI and GJ are diameters.
7 0
3 years ago
Which number line shows 1.5 graphed?
Mamont248 [21]

Answer:

The third one down

Step-by-step explanation:

6 0
2 years ago
What is the the value of ∣9∣
xxTIMURxx [149]

Hey there! I'm happy to help!

This symbol is an <u>absolute value</u> symbol. It means that we are looking for that number's distance from 0. There is no such thing as a negative distance; the distances are all positive, so both ∣9∣ and ∣-9∣ have a value of 9.

Have a wonderful day and keep on learning! :D

7 0
2 years ago
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