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prohojiy [21]
2 years ago
13

[-x - 2y = 7 [3x + y = 6

Mathematics
1 answer:
ZanzabumX [31]2 years ago
8 0

Answer:

multipling \: eq \: by \: 3 \\ then \: we \: get \:  - 3x - 6y = 21 \\ now \: add \: both \: eq \\   - 5y = 27 \\ y =  - 5.4

Step-by-step explanation:

plz.......

mark it as a brilliant answer

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Probability question. Please answer with work attached.
Helga [31]

Step-by-step Answer:

There is a total of 10 coins, 5 dimes, 2 quarters and three pennies.

By picking a coin, it could be any that shows up out of the 10, so the probability of picking any coin in particular is 1 / 10.

If there are 5 dimes, the probability of picking ANY one particular dime is 1/10, so with 5, the probability of picking ANY of the five dimes is 5/10 = 1/2.

Going along the same line of thought, the probability of picking any of quarters and pennies would be 2/10+3/10 = 5/10 = 1/2 as well.

3 0
3 years ago
Please answer today, I will give brainly crown when I can :)
alina1380 [7]

Answer:

Sylvia will be 17 years old.

Step-by-step explanation:

7 0
1 year ago
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Suppose when solving a system of linear equations in two variables, both variables happen to cancel, leaving you with a false st
miss Akunina [59]

Step-by-step explanation:

C. The system of equations is unsolvabl

3 0
3 years ago
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What is 6×9÷18+100-11+4
mojhsa [17]

6 × 9 ÷ 18 + 100 - 11 + 4

Use the order of operations to simplify:

  • Parentheses
  • Exponents
  • Multiplication
  • Division
  • Addition
  • Subtraction

6 × 9 ÷ 18 + 100 - 11 + 4

There are no parentheses or exponents, so multiplication comes first. Multiply 6 and 9.

54 ÷ 18 + 100 - 11 + 4

Next is division. Divide 54 by 18.

3 + 100 - 11 + 4

Finally, add and subtract from left to right.

103 - 11 + 4

92 + 4

96

<h3>Answer:</h3>

96

4 0
2 years ago
Deborah has two paintings in her portfolio and paints three more each week.Kai has twelve paintings in her portfolio and paints
elena-14-01-66 [18.8K]
Well, we can set up these equations like this-
Deborah- 2+3w
Kai- 12+2w
w=number of weeks that pass
Now, we set them equal to each other:
2+3w=12+2w

Solve for w
2-12=2w-3w
-10 = -1w
w = 10
10 weeks. Hope this helped!
4 0
3 years ago
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