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Step2247 [10]
3 years ago
5

Solve using elimination 6x + 2y = -8 3x - 2y = -19

Mathematics
1 answer:
Jobisdone [24]3 years ago
3 0

Answer:

x=-3, y=5

Step-by-step explanation:

6x + 2y = -8   3x - 2y = -19

Add the two equations together to eliminate y

6x + 2y = -8

3x - 2y = -19

------------------------

9x        = -27

Divide each side by 9

9x/9 = -27/9

x = -3

Now we find y

6x + 2y = -8

6(-3) +2y = -8

-18+2y = -8

Add 18 to each side

-18+18 +2y = -8+18

2y = 10

Divide by 2

2y/2 = 10/2

y =5

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Simplify the expression 467,000×0.0002 using scientific notation and expression your answer in scientific in notation
elixir [45]

Answer:9.34×10^1

Step-by-step explanation:

To simplify 467000×0.0002 in scientific notation

We get

467000×0.0002

=93.4

=9.34×10^1

8 0
3 years ago
How I can answer this question, NO LINKS, if you answer correctly I'll give u brainliest!
allochka39001 [22]

Answer:

y = -8/3 x - 11

Step-by-step explanation:

3 0
2 years ago
Christopher bought a new watch at the store when they were having a 20\%20%20, percent off sale. If the regular price of the wat
ioda
You're having some formatting problems.   You may have to do without the special symbols.

<span>Christopher bought a new watch at the store when they were having a 20% off sale.

</span><span>If the regular price of the watch was $48, what did Chris have to pay after the discount was applied?

Let w represent the cost of the watch.  Then the discounted price would be (1.00-0.20)($48) = 0.8($48) = $38.40   (answer)</span>
5 0
3 years ago
Im trying to figure out how to find the length of an equilateral triangle
gulaghasi [49]

All 3 sides of an equilateral triangle are the same.

Set up an equation with two sides equaling each other and solve for n:

2n +15/4 = 7n

Subtract 2n from both sides:

15/4 = 5n

Divide both sides by 5:

n = (15/4) / 5

n = 3/4

Now you have a value for n, replace n and solve for the length:

7n = 7(3/4) = 21/4 = 5 1/4

Each side is 5 1/4

7 0
4 years ago
What is the greatest common factor of 8 and 20?
Tamiku [17]
You need to find the biggest number that is a factor of both 8 and 20. Factor's are whole numbers that can be multiplied by other whole numbers to get that number.

Factors of 8

1, 2, 4, 8

Factors of 20

1, 2, 4, 5, 10, 20

The greatest common factor is 4
7 0
4 years ago
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