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netineya [11]
3 years ago
6

Use elimination to solve the system

Mathematics
1 answer:
Dovator [93]3 years ago
4 0
Just divide the numbers and times them
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Answer this correct and you are a true legend 9 + 10 = ? ...
S_A_V [24]

Answer:

AcORdinG To MY CaLCulAtIoNS ItS 21

Step-by-step explanation:

Logic :)

5 0
3 years ago
Which ordered pair is a solution to the system of equations?
enot [183]

Answer:

  • See below

Step-by-step explanation:

<u>Given system:</u>

  • 2x - y = - 2
  • 15x - 2y = - 7

<u>Solve by elimination, multiply the first equation by - 2 and add up the equations:</u>

  • -2(2x - y) + 15x - 2y = - 2(- 2) - 7
  • -4x + 2y + 15x - 2y = 4 - 7
  • 11x = - 3
  • x = - 3/11

<u>Find the value of y:</u>

  • 2( - 3/11) - y = - 2
  • -6/11 - y = - 2
  • y = 2 - 6/11
  • y = 1/11

<u>Solution is:</u>

  • ( - 3/11, 1/11)
  • <em>None of the answer choices is matching this solution. Something must be wrong with the given equations.</em>
3 0
3 years ago
What is the Pythagorean Theorem used for? What is the formula
saveliy_v [14]
The Pythagorean Theorem states that a triangle's hypotenuse is equal to the square's of the other two sides of the triangle.

a² + b² = c<span>²
a = side of triangle
b = other side of triangle
c = hypotenuse (squared)

Find the square root to find the accurate length of the hypotenuse.</span>
5 0
3 years ago
Read 2 more answers
3 Parts with a picture. Thanks!
tatuchka [14]

We have $8.50 an hour gross minus $2.15 an hour tax and bennys.  Then $3.75 daily expense.  In one week our net take-away y after x hours is

y = x(8.50 - 2.15) - 5(3.75)

That's the answer, or we can simplify it to

Answer: y = 6.35 x - 18.75

Answer: The slope, 6.35, is the net dollars per hour <em>before weekly expenses.</em>

Answer: The y intercept, -18.75, is the weekly expense, negative because it's an expense.

To make $120 in a week, we solve for x where y=120

120 = 6.35x - 18.75

138.75 = 6.35 x

x = 138.75 / 6.35 = 21.8503937007874

That wasn't the nice round number I was expecting/hoping for.  I don't see a mistake so let's go with

Answer: 21.85 hours to make $120

7 0
3 years ago
Mrs. Lewis had $100 to purchase school supplies for her class. She bought 40 glue sticks and 40 boxes of crayons. Each glue stic
Bess [88]
Mr. Lewis | 100$
Glue = 1.50$ (x40)
Box = 0.89$ (x40)

1.50 x 40 = 60$
0.89 x 40 = 35,6$
Total spend (95,6$)

100 - 95,6 = 4,4$

Answer: 4,4$
8 0
3 years ago
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