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zvonat [6]
4 years ago
12

3x+y=-8 x+6y=3 Elimination Method

Mathematics
2 answers:
diamong [38]4 years ago
6 0
Answer is (-3,1) x=-3 y=1
o-na [289]4 years ago
3 0

Answer:

X=-3     y=1

Step-by-step explanation:

1)  multiply the second equation by 3 to subtract it from the second

3(x+6y)=(3)3

3x+y=-8

-

3x+18y=9

—-------------

-17y=-17

Y=1

Substitute 1 in equation 2

X+6(1)=3

X+6=3

X=-3

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I think he sold 7 cars
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4 years ago
How many milliliters of normal saline are needed to have a concentration of 0.3 mg per ML for 150 mg dose of Etoposide?
Mamont248 [21]

Answer:

500 millilitres

Step-by-step explanation:

Mass = Concentration x Volume

This rearranged gives:

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6 0
3 years ago
-3k-9=-21 zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
Dmitrij [34]

Answer:

k = 4

Step-by-step explanation:

Step 1: Write equation

-3k - 9 = -21

Step 2: Solve for <em>k</em>

  1. Add 9 to both sides: -3k = -12
  2. Divide both sides by -3: k = 4

Step 3: Check

<em>Plug in k to verify it's a solution.</em>

-3(4) - 9 = -21

-12 - 9 = -21

-21 = -21

7 0
4 years ago
Read 2 more answers
Choose a liner function for the line represented by the point-slope equation y-5=3(x-2)
Vilka [71]

Answer: is it y - 1 = 1/2(x -5) ?

Step-by-step explanation:

5 0
3 years ago
(20 POINTS!!!)
Tcecarenko [31]

Answer:

1360  inches

Step-by-step explanation:

If you follow the formula, and use these values you get 1360. BTW ARMMYYYYYYY.

7 0
3 years ago
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