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noname [10]
3 years ago
14

Plz help asap with explanation and will get the brilliant

Mathematics
2 answers:
Elina [12.6K]3 years ago
8 0
3x + y = -3
-2x + y = 7
Use elimination method
Subtract both equations
5x = -10, x = -2
Plug in -2 for x (any equation)
3(-2) + y = -3
-6 + y = -3
y = 3

Solution: x = -2, y = 3
Or as a coordinate: (-2, 3)
Lina20 [59]3 years ago
3 0

Answer:

(-2,3)

Step-by-step explanation:

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The amount earned in dollars for recycling p pounds of copper is 2p. How much do you earn for recycling 28 pounds of copper
Licemer1 [7]

Answer:

56 dollars are earned for recycling 28 pounds of copper.

Step-by-step explanation:

Quantity of copper recycled = p pounds

Amount earned in dollars for recycling p pounds of copper = 2p

Also,

Quantity of copper recycled = 28 pounds

Therefore,

Amount earned in dollars for recycling 28 pounds of copper = 2(28)=56 dollars

So,

56 dollars are earned for recycling 28 pounds of copper.

3 0
3 years ago
Why was the music teacher not able to open his class room?
Goryan [66]

Answer:

In what book/story gotta tell us this if you want the question answered

Step-by-step explanation:

7 0
3 years ago
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Jlenok [28]

Answer:

Box 2 : ( 1,5,3,10,9)

[(5-3)×1]-(10-9)

(2*1)-1 =1

Box 3 : {1,6,2,8,7,4}

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7 0
3 years ago
Read 2 more answers
Help pls , will give brainliest!
m_a_m_a [10]
<h3>Answer:  6</h3>

=======================================

Work Shown:

1 liter = 1000 mL

3 liters = 3000 mL

I multiplied both sides by 3.

Divide that result over 500 to get 3000/500 = 6

So she'll need to buy 6 cartons.

-------

You could also solve like this:

(1 carton)/(500 mL) = (x cartons)/(3000 mL)

1/500 = x/3000

1*3000 = 500*x ... cross multiply

3000 = 500x

500x = 3000

x = 3000/500 .... dividing both sides by 500

x = 6

6 0
3 years ago
Find cos(B) in the triangle.<br><br> A. 15/17<br> B. 8/17 <br> C. 8/15<br> D. 15/8
skelet666 [1.2K]

Answer:

b

Step-by-step explanation:

7 0
3 years ago
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