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photoshop1234 [79]
3 years ago
5

What is the solution of the system? {5x−y=−21 {x+y=−3

Mathematics
2 answers:
Mekhanik [1.2K]3 years ago
7 0
X+y=-3 answer: x=-3+-1y
love history [14]3 years ago
5 0

Answer:

(-4,1)

Step-by-step explanation:

I just took the quiz. Hope this helps!

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18x + 2x + 1=32<br> -1<br> 18x + 2x=31<br> And then what?
DerKrebs [107]
Let's look at the equation we have. 
18x + 2x = 31

The first step would be to combine like terms. Ex: 18x and 2x
18x + 2x = 31
20x = 31

Now, to isolate the x, you would divide both sides by 20. 
20x = 31
x = 1.55

x = 1.55

I hope this helps!

3 0
4 years ago
Read 2 more answers
a 2 pound box of spaghetti costs 2.50. phillip says that the unit cost is 2/2.50 equals $0.80 per pound. explain his error
In-s [12.5K]

Answer:

He did 2 divide by 2.50 instead of 2.50 divide by 2 like x and y y=kx

Step-by-step explanation:

2.50 ➗2 = 1.25 per pound

1 lbs =1.25

6 0
3 years ago
A rectangular room is three times as long as it is wide, and its perimeter is 56 meters. whats the length?
vovangra [49]
W=3/4L
P=2L=2W
70=2L+2(3/4L)
70=2L+6L/4
70=2L+1.5L
70=3.5L
L=70/3.5
L=20 FT. ANS. FOR THE LENGTH.
W=4/4*20=15 ANS. FOR THE WIDTH


i think. 
7 0
4 years ago
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Jasonhas a coupon for $2.50 off any electronic Book from an online store. If the original price in dollars of an electric book b
Andru [333]
3+2.50=P or 5.50





this doesn't matter just trying to get 20 characters
7 0
3 years ago
Each band member had 12 tickets to sell to the spring concert.
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Matt sold the most, figure out the percentages of each by diving the top number by the bottom number.
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