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GalinKa [24]
3 years ago
9

2x+y=3 ,x + 3y = -12 ​

Mathematics
2 answers:
mel-nik [20]3 years ago
7 0
I think the answer would be 3
Alexeev081 [22]3 years ago
3 0
I believe the answer is 3 :))))
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I really don't understand this I need help
Salsk061 [2.6K]
In looking at it I would guess it is asking which of the points is on the line? To answer that you would have to take each point an plug it into the equation and see if it is true.

3x - 7 = y

A(9,20)  
3(9) - 7 = 20
27 - 7 = 20
20 = 20 True - this point is on the line

B(5,0)
3(5) - 7 = 0
15 - 7 = 0
8 = 0 False - this point is not on the line

C(3,2)
3(3) - 7 = 2
9 - 7 = 2
2 = 2  True - this point is on the line

I hope this helps
7 0
3 years ago
Nico was practicing the long jump. If he jumped 4,530 centimeters, how many meters did he jump?
lesya692 [45]
45.3 meters (100 centimeters is one meter)
3 0
3 years ago
(3n^2+13n^3+5n)-(7n+4n^3)
Fantom [35]

Answer: n*(3n+2)*(3n-1)

Step-by-step explanation:

4 0
3 years ago
A one-topping pizza costs $15.00. Each additional topping costs $1.25. Let x be the number of additional toppings. You have $20
pantera1 [17]
So,

Our total will be equal to 20.  If we want 1 additional topping, we will have an additional $1.25.  <span>If we want 2 additional toppings, we will have an additional $2.50.  So we can just multiply the number of additional toppings by 1.25 to get the additional amount.

1.25x

However, you will have already spent $15.

1.25x + 15 = 20

This is option B.

P.S. You will be able to put exactly 4 additional toppings.</span>
3 0
3 years ago
Read 2 more answers
In August, James begins school shopping for his triplet daughters. One day, he bought 10 pairs of socks for $2.50 each and 3 pai
denpristay [2]

Answer:

2.50*10  350+d

Step-by-step explanation:

  • thats the answer up below
6 0
3 years ago
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