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serg [7]
3 years ago
14

What is the value of the x variable in the solution to the following system of equations?

Mathematics
1 answer:
satela [25.4K]3 years ago
4 0
Let's use the addition/subtraction method.

Suppose we wish to eliminate variable x.

Mult the first eqn by 5:  10x - 15y = 15
Mult the 2nd eqn by -2: -10x+ 4y  = -8

Add these two equations together:  -11y = 7, and y = -7/11.

Subst. -7/11 for y in either given equation and find x.

Then your solution is (x,y)   (subst. the values we've found for x and y).

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Y=8x+3 helppp I need help
Lana71 [14]

Answer:

11 maybe

Step-by-step explanation:

multiply 8 by the x (which is one) and then add 3

5 0
3 years ago
Grandma has just finished baking a large rectangular pan of brownies. She is planning to make rectangular pieces of equal size a
Nikitich [7]

Answer: 60

Step-by-step explanation:

Let the side lengths of the rectangular pan be m and n. It follows that (m-2)  (n-2)= mn/2

So, since haf of the brownie pieces are in the interior. This gives 2 (m-2) (n-2) =mn

mn- 2m - 2n- 4 = 0

Then Adding 8 to both sides and applying, we obtain (m-2) (n-2) =8

Since now, m and n are both positive, we obtain (m,n) = (5,12), (6,8) (up to ordering). By inspection, 5. 12 = 60

which maximizes the number of brownies in total which is the greatest number.

Hope that helped! =)

7 0
3 years ago
A number more than 1.
Stells [14]

Answer:

a number more than 1 is 2 or 3 or literally anything bigger

3 0
3 years ago
Read 2 more answers
Find the distance between the two points<br><br>(−12, 8) and (−3, 8)
Dimas [21]

Answer:

9

Step-by-step explanation:

Plug into Distance formula --> √(-3 - (-12))^2 + (8 - 8)^2

---> 9

3 0
2 years ago
A comic book collector buys a comic book for $120 and sells it for $250. Find the percent change. type your answer...​
ankoles [38]
I’m not sure but I think the answer is 48% because 120 divided 250 is 48%
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