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nadya68 [22]
3 years ago
10

Solve the system by elimination please help me

Mathematics
1 answer:
castortr0y [4]3 years ago
4 0

Answer:

x = 3 and y = 7

Step-by-step explanation:

  2x + y = 13

<u>+    x - y = -4</u>      (adding both equations)

 3x - 0y = 9

        3x = 9

          x = 9/3

          x = 3

now substituting

x - y = -4

3 - y = -4

  - y = -4 - 3

  - y = -7

    y = 7     (the negative sign on both sides get canceled)

Therefore,

x = 3 and y = 7

Happy to help :)

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in three plays of a football game, there is a gain of 4 yards, a loss of 9 yards, and a gain of 15 yards. What number can you us
Aloiza [94]

We can use minus(-) sign i.e. -9 to represent loss of 9 yards.

<h3>Write the difference between gain and loss.</h3>

The word “gain” implies “acquiring something”.

Gain means to acquire something one desires especially because of one’s efforts.

Gain means to get something additional, for example, to gain more speed, to gain more weight.

We can denote gain by using plus(+) sign before the given number.

“Loss” generally means “to lose something one already has.”

Loss means the deprivation from keeping something, for example, bearing the loss of a theft.

It refers to something which is lost, for example, the theft of jewelry was a great loss.

We can denote loss by using minus(-) sign before the number.

In the given question it is said that there is gain of 4 yards, loss of 9 yards and gain of 15 yards.

It is asked that how would we represent 9 yards loss.

We know that we use minus(-) sign to represent loss.

So we can represent loss of 9 yards by writing it as -9.

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5 0
1 year ago
What is the simplified expression for 5ab+9ab-ab?
Serggg [28]
The simplified expression should be
ab(5+9-1)
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8 0
3 years ago
Isabelle is planning a road trip to her friend's house. She looks at a map that has a scale of 1/2 in. to 25 mi. The road distan
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3 years ago
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An isosceles triangle has an angle that measures 92° which other angles could be in that isosceles triangle choose all that appl
nignag [31]

Answer:

44

Step-by-step explanation:

The two base angles cannot both be 92 degrees because they would add up to 184 which is more degrees than any triangle has. The apex angle (the top angle) therefore has 92 degrees.

The base angles are equal and found as follows.

2*b + 92 = 180                 Subtract 92 from both sides

2b +92-92 = 180-92

2b = 88                           divide by 2

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6 0
3 years ago
Quizizz thx 10 pts each brainiest guaranteed with pic
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Answer:

option B

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hope it helps

7 0
3 years ago
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