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olganol [36]
2 years ago
15

Solve each system of equations by adding.

Mathematics
1 answer:
Archy [21]2 years ago
8 0

Answer:

3.  x+y = -1

    x-y = 7

(x+x+y-y) 2x=6

x=3

4. 2x+2y = -2

   3x-2y = 12

(2x+3x+2y-2y) 5x=-2+12

5x=10

x= 2

5. 6x+5y = 4

  -6x+7y = 20

(6x-6x+5y+7y)= 4+20

12y=24

y=2

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Answer:

x+y=-2

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Step-by-step explanation:

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Twenty seven less than eight times a number is equal to five. What is the number?
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<h3><u>The unknown number is equal to 4.</u></h3>

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6 0
3 years ago
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In baseball, a player pitches a ball from the mound to a catcher behind the plate. A pitch that passes over the plate above the
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To solve this question, you just need to count all the probability of the options.

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The probability that a pitch over the plate is a ball is 5:10. So, P(B | C) = 0.5.

7 0
3 years ago
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I think it's B but idk
Sergeu [11.5K]
You are correct. The answer is B.) They are congruent because they are corresponding angles.

Nice job! Hope this helped :)
4 0
3 years ago
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