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lidiya [134]
3 years ago
13

What is the result of subtracting the second equation from the first? -2x+y=0 - 7x + 3y = 2

Mathematics
1 answer:
artcher [175]3 years ago
6 0

Answer:

5x - 2y = - 2

Step-by-step explanation:

Given the 2 equations

- 2x + y = 0 → (1)

- 7x + 3y = 2 → (2)

Subtracting (2) from (1) term by term

- 2x - (- 7x) + y - 3y = 0 - 2, that is

- 2x + 7x - 2y = - 2

5x - 2y = - 2

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Answer:

88 adult tickets were sold

Step-by-step explanation:

3s + 7a = 1102

(s + a = 250)-3

   3s + 7a = 1102

+ -3s - 3a = -750      Add these equations together

4a = 352                  Divide both sides by 4

a = 88

Now plug this into the second equation

s + a = 250

s + 88 = 250

  - 88     - 88        Subtract 88 from both sides

s = 162

If this answer is correct, please make me Brainliest!

7 0
3 years ago
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4 0
3 years ago
The specifications for manufacturing a steel rod stipulate that the length must be 8.225 ± 0.125 inches. The Minimum allowable l
zmey [24]

Answer:

Minimum - 8.1 inches

Maximum - 8.35 inches

Step-by-step explanation:

The specifications for manufacturing a steel rod stipulate that the length must be 8.225 ± 0.125 inches.

This means that the minimum length must not be 0.125 inches less than 8.225 inches and the maximum length must not be 0.125 inches greater than 8.225 inches.

The minimum length is therefore:

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The maximum length is therefore:

8.225 + 0.125 = 8.35 inches

6 0
3 years ago
I'm kinda stuck. Can anyone help?
BARSIC [14]

Answer:

C) 147 ft²

Step-by-step explanation:

Bottom rectangle:

A = bh

A = 14(7)

A = 98

Top rectangle:

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A = 7(7)

A = 49

Combined:

98 + 49

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3 years ago
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