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Irina-Kira [14]
3 years ago
13

9 Given: p + q = 25. r + s = 25. q = r. Prove: p=s

Mathematics
1 answer:
MrRissso [65]3 years ago
5 0

This is about simultaneous equations.

<u><em>p = s has been proved below. </em></u>

  • We are given;

p + q = 25  - - - (eq 1)

r + s = 25 - - - (eq 2)

q = r - - - (eq 3)

  • Let's put r for q in eq 1 to get;

p + r = 25 - - -(eq 4)

  • Let's subtract eq 2 from eq 4;

(p + r) - (r + s) = 25 - 25

p + r - r - s = 0

p - s = 0

p = s

Read more at; brainly.com/question/15165519

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Answer:

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Step-by-step explanation:

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5x+2(x+8)=37

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2 years ago
Our new training room can seat 150 employees. If 6 tables consisting of 6 chairs are now taken, what percentage of our new facil
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Step 1

Find out how many chairs are already taken. Multiply the tables by the chairs

6*6=36

Step 2

By using proportion find the percentage

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Answer:

-125

Step-by-step explanation:

Each term is 7 less than the previous term.

1st term: 15

2nd term: 15 - 7

3rd term: 15 - 7 - 7 = 15 - 2(7)

4th term = 15 - 7 - 7 - 7 = 15 - 3(7)

Notice that each term is 15 minus a multiple of 7. The multiple is obtained by multiplying 7 by 1 less than the term number.

The formula is:

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For the 21st term, multiply 7 by 20, and subtract from 15.

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Using the formula:

a_{21} = 15 - 7(21 - 1) = 15 - 7(20) = 15 - 140 = -125

Answer: -125

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Answer:

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3 years ago
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