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Rainbow [258]
3 years ago
8

What is the value for y? Enter your answer in the box. y=

Mathematics
1 answer:
katen-ka-za [31]3 years ago
8 0

Answer:

y=14

Step-by-step explanation:

  1. the triangle is equilateral triangle
  2. angle A = angle B
  3. so we immediately got the answer for x.. x=25
  4. so 180°-100°=80°
  5. 5y+10°=80°
  6. 5y=80°-10°
  7. 5y=70°
  8. y=70°/5
  9. y=14
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Two thirds of a number reduced by 11 is equal to 4 more than the number find the number
Andrew [12]
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3 years ago
Complete the following proof by dragging and dropping the correct reason in the spaces bellow
almond37 [142]

Given:

Q is between P and R, R is between Q and S, PR=QS.

To prove:

PQ=RS

Solution:

The two column proof is:

Statements                                             Reasons

1. Q is between P and R                         1. Given

2. PQ+QR=PR                                  2. Segment addition postulate

3. R is between Q and S                        3. Given

4. QR+RS=QS                                   4. Segment addition postulate

5. PR=QS                                            5. Given

6. PQ+QR=QR+RS                        6. Substituting property of equality

7. PQ+QR-QR=QR+RS-QR    7. Subtraction property of equality

8. PQ=RS                                            8. Simplify

Hence proved.

6 0
3 years ago
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