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Ira Lisetskai [31]
2 years ago
12

A test has 20 question and is worth 100 points. The test consists of true or false questions worth 3 points each and multiple ch

oice questions worth 11 points each. How many multiple choice questions are on the test?
Mathematics
2 answers:
Blizzard [7]2 years ago
8 0
10 or 15 that is what I think
SVETLANKA909090 [29]2 years ago
3 0
X=number of true or false
y=number of multiplule choice

total questions is 20
x+y=20

total poits is 100
3x+11y=100

eliminate x's

multiply first equaiton by -3 and add to 2nd

-3x-3y=-60
<u>3x+11y=100 +</u>
0x+8y=40

8y=40
divide both sides by 8
y=5

5 multipule choice questions
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Given: m∠V=103°, m∠VRT=71°, RS ∥ VU Find: m∠TRS, m∠U
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Answer:

m∠U = 103° and m∠TRS = 6°

Step-by-step explanation:

In the given circle O,

Since, RS║VU, and VR is a transverse,

Therefor, m∠V + m∠R = 180° [Consecutive interior angles]

m∠R + 103° = 180° [m∠R = 103° given]

m∠R = 180° - 103°

m∠R = 77°

Since m∠R = m∠VRT + m∠TRS

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Therefore, m∠U + m∠R = 180°

m∠U + 77° = 180°

m∠U = 180° - 77° = 103°

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