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AfilCa [17]
3 years ago
9

. In right triangle ABC, ?A = 90° and ?C is 18° less than twice the measure of ?B. What is the measure of ?B? A) 18° B) 36° C) 5

4° D) 72°
Mathematics
2 answers:
inn [45]3 years ago
6 0

Answer: 72°


Step-by-step explanation:


ad-work [718]3 years ago
5 0

Answer:

B

Step-by-step explanation:

the sum of the 3 angles in a triangle = 180°

let the measure of B  be x, then C = 2x - 18

the sum of the 3 angles is therefore

x + 2x - 18 + 90 = 180

3x + 72 = 180 ( subtract 72 from both sides )

3x = 108 ( divide both sides by 3 )

x = 36

Hence ∠B = 36°


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Answer:16 days

Step-by-step explanation:

Given

John schedule is 4 Workdays and 5 th day off i.e. John take holiday at the 5 th day

Ling Work for 7 day and then took off on 8 th and 9 th day

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So to find out common day off we nee take LCM of

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LCM(5,8)=40 i.e. after every 40 th day they had same day off

and there are 8 such days in 365 days

LCM(5,9)=45 i.e. after every 45 day they had same day off

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