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3 years ago

????????????????????

Mathematics

2 answers:

Evgen [1.6K]3 years ago

5 0

Answer:

180 - y

Step-by-step explanation:

The exterior angle is equal to 180 minus the interior angle.

Yanka [14]3 years ago

4 0

Answer:

The total angle a triangle have is 180

so now subtract it by 50

180-50 = 130

and the other angle we get is by subtracting 180-92 which is 88

y=88 degree

now x=180-(88+50)

=42

so x=42

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Answer:

The pipe A will fill the pool in 2.25 hours and the pipe B will fill the pool in 1.75 hours.

Step-by-step explanation:

Pipe A alone can fill the pool in 4 hours.

So, in 1 hour it fills $\frac{1}{4}$ part of the pool.

and in 30 minutea it fills $\frac{1}{8}$ part of the pool.

If the pipe B is opened after 30 minutes the pipe A opened.

So, $(1-\frac{1}{8} ) =\frac{7}{8}$ part of the pool is filled by both the pipe.

Again, pipe B alone fills the pool in 4 hours.

Hence, if both the pipes are open then they will fill in one hour $(\frac{1}{4} +\frac{1}{4}) =\frac{1}{2}$ part of the pool.

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