Please help me with both problems thank you so much!!

Mathematics

2 answers:

motikmotik2 years ago

6 0

The one on the left is -5/6
The one on the right is 1/21

ohaa [14]2 years ago

5 0

E. -5/6
F. 1/21
That’s the answer

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In the figure below, ABC is a right triangle. a + b = 150 degrees, and c + d = 35 degrees. Find x.

kakasveta [241]

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3 years ago

Ruben bought 6 new books for his collection. This increased his collection by 12%. How many books did he have before his purchas

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Answer: The required number of books that Ruben had before purchases is 50.

Step-by-step explanation: Given that Ruben bought 6 new books for his collection that increased his collection by 12%.

We are to find the number of books that Ruben had before purchases.

Let x denotes the number of books that Ruben had before purchases.

Then, according to the given information, we have

$x+6=x+12\%\times x\\\\\\\Rightarrow 6=\dfrac{12}{100}x\\\\\\\Rightarrow 6=\dfrac{3x}{25}\\\\\\\Rightarrow 3x=150\\\\\Rightarrow x=\dfrac{150}{3}\\\\\Rightarrow x=50.$

Thus, the required number of books that Ruben had before purchases is 50.

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