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inessss [21]
3 years ago
7

Two angels in a triangle add up two 115 degrees what is the size of the third angle

Mathematics
1 answer:
Bogdan [553]3 years ago
5 0
The internal angles in a triangle add up to 180
I think the question should say
'2 angles in a triangle add up to 115 degrees'
so therefor
x+y+z=180
2 angles are x+y
115+z=180
z=3rd angle

solve
115+z=180
subtract 115 from boths ides
z=65

answer is third angle=65 degrees
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3 years ago
If Kamila can do a job in 26 hours and Simon and Kamila working together can do the same job in 9 hours , find how long it takes
Kay [80]

Answer:

Simon takes approximately 13.76 hours to complete the job alone.

Step-by-step explanation:

We are given the following in the question:

Kamila can do a job in 26 hours  

So, part of work done by Kamila in 1 hour =

\dfrac{1}{26}

Simon and Kamila working together can do the same job in 9 hours .

So, (Simon and Kamila)'s 1 hour work =

\dfrac{1}{9}

So, Simon's 1 hour work =

\dfrac{1}{9}-\dfrac{1}{26}=\dfrac{17}{234}

So,

Simon can do \frac{17}{234} part of work in hour = 1

Time taken by Simon to complete the job alone =

\dfrac{1}{\frac{17}{234}}=\dfrac{234}{17}\approx 13.76 \text{ hours}

Thus, Simon takes approximately 13.76 hours to complete the job alone.

3 0
3 years ago
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Dominik [7]
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3 0
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muminat

Answer:

-6

(I don’t understand what you mean by on & 5 but..)

Step-by-step explanation:

The two negatives (the -(- ) cancel each other out and make a postive, so

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