Answer:
r=28.27 cm aprox
Step-by-step explanation:
Well you know that the area of a circle is A= so
2511= so
=2511/
r=28.27 cm aprox
One of the same side angles of two parallel lines is 20° smaller than the other one. Find all angles. Please explain this proble
1 answer:
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Answer:
So then the correct answer is B. $200.
Step-by-step explanation:
Notation
Let X be the average contribution size before John makes his contribution.
Let Y be the total contribution size before John makes his contribution.
Let Z be John's contribution.
We know that for this case $ 75 represent the original average amount before the contribution with 50% increase so we can set up the following equation in order to find the original average amount
And solvong for X we got:
Now we can find the total contribution before the donation with the following proportion:
And then with the formula of average taking in count the 6 values we can find the size of donation Z like this:
So then the correct answer is B. $200.