Answer:
C
Step-by-step explanation:
the proof of the answer is seen in the diagram
Answer:
1 4/21
Step-by-step explanation:
5/6 * 10/7
5/3 * 5/7
25/21
1 4/21
D. 10 is your answer.
In order to solve a proportion, you cross multiply.
In this case it will be 40=4x
Solve for x is 10. Therefore D is your answer.
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For 8 batches of brownies, you’ll need 4 cups of sugar

This happens whenever

or

. More generally,

whenever you start with one of these angles and add any multiple of

, so the general solution would be

, where

is any integer. (Notice that when

, you end up with

.)