Please help
I have no idea how to do this

a. AED=130 degrees

b. DEB=50 degrees

Step-by-step explanation:

a. There are 360 degrees in a circle. AEC and DEB are equal. We can remove them from the original 360.

360-50-50=260

AED and CEB are equal. Divide the remaining 260 between them.

260/2=130

AED=130 degrees

b. we got the answer to this in the first question. DEB is equal to AEC.

DEB=50 degrees

It might help you to lay two pencils across each other like the lines in this problem are. Notice that when you "open" up one side, the other opens the same amount. Same if you "close" a side. Sisicors are also a great example of this. It'll help you visualize which angles will be equal.

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step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

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