Given: line BC is parallel to line ED
m∠ABC = 70°
m∠CED = 30°

Prove: m∠BEC = 40°

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Explanation:

We start with which is the line just above the blank line.

Then we replace the angle CED with 30 and angle BED with 70. This is the substitution rule in action. Think of it like a substitute teacher taking a temporary place of the actual teacher.

So after using the substitution rule, we get showing why choice A is the answer.

a) 0.25x times 3. (could be wrong on equation.)

b) 2.25 pound of dark chocolate. (can i eat all the chocolate? plz? anyway, again, could be wrong, but i hope im right. all the chocolate together should be 5.25 pounds)

have a good day!

step-by-step explanation: