Answer:
hmmm sorry I wish I could help man or girl. just try your best you'll get there I promise you that.
Step-by-step explanation:
Answer:
mABC=130°
mEBD=130°
mABE=50°
Step-by-step explanation:
Answer:

Step-by-step explanation:

Collect like terms
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⇒
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Calculate
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Hope I helped!
Best regards! :D
Answer:
a>0
Step-by-step explanation:
if a is negative then the subtraction sign would switch. therefore, for the expression to have a negartive value a must be greater than 0
Answer:
The third option.
Step-by-step explanation:

Hence the 3rd option.