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Answer:
Hello! answer: d = 40
Step-by-step explanation:
This is a supplementary angle
Meaning it will add up to 180 degrees
So...
90 + 50 = 140
180 - 140 = 40 therefore. d = 40 hope that helps!
Like terms are terms that have something in common like an exponent or variable
8. 3a & 16a
9.

&

10.

&

11.

&

&

Try 12 & 13 on your own to see if you get the hang of it - if you want me to check it ; put your answer in the comment section of my answer :))) I believe in you .
Greetings!To find the percent of a number, you mutliply the percent by the number, then divide by 100. We can use this rule to create an equation:

Multiply both sides by
100.
Simplify.

Divide both sides by
50.

Simplify.
36% of 50 is 18.
Hope this helps.
-Benjamin