Answer:
22.5
Step-by-step explanation:
Since two people take both courses, we can subtract two from 7, 8, and 21, giving us 5, 6, and 19.
Add 5 and 6 together to get 11. Since eleven students are in those two groups, we can answer this. The answer will be 11/19.
Answer:
25000076
Step-by-step explanation:
Hope this helps! :)
Answer:

Step-by-step explanation:
It's important to note that when two angles create a straight line, they are supplementary.
This means their angle measures add up to 180° since a 180° angle is a straight line.
Since we know the measures of both angles in equation form, we can add them together and have them equal 180 to solve for x.

Combine like terms:

Subtract 27 from both sides:

Divide both sides by 9:

So x = 17.
Hope this helped!
Sqrt16=4
sqrt2=irrational (meaning nevereneding and never repeating)
sqrt9=3
sqrt49=7
answer is B