The sum of the angles equals 180
therefore
x+(1/4x)=180
1 1/4 x = 180
x=180/ 1 1/4
x=144
1/4 x =1/4(144)=36
Answer:
1) 9
2) 34
Step-by-step explanation:
For the first one, it would be
= (6×3)/2
= 18/2
= 9
The second one is,
= 36- (12/6)
= 36 - 2
= 34
Answer:

Step-by-step explanation:
Given







Required
The weighted average
To do this, we simply multiply each score by the corresponding worth.
i.e.

So, we have:

Using a calculator, we have:

--- approximated
I think the answer is 90 degrees
X should be 7 after doing all the calculation.