Hello the answer of above is given by me and this is my second I'd
I have found the answer of Q 4 and it's given in the attachment
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Answer:
x = 11.5
Step-by-step explanation:

B. 90/360, because this is 1/4 from circle. It's even shown in the picture.
Example: If you take a protractor at 180°, then if you mirror it, then 360° will comeout, i.e. a circle.
Answer:
24
Step-by-step explanation:
= 49 because any number squared is positive.
Since b=2,
2(-4)= -8.
Then this is 49-8-17, which equals 24.
Answer:
y = -63
Step-by-step explanation:
y - 15 = -78
Add 15 on both sides to get y alone:
y - 15 + 15 = -78 + 15
y = -63