Answer:
5. We can already tell from the looks of it that she is using a different number for pi throughout her answers. Therefore it is C
6. 2 x 3.14 x 4.9 = 30.772 rounded would be 31, C is your answer. *formula of circumference:* pi(3.14 or 22/7 whatever they tell you to use for pi) x 2(its just always there when finding circumference) x radius(half of diameter or already given radius)
7. Let's just find the value of X on the top.
51(given degree) + 90(right angle degree) + X = 180(straight line degree)
51 + 90 + x = 180
141 + x = 180
-141 -141
X = 39
39 is the same to x beneath so therefore the value of x is 39 degrees.
