Answer:

Step-by-step explanation:
Given

Required
What value of c makes the mean = 10
Mean is calculated as

In this case;
Mean = 10 and n = 4;
So, we have:


Multiply both sides by 4


Solve for c


'B' and 'D' are correct.
'C' isn't, and we don't know about 'A' because you left it out.
Answer:
Step-by-step explanation:
Mode is the number that appears most often in a set, so for this one the mode would be 3 since it appears the most often
Answer:
∠ABC = 46°
Step-by-step explanation:
DB and BC are of same length (radius), making it an isosceles triangle.
The base of the triangle is the same at 23°, a total of 46°.
180° - 46° = 134°
But we need ∠ABC, and since points DBA lie on the circumference, it's a straight line.
Therefore, 180° - 134° = 46°
Answer:
b. 9
Step-by-step explanation:
36+97=133
80+44=124
133-124=9