angle C = 90°
angle O = 67°
Step-by-step explanation:
Line AC is tangent to the circle at point C. Since OC is the radius, this means that OC is perpendicular to AC. Since the sum of the interior angles of a triangle is 180°, then
23° + 90 + angle O = 180°
or
angle O = 67°
Answer: 5x - 7 = 9
Explanation:
Let's think the unknown number as, "x"
Product means multiplication so 5 multiply the unknown number which is 5x. Seven less mean's to subtract so 5x - 7. And then the result is 9. So 5x - 7 is 9 or 5x - 7 = 9.
Sorry for not providing enough explanation last time. But I hope this is enough-
The answer should be 3 hours untill they both have the same amount of money
3141.6 cubic meters
Step-by-step explanation:
The volume of a cylinder is given by;
πr²h
π * (²⁰/₂)² * 10
π * 100 * 10
= 3141.6
