Answer:C≈75.4cm
d Diameter
24
cm
d
r
r
r
d
d
C
A
Using the formulas
C=2πr
d=2r
Solving forC
C=πd=π·24≈75.39822cm
Step-by-step explanation:
answer:
2x + 12 = c
step-by-step explanation:
- one time fee = $12
- each game = $2
- let x be the number of games
- c = total cost
2x + 12 = c
Answer:
f(x) = x² - 2x - 15
Step-by-step explanation:
∵ The function intersect x-axis at -3 and 5
∴ f(x) = 0 at x = -3 , 5
∵ The form of the quadratic equation is ⇒ ax² + -b/a x + c/a = 0
ax² - b/a x + c/a = 0
Where the sum of its roots is b/a and their multiplication is c/a
∵ a = 1
∵ -3 , 5 are the roots of the quadratic equation
∴ b = -3 + 5 = 2
∴ c = -3 × 5 = -15
∴ f(x) = x² - 2x - 15
