If you use 3.14 in terms of pi, it's 22.8906. If you use the pi symbol, it is 7.29π.
Explanation: You divide 5.4 by 2 to get the radius. The radius is 2.7 The formula for area of a circle is πr^2. You square 2.7 and get 7.29π and then multiply by 3.14 or leave it as 7.29π
Answer:
60 tickets for children were sold
Step-by-step explanation:
Let x be the number of sold children's tickets and let y be the number of adult tickets sold, then we can pose the following equations.
(i) Because 132 tickets were sold in total
(ii) because the total of $ obtained by sales was 931.20.
We must clear x. Then we substitute (i) in (ii)
60 tickets for children were sold
Answer:
b
Step-by-step explanation:
u1 = 20
r = 5
Un = 20 × 5^(n-1)
Un = 20 × (5^n)/5
Un = 4 × 5^n
Answer:
y = ±2i
Step-by-step explanation:
6y^2 + 24 = 0
Divide both sides by 6
y^2 + 4 = 0
Subtract 4 from both sides
y^2 = -4
Take the square root of both sides
y = ±√-4
y = ±2√-1
y = ±2i
Answer:
27 times bigger
Step-by-step explanation:
V(sphere) = 4/3πr³
Michael: 4/3π3³ = 4/3×27π or 36π
Patrick: 4/3πr³ = 4/3πx9³ or 4/3x729π or 972π
36π to 972π is 1 : 27