Answer:
c = 2 * 3.14 * r and c = 3.14 * d
Step-by-step explanation:
The formulas for the circumference of a circle are
c = 2πr and c = πd
where r is the radius and d is the diameter
using π = 3.14
the formulas become
c = 2 * 3.14 * r and c = 3.14 * d
Answer:
45 mph ≠ 40 mph
Step-by-step explanation:
Answer:
Cornel pays $44.75 for his video game.
Step-by-step explanation:
First, you have to find the price after the 25% discount by calculating 25% of the initial price and subtracting that result from the original price:
60*25%=15
60-15=45
Then, you have to find the price after the 12% discount by calculating 12% of the price after the 25% discount and subtracting that result from the price after the 25% discount:
45*12%=5.4
45-5.4=39.6
Finally, you have to find the price including the tax by calculating 13% of the price after the discounts and add the result to that price:
39.6*13%=5.15
39.6+5.15=44.75
According to this, Cornel pays $44.75 for his video game.
Answer:
the value of the investment after 3 years= £11,904
Step-by-step explanation:
sarah invests £9600 at a simple interest rate of 8% per year
number of years = 3
Formula for simple interest
I = P*n* r
P is the initial amount invested= 9600
r is the rate of interest = 8% = 0.08
n = number of years = 3
Now we find interest using formula
I = 9600 * 0.08 * 3= 2304
Interest amount is 2,304
Now we add the interest with the initial amount to get the value of investment after 3 years
9600 + 2304= 11904
