Answer:
a) 1 minute and 12 seconds
b) .833 repeating
c) 25 minutes and 12 seconds
Step-by-step explanation:
A and B are simple so for C:
21 laps = 5 * 4 = 20, 6 * 4 = 24, 20 + 1 = 21, 24 + 1 minute and 12 seconds = 25 minutes and 12 seconds
12 * 5 = 60
If I messed up tell me I keep confusing myself.
Answer:
$22.34
Step-by-step explanation:
really simple.
just multiply the number by how much the coin is worth
24 x 1 = 24
62 x 5 = 310
55 x 10 = 550
16 x 25 = 400
19 x 50 = 950
then add all of them
24 + 310 + 550 + 400 + 950 = 2234
and finally divide it by 100
2234 ÷ 100 = 22.34
and just pop in a dollar sign
$22.34
Answer:
See below ↓↓
Step-by-step explanation:
<u>Finding the radius</u>
- C = 2πr
- 25 = 2 x 3.14 x r
- r = 25 / 6.28
- r = 3.98 cm ≅ 4 cm
<u />
<u>Surface Area</u>
- 4πr²
- 4 x 3.14 x 4 x 4
- 3.14 x 64
- 200.96
- <u>201 cm²</u>
<u></u>
<u>Volume</u>
- 4/3πr³ = 4πr² x r/3
- 201 x 4/3
- 67 x 4
- <u>268 cm³</u>
Although I will not give an explanation, your answer is...
a = -6
Answer:
See below
Step-by-step explanation:
- <em>There is a formula for estimating square root of non-perfect square numbers</em>
- <em>√(A²±B) = A ± B/2A</em>
- <em>where A² is the nearest perfect square, B is the difference between the original number and the perfect square</em>
<u>Examples</u>
- 1) √75 = √(8²+11) = 8 + 11/(2*8) = 8 + 11/16 = 8.6875
- 2) √114 = √(11² - 7) = 11 - 7/(2*11) = 10.6818
