Answer:
Option <u>C. 13.3 in</u>.
Step-by-step explanation:
Here's the required formula to find the radius of the bike tire :
- C = circumference
- π = 3.14
- r = radius
Substituting all the given values in the formula to find the radius of the bike tire :
Hence, the radius of bike tire is 13.3 inches.
Answer:
<h3> 26²/₃ liters of 15% acid and 13¹/₃ liters of 33% acid</h3>
Step-by-step explanation:
Concentration Amount of Amount
of Solution Solution (L) of Acid
15% x 0.15x
33% y 0.33y
21% 40 0.21•40
x + y = 40 ⇒ x = 40 - y
0.15x + 0.33y = 0.21•40
0.15(40 - y) + 0.33y = 0.21•40
6 - 0.15y + 0.33y = 8.4
0.18y = 2.4
y = 13¹/₃
x = 40 - 13¹/₃ = 26²/₃
Answer:
Step-by-step explanation:
6 + 2 = 4, given
- 2 → 5, move two matchsticks, #10 and #12
- 4 → 11, move one matchstick, #18
6 + 5 = 11, correct
