Answer: 2 & 2/4 which is choice A
Work Shown:
1/4 = 0.25
2/4 = 0.5
3/4 = 0.75
2 & 3/4 = 2 + 3/4 = 2 + 0.75 = 2.75
5 & 1/4 = 5 + 1/4 = 5 + 0.25 = 5.25
Subtract the values:
5.25 - 2.75 = 2.5
Then convert back to a mixed number
2.5 = 2 + 0.5 = 2 + 2/4 = 2 & 2/4
Optionally you can reduce that 2/4 into 1/2, but it appears your teacher has chosen not to.
Answer:
A
Step-by-step explanation:
11/4 hours on the first day
21/4 hours on the second
21-11=10
10/4 hours or 2 2/4
Yes you are correct.
You have to use logarithms.
1) a = log_3 (1/27) = -log_3 (27) = -3
2) b = log_3 (9 * 3^(1/2)) = log_3 (3 ^ {5/2}) = 5/2
3) c = -log_3 (sqrt3) = -1/2
well combine like terms
-3x = -21
divide both sides by -3
x = 7
