D and 3, sorry if wrong hahaha
0.6/0.0024 = 250
.6 goes into 0.0024 250 times
2.5 still if you make it a fraction it would be 2 and 1 1/2 so you can't simplify that any more
To find this answer, we should subtract 2 1/2 from 3 1/4. The simplest way to do this is to turn them into improper fractions, found the least common denominator, and subtract the numerators.
3 1/4=13/4
2 1/2=5/2
The least common multiple is 4, so we should multiply the numerator and denominator of 5/2 by 2.
5/2=10/4
Now we can just subtract the numerators.
13/4-10/4=3/4
Using the math above, we can see that it saves D. 3/4 hours.
Answer:
25 choices
Step-by-step explanation:
Given
Possible Combinations: 1 to 25
Selections: 3 numbers
Required
Determine the number of choices of the first number
The first number of the lock can be any of 1 to 25.
This is so because when you counting from 1 to 25, there are 25 numbers
<em>Hence, number of choices is 25 numbers</em>
