Answer:
20
Tips:
Its easy math if its trouble use a caclulator
The prime factorization of 75 is 3 × 5 × 5 or 3 x 52.
Answer:
115
Step-by-step explanation:
because 6 & 7 will add up to 180
so if 7 = 65
then 180 - 65 = 115
#6 = 115
Answer:
742
Step-by-step explanation:
First, you need to determine if you need to round up or down. This this case, because .2 is less then .5 , you need to round down to the nearest whole. This should result in 742. Thus, 742 is the correct answer.
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Answer:
Step-by-step explanation:
First, we need to find the common denominator
The easiest way to do this is by multiplying the two given denominators, which are 2 and 5.
2 × 5 = 10
So, our common denominator is 10. Then, multiply the numerators of the two fractions by 2 and 5. Here's why:
= We multiplied the top and bottom by 2 to make sure our new fraction stays equivalent to the original fraction.
Do the same thing for the other one:
=
Finally, subtract the two fractions to find the difference between the two times:
=
The reason we used the common denominator is because we can only add or subtract fractions if they have the same denominator.