As you have discovered, any fraction can be rewritten in many equivalent ways. When choosing a denominator that will work to add two fractions, there is no single correct choice. Often, people find it convenient to use the smallest whole number that all denominators divide into evenly. This number is
called the lowest common denominator.
For example, when adding the fractions $4$ 4, you could choose to rewkite each fraction with 48 or 06 in the denominator. However, the numbers
will stay smaller if you choose to rewrite each fraction with a denominator of 24, since 24 is the lowest number that 3, 6, and 8 divide into evenly.
(Dividing into a number evenly means that there is no remainder)
Por each of the following sums, first rewrite each fraction using the lowest common denominator. Then add. Read the Math Notes box in this lesson for
additional help Homework
b.
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8:16
Math

2 & 7

step-by-step explanation:

he climbs 300 ft/hr at a constant rate. the peak is at 1,500 ft.

when going up, he reaches 600 ft in 2 hours. remember, that he is going in a constant rate. divide 600 with 300:

600/300 = 2

assuming that he takes the same route back (meaning that it's a 1500 ft route back, you can solve.

note also that you are solving when he gets back to 600 ft after he reaches the peak.

first, find the amount of hours it takes to get up the peak. divide the total amount (1500), with the ft/her (300) to get the amount of hours (x):

1500/300 = x

x = 5

it takes jamie 5 hours to get up. now, he is returning down, and reaches 600 (his current destination). remember that he climbs at a constant 300 ft/hr. divide 600 with 300:

600/300 = x

x = 2

now add the two numbers together.

x = 5 + 2 = 7

jamie takes 7 hours to go up the mountain and reach his current position when descending.

(total amount/constant rate) = (time).

remember that it is a constant rate, so in total, when he gets back down the mountain, it will take the same amount of time as when he goes up. the total amount for the round trip is: 5 + 5 = 10.

~

never fear papaguy is here

answer