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miss Akunina [59]
3 years ago
14

PLZ HELP 10 PTS!!

Mathematics
2 answers:
solniwko [45]3 years ago
7 0

Answer:

Jill's best friend jumped 8/21 feet further than Jill.

Step-by-step explanation:

we have that

Jill jumped 6 1/3 feet

Jill best friend jumped 6 5/7 feet

To find out how much farther did Jill's best friend jumped, subtract the length that Jill jumped from the length that Jill best friend jumped

6\frac{5}{7}-6\frac{1}{3}

but first convert mixed number to improper fraction

6\frac{5}{7}\ ft=\frac{6*7+5}{7}=\frac{47}{7}\ ft

6\frac{1}{3}\ ft=\frac{6*3+1}{3}=\frac{19}{3}\ ft

substitute the values

\frac{47}{7}-\frac{19}{3}=\frac{47*3-7*19}{21}=\frac{8}{21}\ ft

therefore

Jill's best friend jumped 8/21 feet further than Jill.

kvv77 [185]3 years ago
3 0

Answer:

Kates best friend jumped 8/21 feet more than kate did

Step-by-step explanation:

First to find the difference between two fractions they need a common denominator, 21 works for this. Then the actual fractions need to match the denominator. 7/21 and 15/21 are our new frations. Then when subtraction you subtract the numerators, the answer to that is 8/21 after simplifying (in this case you cant) you subtract the whole numbers, 6 – 6 = 0 the add the whole and fraction together. Kates best friend jumped 8/21 more feet than kate did.

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Answer:

I would rather use their multiples.

Step-by-step explanation:

With 13 and 14, neither number has many factors (and few prime factors, for that matter) so factoring would be pretty much useless. If you wanted to use the prime factors of 14 (7 and 2) multiplying either of them by 13 would not give you the LCM. Actually the LCM is just 13*14 which is 182.

Good luck!

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