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Anna007 [38]
2 years ago
13

Help please???????????

Mathematics
2 answers:
rosijanka [135]2 years ago
8 0

Answer:

D

Step-by-step explanation:

The problem is put in different fractions to make it more confusing.

1 1/15 miles+ 1 3/5 miles+ 1 2/3 miles

<u>We can find the common denominator of all of the fractions.</u>

1 \frac{1}{15} + 1 \frac{9}{15} + 1 \frac{10}{15} \\= 3+\frac{20}{15} =4 \frac{5}{15}\\\\=4  1/3

erik [133]2 years ago
8 0
<h3><u>given</u><u>:</u></h3>

monday = 1 \frac{1}{15}

tuesday = 1 \frac{3}{5}

wednesday = 1 \frac{2}{3}

<h3><u>to</u><u> </u><u>find</u><u>:</u></h3>

the total number of miles Kenya ran in 3 days.

<h3><u>solution</u><u>:</u></h3>

<u>\frac{16}{15}  +  \frac{8}{5}  +  \frac{5}{3}</u>

<u>=  \frac{16}{15}  +  \frac{8 \times 3}{5 \times 3}  +  \frac{5 \times 5}{3 \times 5}</u>

<u>=  \frac{16  + 24 + 25}{15}</u>

<u>=  \frac{65}{15}  =  \frac{13}{3}</u>

<u>= 4 \frac{1}{3}</u>

<u>therefore</u><u>,</u><u> </u><u>the</u><u> </u><u>correct</u><u> </u><u>answer</u><u> </u><u>is</u><u> </u><u>option</u><u> </u><u>D</u><u>.</u>

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Lerok [7]

Answer:

[(2)^√3]^√3 = 8

Step-by-step explanation:

Hi there!

Let´s write the expression:

[(2)^√3]^√3

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Let´s apply the following exponents property: (xᵃ)ᵇ = xᵃᵇ and multiply the exponents:

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[(2)^√3]^√3 = 8

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4 years ago
The numerator and denominator of a fraction are in the ratio of 3 to 5. If the numerator and denominator are both increased by 2
ivolga24 [154]

Question:

The numerator and denominator of a fraction are in the ratio of 3 to 5. If the numerator and denominator are both decreased by 2, the fraction is now equal to  \frac{1}{2}.

If n = the numerator and d = the denominator, which of the following systems of equations could be used to solve the problem?

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Answer:

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Solution:

Let n be the numerator of the fraction and d be the denominator of the fraction.

Given the numerator and denominator of a fraction are in the ratio of 3 to 5.

This can be written as n : d = 3 : 5.

⇒ \frac{n}{d}= \frac{3}{5} – – – – (1)

Do cross multiplication, we get

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When the numerator and denominator are decreased by 2, the fraction is equal to \frac{1}{2}.

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Do cross multiplication, we get

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⇒ 2n – 4 = d – 2

Hence, 5n = 3d and 2n – 4 = d – 2 can be used to solve the problem.

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9514 1404 393

Answer:

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