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I am Lyosha [343]
3 years ago
10

1 /3 − (−1 /5 ) a. -1/2 b. 1/4 c. 2/15 d. 8/15

Mathematics
2 answers:
Alexandra [31]3 years ago
8 0

Answer:

D. 8/15

Step-by-step explanation:


Nadya [2.5K]3 years ago
7 0

Hello there! :)

<u><em>Answer:</em></u>

<u><em>8/15</em></u>

<u><em>*The answer must have a fraction.*</em></u>

Step-by-step explanation:

First, apply by the rule of fractions.

\frac{1}{3}+\frac{1}{5}

Then, multiply by the numbers from numerator to denominator.

5*3=15

3*1=3

\frac{5}{15}+\frac{3}{15}

When if denominator are equal, it combine the fraction.

\frac{5+3}{15}

And finally add by the numbers on numerator.

5+3=8

Answer: =\frac{8}{15}

Hope this helps!

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abruzzese [7]

Answer:

9

Step-by-step explanation:

we know by definition that

f^{-1}(f(x))=x\\\\f^{-1}(\frac{2x}{3})=x\\\\f^{-1}(x)=ax\\\\f^{-1}(\frac{2x}{3})=a(\frac{2x}{3})=x\\\\f^{-1}(x)=\frac{3x}{2}

so now we evaluate

f^{-1}(6)=\frac{3*6}{2}\\\\=3*3\\\\f^{-1}(6)=9

and if we want to do an extra step

f^{-1}(f(6))=6\\\\f^{-1}(\frac{2*6}{3})=f^{-1}(4)=\frac{3*4}{2}=6

which works.

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cestrela7 [59]
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A rectangle has an area of 12y^2+21y^512 y 2 +21y 5 12, y, squared, plus, 21, y, start superscript, 5, end superscript.The width
umka21 [38]

Answer:

<em>Width</em>: 3y²

<em>Length</em>: 4 + 7y³

Step-by-step explanation:

The area of the rectangle is the length multiplied by the width. For the area given: 12y² + 21y⁵

12y² = 3y²*4

21y⁵ = 3y²*7y³

So, the greatest common monomial factor is 3y², which is the width.

The area is 3y²*(4 + 7y³), the first term is the width, the other must be the length: 4 + 7y³.

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