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2 years ago

15) The sum of one-fourth, one-ninth and one- third of a number is 25. Find the number.

Mathematics

2 answers:

klio [65]2 years ago

7 0

Answer:

Step-by-step explanation:

(1/4 + 1/9 + 1/3)x = 25.

x = 36

Oksi-84 [34.3K]2 years ago

3 0

Answer:

Let the number be x

(1/4 + 1/9 + 1/3) * x = 25

25/36 * x = 25

25x = 25*36

x = 25*36/25

x = 36

Step-by-step explanation:

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2 years ago

A boy has 380 prize tickets he wants to exchange for action figures at a prize booth. At

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Answer:

Step-by-step explanation:

Hi there,

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3 years ago

Which of the following is the inverse of the given function? Y=3x^5-4

lawyer [7]

$y\textrm{ }=\textrm{ }(\frac{x\textrm{ }+\textrm{ }4}{3} )^{\frac{1}{5} }$

Step-by-step explanation:

Given function $y\textrm{ }=\textrm{ }3x^{5}\textrm{ }-\textrm{ }4$

To find an inverse for any given function, which is of the form $y=f(x)$ , always swap $x$ and $y$ in the equation and try to get the form $x=f(y)$ . Now, swapping back $x$ and $y$ , we get the inverse function.

On swapping $x$ and $y$ , we get $x\textrm{ }=\textrm{ }3y^{5}\textrm{ }-\textrm{ }4$

$y\textrm{ }+\textrm{ }4\textrm{ }=\textrm{ }3x^{5}$

$x^{5}\textrm{ }=\textrm{ }\frac{y\textrm{ }+\textrm{ }4}{3}$

$x\textrm{ }=\textrm{ }(\frac{y\textrm{ }+\textrm{ }4}{3} )^{\frac{1}{5} }$

Swapping back $x$ and $y$ , we get $y\textrm{ }=\textrm{ }(\frac{x\textrm{ }+\textrm{ }4}{3} )^{\frac{1}{5} }$

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2 years ago

When i was 18 years old, my sister was half my age. Now I am 82 years. How old is my sister now?

iVinArrow [24]

Answer:

$41 \: \: \: years \: \: \: old$

Step-by-step explanation:

$me \: \: \: \: \: \: \: \: \: \: \: sis \\ 18 \: \: \: \: \: \: \: \: \: \: \: \: 9 \\ 82 \: \: \: \: \: \: \: \: \: \: \: x \\ \\ use \: \: cross \: \\ multipaction \\ \\ 18x = 82 \times 9 \\ 18x = 738 \\ \frac{18x}{18} = \frac{738}{18} \\ x = 41$

4 0

3 years ago

Read 2 more answers

An explanation would be appreciated!!

sweet-ann [11.9K]

Answer:

Answer: l = 82.5

Step-by-step explanation:

11/2 x 15 = 82.5.

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1 year ago

15) The sum of one-fourth, one-ninth and one- third of a number is 25. Find the number.​

15) The sum of one-fourth, one-ninth and one- third of a number is 25. Find the number.