3 years ago

How long is 75% of 60 minutes

Mathematics

2 answers:

MrRissso [65]3 years ago

8 0

Answer: 45

Step-by-step explanation:

Nikolay [14]3 years ago

5 0

Answer:

45min

Step-by-step explanation:

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What is the probability that someone in the United States owns at least one dog?

Gennadij [26K]

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2 years ago

Myka bought a shirt that was originally priced at $40 and on sale for $34. What was the percent discount?

Stells [14]

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3 years ago

Solve the equation. Show your work, or explain your reasoning.<br><br> -3x - 5 = 16

Pani-rosa [81]

First add 5 to 16, so -3x=21
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2 years ago

Find the inverse of the following function. Then prove they are inverses of one another.

solmaris [256]

Answer: $\dfrac{x^2+1}{2}$

Step-by-step explanation:

Given

$f(x)=\sqrt{2x-1}$

We can write it as

$\Rightarrow y=\sqrt{2x-1}$

Express x in terms of y

$\Rightarrow y^2=2x-1\\\\\Rightarrow x=\dfrac{y^2+1}{2}$

Replace y be x to get the inverse

$\Rightarrow f^{-1}(x)=\dfrac{x^2+1}{2}$

To prove, it is inverse of f(x). $f(f^{-1}(x))=x$

$\Rightarrow f(f^{-1}(x))=\sqrt{2\times \dfrac{x^2+1}{2}-1}\\\\\Rightarrow f(f^{-1}(x))=\sqrt{x^2+1-1}\\\\\Rightarrow f(f^{-1}(x))=x$

So, they are inverse of each other.

8 0

3 years ago

Solve: 5 + n > 2

tiny-mole [99]

$\\ \sf\longmapsto 5+n>2$

We have to find n
Take 5 to right side
sign will be changed

$\\ \sf\longmapsto n>2-5$

Simplify

$\\ \sf\longmapsto n>-3$

3 0

3 years ago