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pickupchik [31]

3 years ago

6

The perimeter of a rectangle is 30 inches. If its length is two times its width, find the dimensions. *

1 answer:

Tomtit [17]3 years ago

4 0

Answer: The length would be 10 in, and the width would be 5 in.

Step-by-step explanation:

10 is two times greater than 5, and 10 + 10 + 5 + 5 = 30. Therefore, the length of the rectangle would be 10 inches and the width of the rectangle would be 5 inches.

I hope this helps!

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katrin [286]

Answer:

Let the number they chose be 'x'.

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The product of their result = 110

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Step-by-step explanation:

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Olenka [21]

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3 years ago

Which rate should be used to convert 15 yards:1 feet per hour?

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3 years ago

Define a function f on a set of real numbers as follows: f(x) = 3x − 1 x , for each real number x ≠ 0 Prove that f is one-to-one

dalvyx [7]

Answer with Step-by-step explanation:

We are given that

$f(x)=\frac{3x-1}{x}$

For each real number $x\neq 0$

To prove that f is one -to-one.

Proof:Let $x_1$ and $x_2$ be any nonzero real numbers such that

$f(x_1)=f(x_2)$

By using the definition of f to rewrite the left hand side of this equation

$f(x_1)=\frac{3x_1-1}{x_1}$

Then, by using the definition of f to rewrite the right hand side of this equation of $f(x_1)=f(x_2)$

$f(x_2)=\frac{3x_2-1}{x_2}$

Equating the expression then we get

$\frac{3x_1-1}{x_1}=\frac{3x_2-1}{x_2}$

$3x_1x_2-x_2=3x_2x_1-x_1$

$3x_1x_2-3x_1x_2+x_1=x_2$

$x_1=x_2$

Therefore, f is one-to-one.

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3 years ago