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3 years ago

The output is three less than the input

Mathematics

2 answers:

Liono4ka [1.6K]3 years ago

8 0

Call the output f(x)
Call the input x
f(x) = x - 3

nexus9112 [7]3 years ago

7 0

Answer:

$y=x-3$

Step-by-step explanation:

We have been given a description. We are supposed to represent our given description in an equation.

We know that input of a function is x values and it is independent variable. The output is y values and it is dependent on x.

The output is three less than the input. We can represent this information in an equation as:

$\text{Output}=\text{Input}-3$

$y=x-3$

Therefore, our required equation would be $y=x-3$ .

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(4/9)^-1= A. -4/9 B. 9/4 C. -9/4

Romashka-Z-Leto [24]

Answer: 9/4

Step-by-step explanation: Think of $(\frac{4}{9})^{-1}$ as $\frac{4^{-1} }{9^{-1}}$ .

Now, we can change 4⁻¹ to 4¹ by moving it to the denominator and

we can change 9⁻¹ to 9¹ by moving it to the numerator.

So we have 9¹/4¹ which simplifies to 9/4.

5 0

3 years ago

27,643,087 round to the nearest million

Maksim231197 [3]

If the number before the place you are rounding to is a 5 or more you round up but if it is a 4 or below it stays the same so the answer is 28,000,000

4 0

3 years ago

A particular train is 25 feet tall. A model of the train was built with a scale of 4 inches which is equal to 5 feet. How tall i

sergeinik [125]

The answer is 20in. You multiply 4 by 5 because 5x5 is 25 so the answer is 20

3 0

3 years ago

!!HELP ME PLS!!

Alexeev081 [22]

Answer:

127 1/2 feet

Step-by-step explanation:

A model lighthouse uses a scale of 1/4 inch = 5 feet.

This means that 1/4 inch on the model represents 5 feet in actual life.

The height of the model lighthouse is 6 3/8 inches i.e. 51/8 inches.

The height of the actual lighthouse is:

1/4 inch = 5 feet

51/8 inches = x

Cross-multiply:

51/8 * 5 = 1/4 * x

=> x = 51/8 * 4 * 5

x = 127 1/2 feet

The height of the actual lighthouse is 127 1/2 feet.

4 0

3 years ago

Cube root 343 ^-3/ root 4 81

zlopas [31]

Answer:

$\frac{1}{1029}$

Step-by-step explanation:

$\frac{\sqrt[3]{343^{-3}}}{\sqrt[4]{81} }$

$\boxed{\text{Property: } a^{-b}=\frac{1}{a^{b}}}$

$\frac{\sqrt[3]{\frac{1}{343^{3}} }}{\sqrt[4]{81} }$

$\frac{\frac{\sqrt[3]{1} }{\sqrt[3]{343^3} } }{\sqrt[4]{81} }$

$\frac{\frac{1 }{343} }{3}$

$\frac{342 \cdot \frac{1 }{343} }{343 \cdot 3}$

$\frac{1}{1029}$

7 0

3 years ago