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4 years ago

Which statement about this function is true?

Mathematics

1 answer:

Mazyrski [523]4 years ago

3 0

Answer:Start studying office equipment module. Learn vocabulary, terms ... Terms in this set (37). Which of these statements is true about preventative maintenance? ... Use the Help function to guide her through the problem. Which tool should Tracy, ..

Step-by-step explanation:

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Select the correct answer.

Hitman42 [59]

Answer:

See explanation

Step-by-step explanation:

The question is incomplete, as the function is not given. So, I will make an assumption.

A quadratic function is represented as:

$f(x) = ax^2 + bx + c$

If $a > 0$ , then the function has a minimum x value

E.g. $f(x) = 4x^2 - 5x + 8$ ------ $4 > 0$

Else, then the function has a maximum x value

E.g. $f(x)= -4x^2 -5x + 8$ ---- $-4 < 0$

The maximum or minimum x value is calculated using:

$x = -\frac{b}{2a}$

For instance, the maximum of $f(x)= -4x^2 -5x + 8$ is:

$x = -\frac{-5}{2*-4}$

$x = -\frac{5}{8}$

So, the maximum of the function is:

$f(x)= -4x^2 -5x + 8$

$f(-\frac{5}{8}) = -4 * (-\frac{5}{8})^2 - 5 *(-\frac{5}{8}) +8$

$f(-\frac{5}{8}) = 9.5625$

8 0

3 years ago

An iPhone costs £699 in London, €799 in Paris and $1,099 in New York. Using £1 = €1.13 and £1 = $1.37, state the lowest price of

Alex787 [66]

Answer:

£699 in London

£902.87 in Paris

£1505.63 in New York

The lowest price of the iPhone is £699 in London.

3 0

3 years ago

An animal shelter has $2500 in its reserve fund. The shelter charges $40 per animal placement and would like to have at least $4

Elena-2011 [213]

Answer:

Step 1

Write and solve the inequality:

2,500 + 40a ≥ 4,000, or 40a ≥ 1,500

a ≥ 37.5

Step 2

If the shelter places 30 cats and 10 dogs,

or 40 animals, that will be enough to meet

its goal, because a = 40 is a solution to the

inequality a ≥ 37.5.

5 0

3 years ago

The Guinness book of world records states that the tallest trophy is about 270 inches. If they stacked 4 of those trophies on to

castortr0y [4]

Hey there!

If the tallest trophy is about 270 inches, and you stack 4 of those trophies on top of each other, you'd be multiplying 270 times 4.

270×4= 1,080

So, if you stacked four 270-inch trophies on top of each other, they would be 1,080 inches high.

5 0

3 years ago

Read 2 more answers

The half-life of a radioactive isotope is 10 years. About how long would it take 5 grams of the isotope to decay until there wer

valkas [14]

Answer:

Option A. 10 years

Step-by-step explanation:

we know that

Half-life $(t^{\frac{1}{2}})$ is the amount of time required for a quantity to fall to half its value as measured at the beginning of the time period.

In this problem $(t^{\frac{1}{2}})$ of a radioactive isotope is 10 years, which means that after 10 years half of the sample would have decayed and half would be left as it is.

After 10 years ( first half life) 5/2 = 2.5 g decays and 2.5 g remains left

8 0

3 years ago