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GenaCL600 [577]

4 years ago

12

What is the range of y=2 to the power of x

1 answer:

melisa1 [442]4 years ago

6 0

The range is 0 to indifinity

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The function f(x) = –x2 + 20x – 75 models the profit from one customer, in dollars, a shop makes for printing photos, where x is

trasher [3.6K]

The function is graphed as shown below

Part A:

We use the formula $- \frac{b}{2a}$ to find the vertex of the function. A quadratic function of the form of $a x^{2} +bx+c$ and equating this form to the given function $- x^{2} +20x-75$ , we have
$b=20$ and $a=-1$ .

Substituting $a$ and $b$ into the vertex formula, we have
$x=- \frac{20}{2(-1)}=10$ , as shown in the graph

This calculation means that the highest profit is achieved when the number of photo printed equals to ten photos

Part B:

We can find solution to this equation by factorising

$- x^{2} +20x-75=0$
$-( x^{2} -20x+75)=0$
$x^{2} -20x+75=0$
$(x-5)(x-15)=0$
$x=5$ and $x=15$ , as shown in the graph

The two values means that the company makes no profit when they either produce 5 or 15 photos

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4 years ago

A marketing company surveys 100 males and 100 females between the ages of 55 and 70 to determine how many times they text each d

KiRa [710]

Answer:

Answer: I believe that A is the correct answer.

On average, females text more than males.

Step-by-step explanation:

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3 years ago

53, Margie usually drinks 12.25 liters of water in one week (7 days), 1 she continues to drink water at the same rate, what is t

Anna [14]

Using the information given in the question, the total number of liters Margie will drink in a 4 week period is 39

<u>Consider the given information:</u>

<u />

12.25 liters per week
Continues this for 4 weeks

<u>Equation formed with said information:</u>

Liters per week × The 4-week period

<u>Solving the equation</u>

12.25 × 4

= 49

Therefore, after the 4-week period Margie would of drank 49 liters

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List three ways that reading hieroglyphs differs from reading english

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1. different writing types.
2. language
3. read.

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4 years ago

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Graph the line with slope 1/5 and y-intercept-2

Arturiano [62]

You want to start at -2 on the y line wich is the vertical line then 1/5 is rise over run so you rise (go up) one and run ( go right)5

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