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Ad libitum [116K]
3 years ago
5

A marketing manager wishes to determine whether a relationship exists between the number of cereal boxes (Y) sold at the company

's retail store and the number of clerks on duty (X) per day. The sample data below will be used to examine this empirical problem. Calculate the slope of the regression line.
X Y
3 4
2 4
2 2
1 2

a. 0
b. 1
c. 2
d. None of the above
Mathematics
1 answer:
shusha [124]3 years ago
5 0

Answer:

I’m very unsure but I think it is b

Step-by-step explanation:

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4n+7-2 pls in really need help;-;
Advocard [28]

Answer:

4n + 5

Step-by-step explanation:

This equation cannot be simplified further

Unless you meant 4n + 7 <em>=</em> 2

Then the answer would be -1.25

7 0
3 years ago
Read 2 more answers
What is the rule for finding the vertex of a formula in Standard form? Use that rule to
worty [1.4K]

The vertex is the minimum or the maximum point of the parabola.

<em>x and f(x) represent the horizontal and the vertical coordinates of the vertex.</em>

<em />

The standard form of a parabola is

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

The x coordinate of the parabola is calculated using:

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

The value of the x-coordinate is then plugged in, into the equation to calculate the y-coordinate, as follows:

f(\frac{b}{2a}) = a(-\frac{b}{2a})^2 + b(-\frac{b}{2a}) + c

At the end of the calculation,

x and f(x) represent the horizontal and the vertical coordinates of the vertex.

Take for instance:

f(x) = 2x^2 + 4x - 9

The x-coordinate of the vertex is:

x = -\frac b{2a}

x = -\frac 4{2 \times 2}

x = -\frac 44

x=-1

The y-coordinate is:

f(x) = 2x^2 + 4x - 9

f(-1) =2 \times (-1)^2 + 4 \times -1 - 9

f(-1) =-11

So, the vertex of f(x) = 2x^2 + 4x - 9 is (-1,11)

See attachment for illustration of vertex of f(x) = 2x^2 + 4x - 9

Read more about vertex of parabola at:

brainly.com/question/20209326

5 0
2 years ago
-x^1 -10x -24 = 0 I’ll melt your popsicle
ohaa [14]

I don't have popsicle but I'm sure you will melt by this answer.

-x^1-10x-24=0 \\x+10x+24=0 \\11x=-24 \\\boxed{x=\frac{-24}{11}}

Hope this helps. (please don't melt)

r3t40

8 0
3 years ago
The height, h, in feet of a piece of cloth tied to a waterwheel in relation to sea level as a function of time, t, in seconds ca
BartSMP [9]

Answer:

20 seconds

Step-by-step explanation:

I assume you mean h(t)=8\cos(\frac{\pi}{10}t) for your function.

As the given function is in the form of f(t)=a\cos(bt+c)+d (some textbooks may write this formula differently), the period is equal to \frac{2\pi}{|b|}. Hence, the period of the given function is \frac{2\pi}{|\frac{\pi}{10}|}=\frac{2\pi}{1}*\frac{10}{\pi}=\frac{20\pi}{\pi}=20, or 20 seconds.

8 0
3 years ago
A ceramic vase was originally priced at $100 but went on sale for 50% off. If Ernesto bought the ceramic vase and paid 12% sales
romanna [79]
Answer: he payed $56 in total

Explanation:
50% of 100 is 50.
50 time 1.12 is 56
7 0
3 years ago
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