A researcher recorded the number of e-mails received in a month and the number of online purchases made during that month for 50 people with an online presence. The resulting data were used to conduct a hypothesis test to investigate whether the slope of the population regression line relating number of e-mails received to number of online purchases is positive. What are the correct hypotheses for the test?

a. H0:β1=0Ha:β1≠0

b. H0:β1=0Ha:β1>0

c. H0:β1=0Ha:β1<0

d. H0:β1>0Ha:β1=0

e. H0:b1=0Ha:b1≠0

Answer: $880.45

Step-by-step explanation:

find the cost of tickets

18*11.50= $207

now add the other costs

207+625+25+23.45= $880.45

The function that is decreasing on the sale interval as the function graphed in the attached image is " F(x) = -x² + 4x -4.

When the y-value of a function is decreasing as the x-value goes up, that function is said to be a decreasing function.

That is  when x1 < x2 then f(x1) ≥ f(x2)

Let F(x) = 4

Thus

f(4) = -(4)² + 4(4) -4

=  16 + 16 - 4

= 28

Now, let F(x) = 2

Thus

f(2) = -(2)² + 4(2) -4

= 4 + 8 - 4

= 8

Note that X1 = 4 and X2 = 2

Thus  x1 < x2 then f(x1) ≥ f(x2).

Hence Option C is the decreasing function.

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Answer:

36

Step-by-step explanation:

A (base) 6

B (Base) 12

H (height) 4

Answer:

156.00

Step-by-step explanation:take away 8% sales tax away from it

Answer:

C(n) = 200 + 2n

Step-by-step explanation:

Given:

Fixed cost state by printing company = $200

Variable charges per book print = $2

Find:

Cost function of number of books print

Computation:

Assume:

Number of books printed = n

Total cost of n books printed = Fixed cost state by printing company + Variable charges per book print[Number of books printed]

C(n) = 200 + 2n

Where n = number of book

C = Total cost

Jaleel's total cost as a function of the number of books he print is [tex]c = 2n + 200[/tex]  (in dollars)

You can represent the unknown amounts by the use of variables. Follow whatever the description is and convert it one by one mathematically. For example if it is asked to increase some item by 4 , then you can add 4 in that item to increase it by 4.

If something is for example, doubled, then you can multiply that thing by 2 and so on methods can be used to convert description to mathematical expressions or equations.

For the considered case, we don't know exactly how many books will Jaleel gets printed. So we can use variable here.

Let we have:

Then, as stated in the problem, for each book there is $2 price, and there is a fixed one-time charge of $200

Thus, we get total cost as:

c = Cost for n books + Fixed one-time cost.

(we don't write symbols like of currency generally, and understand it from context. Also, sign of multiplication is often hidden if there are non numeric symbols and numbers being multiplied are written together)

Thus, total cost is written as:

c = Cost for n books + Fixed one-time cost.

c = 2n + 200 (in dollars)

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Answer:

Don't awnser the bots

Step-by-step explanation:

They will try ro scam you

Answer:

x = 59.5

Step-by-step explanation:

the angles  of a quadralateral equal 360 degrees, one angles is 90 degrees, the other i 151, 90 + 151 = 241, 360 - 241 = 119, 119/2 = 59.5, x = 59.5

Answer:

Fraction mulitiplication adding its c

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer: 506 square units (answer choice B)

Step-by-step explanation:

The formula for the surface area of a triangular prism is:

SA = bh + 2ls + lb,

where b is the base, h is the height, l is the length, and s is the side of the triangle.

In this case, the base is 7 (Y), the height is 8 (h), the length is 18 (Z), and the side of the triangle is 9 (X).

So, by subsituition, we have:

SA = (7)(8) + 2(18)(9) + (18)(7)

SA = 56 + 324 + 126

SA = 506

The surface area is 506 square units.

Hope this helps! :)

Answer:

Step-by-step explanation:  Given is a function as 1 divided by the quantity x minus 10 squared

Mathematically translating we get

the function

Since the function become undefined at x=10 we get

vertical asymptote is

x=10

Limit x tends to 10 of f(x) will exist since both limits are equal

This is because let x tends to 0 from left.

Then we have

f(x) =  

Right limit also will be +infinity

This is because the curve is symmetrical about x=10 and hence limit would be +infinity.

Answer: The answer to this question is 10 :D

Step-by-step explanation:

The answer is 10 pounds.

2 pounds            7 quarts

4                                14

6                                 21

8                                 28

10                                35

Answer:

I think that is false

Step-by-step explanation:

A pentagon has 5 sides

The statement "a polygon that has four sides and four angles is a pentagon" is false.

A quadrilateral is a polygon with 4 number of sides and 4 vertices. A few examples of a quadrilateral are square, rectangle, rhombus, parallelogram, etc.

A polygon with four sides is known as a quadrilateral, therefore, the statement "a polygon that has four sides and four angles is a pentagon" is false.

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Answer: 15.45133224

Step-by-step explanation:

Find the area of the half circle.

r=6

pi (6)^2/2

Divide by two because it is a half circle not a circle.

pi (6)^2/2=18 Pi

We know there are two square with even side lengths so we know the sides of the two squares are 6 it is the same as the radius of the circle.

We multiply B*H= Area of the square

6*6=36 is the length of half of the rectangle aka the square

So we multiply that by 2 because there are 2 squares so we get 72

72-18 Pi= 15.45133224

Answer:

15.48 is the answer

Step-by-step explanation:

6×6×3.14=113.04

113.04÷2= 56.52

6×12= 72

72-56.52= 15.48

Answer:

Salt is sodium.

Answer:

Salt is Sodium.

Step-by-step explanation:

When you break down the compounds of salt you find molecules of sodium thus saying that salt is made up of sodium molecules.

Answer:

18 will be your answer

Step-by-step explanation:

Answer:

The answer is 18.

Step-by-step explanation:

[tex] \frac{x}{16} = \frac{9}{8} [/tex]

[tex]x = \frac{9}{8} \times 16[/tex]

[tex]x = \frac{9 \times 16}{8} [/tex]

[tex]x = \frac{144}{8} [/tex]

[tex]x = 8[/tex]

Therefor, the answer is x = 8.

Answer:

C

Step-by-step explanation:

Answer:

ihhrhi2rhhb4rhbur4hbur4hb43hubr4u3br

Step-by-step explanation:

Answer:

48%

Step-by-step explanation:

25 total students, 12 got either 0-4 or 5-9, 12/25 as a percent is 48 percent. Hope this helped! Good luck!

Answer:

348m^2

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

1130.4

Step-by-step explanation:

2x100pi + 160pi

Answer:

m>NQR=30°

m<LNS=61°

RQ=7

Step-by-step explanation:

m>NQR=180-89-61=30°

m<LNS=61°

RQ= 8/4=x/3.5 = 7

Answer:

113.1 cm²

Step-by-step explanation:

we are given the diameter of the circle (length is 12 cm), and the formula for the area of the circle, which is πr², where r is the radius

so first, we need to find the radius

the length of the radius is half the length of the diameter

so that means that r=d/2

r=d/2

r=12/2

r=6

therefore the length of the radius is 6

now square 6, which is the same as multiplying it by itself

6²=36

now, multiply the radius squared by π, which is often substituted for as 3.14 or 22/7  

so if we were to do 22/7 for instance,

36*22/7≈113.14

round that to 113.1

there's your answer :)

Hope this helps!