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3 years ago

10

Each 6 students reported the number of movies they saw in the past year 18,14,18,14,19,9

1 answer:

Brilliant_brown [7]3 years ago

8 0

Answer:

Average: Add all and divide by 6

that gives us 92/6 = 15.333... or 15

Median: order it:

9, 14, 14, 18, 18, 19

median is 16

2 averages

Median: 16

Average: 15.33.. or 15

Outlier: 9

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Which of the following exponential regression equation best fits the data shown below. Please help ASAP. ☺️

stepladder [879]

Answer:

Option D [ $y=6.61\,*\,1.55^x$ ] in the list of possible answers

Step-by-step explanation:

For this problem you are supposed to use a calculator that allows you to do an exponential regression. There are many tools that can help you with that, depending on what your instructors has assigned for your class.

I am showing you the results of a graphing tool I use, and which after entering the x-values and the y-values in independent "List" forms, when I request the exponential regression to fit the data, I get what you can see in the attached image.

Notice that the exponential of best fit with my calculator comes in the form:

$y=A\,e^{k\, x}$

with optimized parameters:

$A \approx 6.6114\,\,\,and\,\,\, k=0.4378321$

Notice as well that since:

$e^{0.4378321} \approx 1.5490$

the exponential best fit can also be written:

$y=6.611403\,\,*\,e^{0.4378321\, x}=6.611403\,*\,1.549^{\,x}$

and this expression is very close to the last option shown in your list of possible answers

8 0

3 years ago

A principal of $2000 is invested at 6% Interest, compounded annually. How much will the investment be worth after 11 years

scoundrel [369]

Answer:

A=3797 dollars

Step-by-step explanation:

A=P(1+r)^t t=time period, r is the rate, P is the principal

A=2000(1+0.06)^11

A=3797 dollars

4 0

3 years ago

Perimeter of a rectangle is 15x+17y if the length is 7/2x+7y then find the width of the rectangle

bogdanovich [222]

The perimeter of a rectangle is given by the formula,

$P=2l+2w$

We substitute,

$P=15x+17y$

and

$l=\frac{7}{2}x+7y$

into the above formula to obtain the expression,

$15x+17y=2(\frac{7}{2}x+7y)+2w$

$15x+17y=7x+14y+2w$

We now group the x and y terms on the Left Hand Side of the equation to get.

$15x-7x+17y-14y=2w$

$8x+7y=2w$

We now divide through by 2 to get,

$4x+\frac{7}{2}y=w$

Therefore the width of the rectangle is

$4x+\frac{7}{2}y$

8 0

3 years ago

Write each ratio as a fraction in lowest terms. 8 to 9

3241004551 [841]

Answer:

8/17 and 9/17

Step-by-step explanation:

8:9

both add up to 17

so it can be 8/17 or 9 but it cannot be simplified unless if you want them both as a mixed number which is

8/17 as a mixed number is 2 1/17

9/17 as a mixed number is 1 8/17

8 0

3 years ago

What is the unit rate price to the nearest cent of a 33-ounce bottle of juice that sells for $2.99?

marissa [1.9K]

Answer:

$0.09.

Step-by-step explanation:

2.99/33

= $0.0906

7 0

3 years ago