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3 years ago

11.Use the exponential regression equation that best fits the data

Mathematics

2 answers:

Marysya12 [62]3 years ago

6 0

Answer:

73.5 ....................

GarryVolchara [31]3 years ago

3 0

Answer:

B. 73.5

Step-by-step explanation:

Using Excel (you can use similar software or a scientific calculator) we get the figure attached. After adding the trend line, we get that the equation that best fits the data is:

y = 0.0034*e^(0.7129*x)

Replacing with x = 14 we get:

y = 0.0034*e^(0.7129*14)

y = 73.5

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3 years ago

What is the variance with the data 8 2 4 3 5

pashok25 [27]

Answer:

The variance is approximately equal to 5.3

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4 years ago

Mrs. Klein purchased a planter box that is in the shape of a rectangular prism. The volume is 118 ft3 and the base area is 112

marta [7]

We know that

[volume of a prism]=[area of a base]*height
height=[volume of a prism]/[area of a base]
height=[118]/[112]=59/56 ft

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3 years ago

Read 2 more answers

A math test has a total of 20 problems some problems are worth two points and some are worth three points the whole test is wort

kari74 [83]

Answer:

There were 12 questions worth 3 points

Step-by-step explanation:

Let x = 2 point questions

let y = 3 point questions

What we know:

x + y = 20 (questions)

so to solve for x we tweak our equation:

x = 20 - y

Now we need an equation to explain out question set up:

2x (2 point questions)

3y (2 point questions)

2x + 3y = 52 (52 being our total possible points)

Now we take our x = 20 - y and substitute it into our 2x + 3y = 52 equation.

2(20 - y) + 3y = 52

Next we distribute the 2 through the parenthesis:

40 - 2y + 3y = 52

Now, gather the like terms:

40 + y = 52

Subtract 40 from both sides:

y = 12

Revisit x + y = 20 and sub 12 in for Y:

x + 12 = 20

x = 8

8 2-point questions would be 16 points

12 3-point questions would be 36 points

16 + 36 = 52 (which matches the max value of our test)

4 0

4 years ago

A football field is 360 feet long. The titanic was 883 feet. About how many football fields long was the titanic? Write your ans

igomit [66]

Given:

The length of the football field = 360 feet

The length of the titanic = 883 feet

To find:

About how many football fields long was the titanic?

Solution:

We have,

Length of the football field = 360 feet

Length of the titanic = 883 feet

Now we need to divide the length of the titanic by length of the football field to find the number of football fields whose length is equal to the titanic.

$\text{Number of required football fields}=\dfrac{\text{Length of the titanic}}{\text{Length of the football field}}$

$\text{Number of required football fields}=\dfrac{883}{360}$

$\text{Number of required football fields}=2.452777...$

$\text{Number of required football fields}=2.452\overline{7}$

$\text{Number of required football fields}\approx 2$

Therefore, the answer in whole number is 2 and the answer in decimal is $2.452\overline{7}$ .

5 0

3 years ago