a. A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and other features. The distribution of the number of months in service for the fleet of cars is bell-shaped and has a mean of 45 months and a standard deviation of 3 months. Using the empirical rule (as presented in the book), what is the approximate percentage of cars that remain in service between 48 and 51 months?b. The physical plant at the main campus of a large state university recieves daily requests to replace fluorescent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a mean of 64 and a standard deviation of 7. Using the empirical rule (as presented in the book), what is the approximate percentage of lightbulb replacement requests numbering between 57 and 64?

Answers

Answer 1

In this case

[tex]\begin{gathered} 48=45+3 \\ 51=45+2(3) \end{gathered}[/tex]

Therefore, the percentage that lies between 45 and 48 is given by

[tex]\frac{68}{2}=34\text{ \%}[/tex]

And, the percentage that lies between 45 and 51 is given by

[tex]\frac{68}{2}=34\text{ \%}[/tex]


Related Questions

You deposit $400 into a savings account that earns interest annually. The function g(x) = 400(1.05)x can be used to find the amount of money in the savings account, g(x), after x years. What is the range of the function in the context of the problem?

[0, 400]
[0, ∞)
[400, ∞)

Answers

Answer:

Step-by-step explanation:

The constant percent rate of change in the case of a deposit of $400 into a savings account is compounded annually.  

With an example, what is compound interest?

When you add the interest you have already earned back into your principal balance, you are earning compound interest, which increases your profits.

Consider that you have $1,000 in a savings account earning 5% interest annually. If you made $50 in the first year, your new balance would be $1,050.

Principal - $400

rate of interest is compounded annually

g(x) =  400( 1.03)ˣ equation 1.

Formula used

A = P( 1 + r )ⁿ

here n = x

Solution:

Putting the value of n, and principal in the formula

A = P( 1 + r )ⁿ ................... equation 2

now comparing both equation 1 and equation 2,

400( 1.05)ˣ =  400( 1 + r )ˣ

( 1.05)ˣ = ( 1 + r  )ˣ

1.05 = 1 + r

r = 1.05 - 1

r = 0.05

r % = 0.05 × 100

r % = 5 %

thus, the constant percent rate of change =  5 %

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9 - 6 - 19 c) y - 12 OC p = b) y 24 c) = 9

Answers

x=70, y= -50 and x=80

1) Let's solve each equation, plugging in the given value for x

y=5x -300

a) y=50

y=5x -300 Plug y=50

50=5x -300 Add 300 to both sides

50+300=5x

350 = 5x Divide both sides by 5

x=70

b) x = 50

y=5x -300 Plug x=50

y=5(50) -300 Distribute the factor

y= 250 -300

y= -50

c) y=100

y=5x -300 Plug y=100

100 = 5x -300 Add 300 to both sides

400 = 5x

x =80

Hence, the answer is

x=70, y= -50 and x=80

Bell Ringer -- Find the distance of each side of the triangle: A(-10, 6) B(-6, 9) C(-6, 6)

Answers

Answer:

It is c) (-6, 6)

Simplify the following sum of polynomials completely ( - 12s raise to power 2 + 10s - 3) + ( 2s raise to power 2 - 12s - 2)

Answers

ANSWER

[tex]-10s^2-2s-5[/tex]

EXPLANATION

Given

[tex]\mleft(-12s^2+10s-3\mright)+\mleft(2s^2-12s-2\mright)[/tex]

removing the brackets, we have;

[tex]-12s^2+10s-3+2s^2-12s-2[/tex]

collecting like terms, we have

[tex]\begin{gathered} -12s^2+2s^2+10s-12s-3-2 \\ \end{gathered}[/tex]

adding similar terms, we have;

[tex]-10s^2-2s-5[/tex]

The solution is

[tex]-10s^2-2s-5[/tex]

Find the values of x and y

Answers

Since the "x" values are vertical angles, and so are the "y" values, you must make them equal. If this is confusing, look at steps below (The order of solving the "x" or "y" values don't matter. I will write both ways down (in point form --> [tex](x,y)[/tex] and as just "x=..." "y=..."

First step is to make the "y" values equal each other

[tex]5y = 7y-34\\-2y = -34\\2y = 34\\\\y=17[/tex]

Next to solve make the "x" values equal each other

[tex]8x+7 = 9x-4\\-x = -11\\x = 11[/tex]

Final Answer:

[tex](11,17)[/tex]

x = 11; y = 17

Hope this helps :)

The force of gravity is 6 times greater on the earth than it is on the moon. What is the weight of a 150-pound man on the moon?

Answers

The force of gravity on the Earth is equal to 9.8m/s².

Now, if the force of gravity on the moon is 6 times lesser than Earth's gravity.

Then,

The weight of a 150-pound man on the moon is:

150-pound/ 6

= 25-pounds

Hence, the weight of the man is 25-pounds

It is question 16 pls help

Answers

Answer: yes it is 16 i did my work let me know if you want me to show my work

Step-by-step explanation:

Consider the following relation: (1,12) ,(3, 8) , (3, 11) , (6, 9) , (7, 11) . Whichordered pair could be removed so thatthe relation is a function?Group of answer choices

Answers

Answer: Rajesh Kumar

Step-by-step explanation I took the wok to poland

Starting at 0 on a number line, a point is moved 21 units, then 53 units, then 721 units, and finally negative-50 units. Where has the point moved to?

Answers

Given

Starting at 0 on a number line, a point is moved 21 units, then 53 units, then 721 units, and finally negative-50 units.

To find:

Where has the point moved to?

Explanation:

It is given that,

Starting at 0 on a number line, a point is moved 21 units, then 53 units, then 721 units, and finally negative-50 units.

That implies,

Since starting at 0 on a number line, a point is moved 21 units.

Then,

[tex]0+21=21[/tex]

Also, then 53 units.

Then,

[tex]21+53=74[/tex]

Also, then 721 units.

Then,

[tex]74+721=795[/tex]

And, finally negative-50 units.

Then,

[tex]\begin{gathered} 795+(-50)=795-50 \\ =745 \end{gathered}[/tex]

Hence, the point is moved to 745.

find the value or measure. Assume all lines that appear to be tangent are tangent. mPM=

Answers

Segments that crosses around a circle

MN ^2 = OP • ON

mm

then 59° = (

5. What is the range of the graph?8all real numbers{y 1-1 sys1)(XI-15x51){x | xs-1 or x 21)

Answers

The correct option is option D

For more comprehension,

Option D is :

[tex]undefined[/tex]

Consider the following word problem:Two planes, which are 1180 miles apart, fly toward each other. Their speeds differ by 40 mph. If they pass each other in 2 hours,what is the speed of each?Step 1 of 2: Use the variable x to set up an equation to solve the given problem. Set up the equation, but do not take steps to solve it.

Answers

So we have two planes flying toward each other. Let's use v for the speed of the slower plane. Then the speed of the faster plane is v+40. If we pass to the reference system of the slower plane we have that its speed is 0 and the speed of the other plane is v+v+40=2v+40. So basically we have a problem where one of the planes is stationary whereas the other approaches at 2v+40mph and it takes it 2 hours to travel 1180 miles. Remember that the speed is equal to the distance traveled divided by the time it took the plane to travel that distance. Then we get:

[tex]\begin{gathered} 2v+40\frac{mi}{h}=\frac{1180mi}{2h}=590\frac{mi}{h} \\ 2v=590\frac{mi}{h}-40\frac{mi}{h}=550\frac{mi}{h} \\ v=\frac{550\frac{mi}{h}}{2}=275\frac{mi}{h} \end{gathered}[/tex]

Then we get:

[tex]v+40\frac{mi}{h}=275\frac{mi}{h}+40\frac{mi}{h}=315\frac{mi}{h}[/tex]

Then the speeds of the planes are 275mph and 315mph.

Takashi is driving to his grandmother's house. he is driving at a constant speed and will not make any stops along the way. Takashi’s distance in miles from his grandmother’s house h hours after leaving can be described by equationA. Identify and interpret the independent variable? B. Identify and interpret the coefficient? C. Identify and interpret the constant term ?D. Identify and interpret the dependent variable?

Answers

Let's begin by listing out the information given to us:

To calculate Takashi's distance from his grandmother's house is given by the formula:

[tex]\begin{gathered} distance=speed\cdot time \\ h=v\cdot t \end{gathered}[/tex]

Independent variable refers to the variable that stands by itself and whose value is not affected by the other

Dependent variable refers to the variable whose value is affected by the value of another variable

A. The distance (h) does not change irrespective of Takashi's speed, hence it is the independent variable

B. The coefficient is the speed (v)

C. The constant is time (t)

D. The speed (v) changes with variation in time, hence it is the dependent variable

Look at the first Model It. In the first place-value chart, why is the thousandths column for the decimal 5.67 empty? ​

Answers

The thousandths column for the decimal 5.67 is empty because there's no thousandth value in the decimal.

What is a place value?

Place value is the value provided by a digit in a number based on its place in the number. For example, 7 hundreds or 700 is the place value of 7 in 3,743. Place value is the value provided by a digit in a number based on its place in the number.

In this case, the decimal that's given is illustrated as 5.67. It should be noted that 6 is the tenths value and 7 is the hundredth value. Therefore, there is no thousandth value. This is why it's empty.

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Hello I would like to know what is the answer to the question 3/4x 3 < 6

Answers

[tex]\begin{gathered} \frac{3}{4}x-3<6 \\ \frac{3}{4}x-3+3<6+3 \\ \frac{3}{4}x<9 \\ (\frac{4}{3})(\frac{3}{4}x)<9(\frac{4}{3}) \\ x<12 \\ \text{The solution is x<12} \end{gathered}[/tex]

The director of an alumni association for a small college wants to determine whether there is any type of relationship between an alum’s contribution (in dollars) and the number of years the alum has been out of school. The data follow.

Answers

[tex]\begin{gathered} \hat{y}=bX+a \\ so\colon \\ \hat{y}=-50.43919X+453.17568 \end{gathered}[/tex]

----------------------------

b)

[tex]\begin{gathered} X=4 \\ \hat{y}(4)=-50.43919(4)+453.17568 \\ \hat{y}(4)=-201.75676+453.17568 \\ \hat{y}(4)=251.41892 \end{gathered}[/tex]

You and 2
2
friends have a job cleaning houses. You split the total money you make so that you each get the same amount. On the first day, you earn $93
$
93
. The second day, you earn $75
$
75
. The third day, you earn $108
$
108
. How much money do you each get for 3
3
days of work?

Answers

The amount of money that each person would get for the three days of work is $92.

How much would each person get?

The first step is to add all the money earned on the three days together. Addition is the process of determining the sum of two or more values.

Total amount earned in the 3 days = amount earned on the first day + amount earned on the second day + amount earned on the third day

= $93 + $75 +$108  =$276

The next step is to divide the total amount of money earned in the three days by the total number of people that would share the money. Division is the process of determining the quotient of a number.

The amount of money gotten by each person = total earnings / total number of people

$276 / 3 = $92

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Find the sum of the first 7 terms of the following sequence. Round to the nearest hundredth if necessary.5,−2,45,...5,−2, 54 ,...Sum of a finite geometric series:Sum of a finite geometric series:Sn=a1−a1rn1−rS n = 1−ra 1 −a 1 r n

Answers

Solution:

Given:

[tex]5,-2,\frac{4}{5},\ldots[/tex]

To get the sum of the first 7 terms, the formula below is used;

[tex]S_n=\frac{a_1-a_1r^n}{1-r}[/tex]

where;

[tex]\begin{gathered} n=7 \\ a_1\text{ is the first term = 5} \\ r\text{ is the co}mmon\text{ ratio=}\frac{-2}{5} \end{gathered}[/tex]

Hence,

[tex]\begin{gathered} S_n=\frac{a_1-a_1r^n}{1-r} \\ S_7=\frac{5-5(-\frac{2}{5})^7}{1-(-\frac{2}{5})} \\ S_7=\frac{5-5(-0.4)^7}{1+\frac{2}{5}} \\ S_7=\frac{5-5(-0.0016384)}{1+0.4} \\ S_7=\frac{5+0.008192}{1.4} \\ S_7=\frac{5.008192}{1.4} \\ S_7=3.57728 \end{gathered}[/tex]

Therefore, the sum of the first 7 terms is 3.57728

n=39; i = 0.039; PMT = $196; PV =?

Answers

Given the Present Value (PV) formula

[tex]PV=PMT\times\frac{1-(\frac{1}{(1+i)^n})}{i}[/tex]

Write out the parameters

[tex]\begin{gathered} PV=\text{?} \\ n=39 \\ i=0.039 \\ \text{PMT=\$196} \end{gathered}[/tex]

Substitute the following values in the present value formula to find the PV

[tex]PV=196\times\frac{1-(\frac{1}{(1+0.039)^{39}})}{0.039}[/tex][tex]PV=196\times\frac{1-0.2249021697}{0.039}[/tex][tex]PV=196\times\frac{0.7750978303}{0.039}[/tex][tex]\begin{gathered} PV=196\times19.87430334 \\ PV\approx3895.36 \end{gathered}[/tex]

Hence, the Present Value (PV) is approximately $3895.36

A father is buying cheeseburgers for his children. Each cheeseburgercosts $3.50. He spends $17.50 on cheeseburgers. Which equation canyou use to determine how many cheeseburgers he bought?O 17.50 = 3.50cO 3.50 = 17.500O 3.50 + 17.50 =cO 17.50 -3.50 = C« PreviousNext

Answers

Each cheese burger costs $3.50

c reprsents the number of cheese burgers

$17.50 is the total cost spent on c cheeseburgers

If you multiply the value of each cheeseburger by the number bought, you'll obtain the total cost:

3.50c=17.50

The correct option is number 1

the table below shows changes in the population densities of the zebra and you knew I'd muscles from 1991 to 2015, in six-year intervals.1. based on the data shown in the table calculate the percent change in the population density of zebra mussels from 1997 to 2003

Answers

The table below shows changes in the population densities of the zebra and you knew I'd muscles from 1991 to 2015, in six-year intervals.



1. Based on the data shown in the table calculate the percent change in the population density of zebra mussels from 1997 to 2003 ​

_____________________

1997 (3 250)

2003 (2 500)

Percentage change= 100 *(new value- old value)/old value

Percentage change = 100 *(2500- 3250)/ 3250 = 100* (-0.2308)

Percentage change = -23.08%

__________________________________

Answer

The percent change in the population density of zebra mussels from 1997 to 2003 ​ is -23.08%

There was a decrease of 23. 08%

a triangle with an area of 8 in^2 is dilated by a factor of 3. the area of the dilated triangle is ___ in^2(no image included)

Answers

we have:

[tex]A=\frac{1}{2}(b\times3)(h\times3)=\frac{1}{2}(9bh)=\frac{9}{2}bh[/tex]

therefore:

[tex]A=72[/tex]

answer: 72 in^2

Triangle ABC is similar to triangle DEF. Find the measure of side DE. Round youranswer to the nearest tenth if necessary.C7BF27E15DAD

Answers

Given:

Triangle ABC is similar to triangle DEF.

[tex]\frac{DE}{AB}=\frac{EF}{BC}[/tex][tex]\begin{gathered} \frac{DE}{15}=\frac{27}{7} \\ DE=\frac{27}{7}\times15 \\ DE=57.9 \end{gathered}[/tex]

Suppose you open a bank account and deposit $50. Then, every month you deposit $20. Write anequation that relates the total number of dollars deposited, T, and the month, m.Which equation below relates the total number of dollars deposited, T, and the month, m?

Answers

Let:

T = Total number of dollars deposited

m = Number of months

b = Initial deposit

So:

[tex]\begin{gathered} T(m)=20m+b \\ where \\ b=50 \\ so\colon \\ T(m)=20m+50 \end{gathered}[/tex]

Operations in Scientific NotationWrite two numbers in scientificnotationFind their sum, difference, product& quotient

Answers

Solution:

Let the two numbers be

[tex]20\text{ and 10}[/tex]

In scientific notation, the numbers are

[tex]\begin{gathered} 20=2\times10^1 \\ 10=1\times10^1 \end{gathered}[/tex]

The sum of the numbers will be

[tex]=(2\times10^1)+(1\times10^1)=10^1(2+1)=10^1(3)=3\times10^1[/tex]

Hence, the sum is

[tex]3\times10^1[/tex]

The difference between the two numbers will be

[tex]=(2\times10^1)-(1\times10^1)=10^1(2-1)=10^1(1)=1\times10^1[/tex]

Hence, the difference is

[tex]1\times10^1[/tex]

The product of the numbers will be

[tex]=(2\times10^1)\cdot(1\times10^1)=(2\times1)(10^{1+1})=2(10^2)=2\times10^2[/tex]

Hence, the product is

[tex]2\times10^2[/tex]

The quotient of the numbers will be

[tex]=\frac{2\times10^1}{1\times10^1}=\frac{2}{1}\times(10^{1-1})=2(10^0)=2\times10^0[/tex]

Hence, the quotient is

[tex]2\times10^0[/tex]

5 1/7 * 4 2/3 equals

Answers

We have to solve this operation with mixed numbers.

We can solve this applying the distributive property or by converting the mixed numbers into fractions.

We will solve this converting the numbers into fractions:

[tex]\begin{gathered} (5+\frac{1}{7})\cdot(4+\frac{2}{3}) \\ \frac{5\cdot7+1}{7}\cdot\frac{4\cdot3+2}{3} \\ \frac{35+1}{7}\cdot\frac{12+2}{3} \\ \frac{36}{7}\cdot\frac{14}{3} \\ \frac{36}{3}\cdot\frac{14}{7} \\ 12\cdot2 \\ 24 \end{gathered}[/tex]

Answer: 24

I will attach a picture to this question so you can understand it better.

Answers

Here are the given information:

1. 7 red beads for every 4 blue beads

2. total of 44 beads (red and blue)

Find: the number of red beads

Solution:

We can solve this in two ways. We can solve this using proportion or we can solve this by counting.

Let's start counting first. Let's say 7 red beads and 4 blue beads is 1 set. So, for every set, we already have 7 + 4 = 11 beads in total.

First set = 7 red bead + 4 blue beads = 11 beads

Second set = 7 red bead + 4 blue beads = 11 beads

Third set = 7 red bead + 4 blue beads = 11 beads

Fourth set = 7 red bead + 4 blue beads = 11 beads

If we add all the 4 sets, we have a total of 44 beads. If we add all the RED beads only, we get 7 red beads x 4 sets = 28 red beads.

Therefore, Lily used 28 red beads.

Now, using proportion, we can have this equation:

[tex]\frac{7\text{red beads}}{4\text{blue bead}}=\frac{x\text{ red beads}}{(44-x\text{ red)blue beads}}[/tex]

where x = the total number of red beads and we got 44 - x as the number of blue beads.

The next thing that we need to do here is to solve for x.

1. To solve for x, do cross multiplication first.

[tex]7(44-x)=4x[/tex]

2. Multiply 7 to the numbers inside the parenthesis.

[tex]308-7x=4x[/tex]

3. Add 7x on both sides of the equation.

[tex]\begin{gathered} 308-7x+7x=4x+7x \\ 308=11x \end{gathered}[/tex]

4. Lastly, divide both sides by 11.

[tex]\begin{gathered} \frac{308}{11}=\frac{11x}{11} \\ 28=x \end{gathered}[/tex]

As we can see, the value of x = 28. Lily used 28 red beads.

what is the value of the expression below when w=2 8w+10

Answers

Given the expression:

8w + 10

To find the value when w = 2, we need to substitute 2 for w in the expression.

Therfore, we have:

[tex]8(2)\text{ + 10}[/tex][tex]16\text{ + 10 = 26}[/tex]

Therefore, the value of the expression when w = 2 is 26

ANSWER:

26

A total of $6000 is invested: part at 5% and the remainder at 10%. How much is invested at each rate if the annual interest is $590

Answers

If a total of  $6000 is invested, part at 5% and remainder at 10%, then the amount invested on 10% interest is $5800 and the amount invested on 5% interest is $200

The total amount = $6000

Consider the amount invested on 10% interest as x

The amount invest on 5%  interest = (6000-x)

The the equation will be

x×(10/100) + (6000-x)(5/100) = 590

0.1x + 0.05(6000-x) = 590

0.1x + 300 - 0.05x = 590

0.05x +300 = 590

0.05x = 590-300

0.05x = 290

x = 290/0.05

x = $5800

The amount invested on 10% interest = $5800

The amount invested on 5% interest = 6000-5800

= $200

Hence, if a total of  $6000 is invested, part at 5% and remainder at 10%, then the amount invested on 10% interest is $5800 and the amount invested on 5% interest is $200

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hello can you help me with this question and this a homework assignment

Answers

Problem

Solution

For this case we can use the Cosine law and we have:

[tex]\cos (c)=\frac{a^2+b^2-c^2}{2ab}=\frac{35^2+56^2-33^2}{2\cdot35\cdot56}=0.8346938776[/tex][tex]\cos (b)=\frac{a^2+c^2-b^2}{2ac}=\frac{35^2+33^2-56^2}{2\cdot35\cdot33}=-0.356[/tex][tex]\cos (a)=\frac{c^2+b^2-a^2}{2cb}=\frac{33^2+56^2-35^2}{2\cdot33\cdot56}=0.8116883117[/tex]

And then we can find the angles with the arcos like this:

[tex]<\gamma=ar\cos (0.8346938776)=33.42[/tex][tex]<\beta=ar\cos (-0.356)=110.85[/tex][tex]<\alpha=ar\cos (0.8116883117)=35.74[/tex]

Can you see the new values for gamma and alfa

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