3
Lauren bikes
5
4
miles in
7
hours. How long does it take her to travel one mile?

Answers

Answer 1
The answer is 7
Dkdoenoemwowmw

Related Questions

10) A survey of business students who had taken the Graduate Management Admission Test (GMAT) indicated that students who have spent at least five hours studying GMAT review guides have a probability of 0.85 of scoring above 400. Students who do not spend at least five hours reviewing have a probability of 0.65 of scoring above 400. It has been determined that 70% of the business students spent at least five hours reviewing for the test. a. Find the probability of scoring above 400. b. Find the probability that given a student scored above 400, he/she spent at least five hours reviewing for the test.

Answers

Answer:

0.79 ; 0.753

Step-by-step explanation:

Given that:

Students who have spent at least five hours studying GMAT review guides have a probability of 0.85 of scoring above 400 :

≥ 5 hours review = 0.85

Students who do not spend at least five hours reviewing have a probability of 0.65 of scoring above 400

< 5 hours = 0.65

70% (0.7) of business students spend atleast 5 hours review time

A.) probability of scoring above 400

(Proportion who spend atleast 5 hours review time * 0.85) + (Proportion who do not spend atleast 5 hours * 0.65)

Proportion who do not spend atleast 5 hours = (1 - proportion who spend atleast 5 hours) = 1 - 0.7 = 0.3

Hence,

P(scoring above 400) = (0.7 * 0.85) + (0.3 * 0.65) = 0.595 + 0.195

= 0.79

B.) probability that given a student scored above 400, he/she spent at least five hours reviewing for the test.

P(spent ≥5 hours review | score above 400) :

P(spent ≥5 hours review) / P(score > 400)

(0.7 * 0.85) / 0.79

0.595 / 0.79

= 0.753

find the gretest number which devded by 181 and 236 leave a remainder of 5 in each case​

Answers

Answer:

The greatest number is 11

Step-by-step explanation:

Given

Dividends: 181 and 236

Remainder: 5

Required

Determine a divisor that satisfies the above condition

Let the required divisor be represented with x.

Since a remainder of 5 is expected, then x can divide (181 - 5) and (236 - 5) without remainders.

So, we have:

[tex]181 - 5 = 176[/tex]

[tex]236 - 5 = 231[/tex]

Next, we calculate the GCF of 176 and 231

[tex]176 = 2 * 2 * 2 * 2 * 11[/tex]

[tex]231 = 3 * 7 * 11[/tex]

The greatest common factor, GCT is:

[tex]GCF = 11[/tex]

Hence, the required divisor is 11

VWXY is a parallelogram. Find the measure of XY and WY

Answers

Answer:

WY = 30

XZ = 10.5

Step-by-step explanation:

Paralellogram's diagonal's bisect eachother

Therefore,

[tex]n + 7 = 3 n[/tex]

Move the n over,

2n = 7

Divide both sides by 2,

n = 3.5

WY = 2(ZY) because definition of bisector

Simplify...

WY = 2(4n+1)

WY = 2(4(3.5)+1)

WY = 2(15)

WY = 30

You asked for XY, but the question asks for XZ, so I'm going to give XZ.

With n = 3.5 from above,

XZ = 3n

XZ = 3(3.5)

XZ = 10.5

The measure of XY and WY are; WY = 30 and XZ = 10.5

What is a parallelogram?

That quadrilateral in which opposite sides are parallel is called a parallelogram.

Thus, a parallelogram is always a quadrilateral but a quadrilateral can or cannot be a parallelogram.

Since Paralellogram's diagonal's bisect each other

Therefore,

2n = 7

Divide both sides by 2;

n = 3.5

WY = 2(ZY)

because definition of bisector

Simplify;

WY = 2(4n+1)

WY = 2(4(3.5)+1)

WY = 2(15)

WY = 30

we asked for XY,

With n = 3.5 from above,

XZ = 3n

XZ = 3(3.5)

XZ = 10.5

The measure of XY and WY are; WY = 30 and XZ = 10.5

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g In an experiment, 37 randomly selected drivers drove from Pontiac to Detroit at random times. The travel time for these drivers was 39.0 minutes on average with a standard deviation of 4.8 minutes. Calculate and interpret a 99.9% confidence interval for the mean travel time for all possible drivers traveling from Pontiac to Detroit.

Answers

Answer:

CI  = ( 36,6  ;  41,4 )

Step-by-step explanation:

CI = 99,9  %       α = 0,1 %      α = 0,001

We find z scre for α = 0,001 in z -table

z(s) = - 3,08

CI =  μ₀  ±  MOE          where    μ₀  = 39 min  and   MOE = z(s) * σ/√n

CI = 39  ±   3,08 * 4,8 / √37

CI = 39  ±   2,4315

CI  = ( 36,6  ;  41,4 )

Does anyone know the answer to this problem. If so please help.

Answers

It’s the 2nd option because both B and E intersect

a microscope has a scale of 250:1. What does this scale means?

Answers

Answer:- Things look 250 larger.

Answer:

2,500x.

Step-by-step explanation:

2. If a certain disease is found in 1 out of 12,000 people, what is the probability that there will be at least one person with that disease in a town of 24,000 people

Answers

Answer:

0.865

Step-by-step explanation:

Given that:

Disease is found in 1 out of 12000 people ; probability that disease is found in atleast one out of 24000 people

Using the binomial probability formula :

P(x = x) = nCx * p^x * (1 - p)^(n-x)

p = 1/ 12000 = 0.0000833333

n = 24000

P(x ≥ 1) = p(x = 1) + p(x =2) + ... + p(x = 24000)

In other to save computation time, we can employ the use of an online binomial probability calculator or a Ti-89 calculator :

The result is thus : 0.86467588659

P(x ≥ 1) = 0.865

i will give brainliest<3

Answers

Answer:

option A = 40(24) = option B = x (.1) where x is her gross sales

40(24) = x(.1)

40(24)/.1 = x = sales = $9600

Hope this helps....

Answer:1,920

Step-by-step explanation: First find the 24$ wage. which would be 960$. then you divide that by .5 which would equal

1920

Solve for m...
...
..

Answers

Answer: The answer is m=300.

Step-by-step explanation: Step 1. Simplify the both sides of the equation:

[tex]\frac{-1}{15}m=-20[/tex].

And step 2. Multiply the both sides by [tex]\frac{15}{(-1)}:[/tex]

[tex](\frac{15}{-1})*(\frac{-1}{15}m)=(\frac{15}{-1})*(-20).[/tex] I hoped this is very helpful, please mark me as brainliest, and happy new year!! :D

Solving for the value of m in the given equation, m / -15 = -20, will give us: m = 300.

How to Solve for a Variable in an Equation?

To solve for a variable in an equation, isolate the variable on one side of the equation by performing inverse operations (such as addition, subtraction, multiplication, or division) to both sides until the variable is left alone.

To solve for m in the equation m/-15 = -20, we can isolate m by multiplying both sides of the equation by -15 (the reciprocal of -1/15). This will cancel out the denominator on the left side and give us the value of m.

Step 1: Multiply both sides of the equation by -15:

(-15) * (m/-15) = (-15) * (-20)

Step 2: Simplify:

m = 300

Therefore, the value of m is 300.

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What is it
Simplify
5(6-3)+2

Answers

Answer:

Step-by-step explanation:

17

The correct answer is 17, you do what’s in parentheses first (6-3) = 3 then you would multiply bc the ( means to multiply. So multiply 5x3 =15 15 + 2= 17

An automobile assembly line operation has a scheduled mean completion time, , of minutes. The standard deviation of completion times is minutes. It is claimed that, under new management, the mean completion time has decreased. To test this claim, a random sample of completion times under new management was taken. The sample had a mean of minutes. Assume that the population is normally distributed. Can we support, at the level of significance, the claim that the mean completion time has decreased under new management

Answers

Answer:

Step-by-step explanation:

Here are the missing values;

Mean μ = 15.5 minutes

Standard deviation = 1.7 minutes

A Random sample of 90 completion

The sample mean = 15.4 minutes

Level of significance = 0.1

Then the following analysis can be made on the above study.

Firstly, the null hypothesis is [tex]\mathbf{H_o : \mu = 15.5}[/tex]

the alternative hypothesis is [tex]\mathbf{H_a: \mu < 15.5}[/tex]  

Since, the value is less than, then this is a one-tailed test.

The Z test statistics can be computed as:

[tex]Z = \dfrac{ \overline x - \mu }{\dfrac{\sigma}{\sqrt{n}} } \ \ \sim \ \ N(0.1)[/tex]

[tex]Z = \dfrac{ 15.4-15.5 }{\dfrac{1.7}{\sqrt{90}} }[/tex]

[tex]Z = \dfrac{ -0.1 }{\dfrac{1.7}{ 9.4868} }[/tex]

Z = −0.560

The critical value of Z at 0.1  level  of significance is:

[tex]Z_{0.1} = -1.28[/tex]

Decision Rule: We fail to reject the null hypothesis sInce -0.560 > -1.28

Conclusion: NO, there is no evidence to support the claim that the mean completion time has decreased. We conclude that the mean completion time remains at 15.5 minutes.

Solve the system.
x + 2y – 4z = 4
2x – y + 2z = 3
3x – 8z = -2

Enter answer as ordered triple.

(2,[?],[?])

Answers

From  second equation :

2x - y + 2z = 3

z = (3 + y - 2x)/2

Putting value of z in equation 1 and 3, we get :

x + 2y - 4( 3 + y - 2x )/2 = 4

x + 2y - 2( 3 + y - 2x ) = 4

x + 2y - 6 -2y +4x = 4

5x = 10

x = 2

Putting value of x in third equation, we get :

8z = 3( 2 ) + 2

z = 1

Putting value of x and z in equation 2, we get :

y = 2( x+z) - 3

y = 2( 1 + 2) - 3

y = 3

Therefore, the answer as an ordered triple is ( 2, 1, 3 ).

POSSIBLE POINTS : 13.33 If a wall has a diagonal beam holding it in place that is 12ft long and the height of the wall is 8ft and the base of the beam on the floor is 7ft from the wall is the wall perpendicular?

Answers

Answer:

Step-by-step explanation:

If the wall is perpendicular, then that means that this is a right triangle. We can find out if it is by using Pythagorean's Theorem and filling in the values for the sides. If the statement is true, then the triangle is right and the wall is perpendicular to the base.

[tex]a^2+b^2=c^2[/tex] and filling in:

[tex]7^2+8^2=12^2[/tex] Let's find out if this is true:

[tex]49+64=144[/tex] Is this true?

113 = 144

Definitely not true. So this is not a right triangle and the wall is not perpendicular to the floor.

A box contain five red balls, a ball is drawn at random, what is the possibility that the ball will be red?

Answers

Answer:

yes because it says it only has red balls it didn't say any other color or something

Please Help!!! :( I don't understand

Answers

Answer:

0.425

Step-by-step explanation:

40x2.5=100

17x2.5=42.5

So the fraction is 42.5/100 which is 0.425

HELP MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE!!!!!!!!!!!

What is a control group?
:((((((((((((((((((((((((((((

What is a control group?


A group that changes the variable

The group that applies the variable

The group that tests the variable

A test group where the variable is not changed or applied

Answers

Answer:

A scientific control is an experiment or observation designed to minimize the effects of variables other than the independent variable. This increases the reliability of the results, often through a comparison between control measurements and the other measurements.

A test group where the variable is not changed or applied

Which of the following letters have perpendicular line segments.
A E F H MNV X Z

Answers

Answer:

I think it's E, F, H

Step-by-step explanation:

Hope you got it.

Merry Christmas...

Simplify the expression:
9g - 9g

Answers

Answer:

0

Step-by-step explanation:

A social researcher is interested in the number of children in the households of City A that receive welfare. He does not have funding for a census nor access to official city records. How can the researcher accomplish his task using descriptive statistics tools?

Answers

Answer:

Descriptive Statistics is used to   collect, organize and  summarize sample data.

Step-by-step explanation:

Descriptive Statistics is used to   collect, organize and  summarize sample data.

First of all he will collect a sample or maybe samples. A sample is a subset of the data drawn from the population. Here it will be the number of children from different households.

Populations can be described by parameters . These parameters can be inferred on the sample parameters. For example the population mean ,  population variance can be estimated by sample mean and sample mean.

These variables can be further categorized as discrete.

Now he will apply various test to check whether the inferences drawn about the population are true or not.

Darell buys a model railroad set online for $224.62. If shipping and handling are an additional 16% of the price, how much shipping and handling will Darell pay? Round your answer to the nearest cent: $​

Answers

35.94
Sisieiekenducnfht hdendyc ok

16. If y varies directly as x, and x = 9 when y = 15, find y when x = 33?​

Answers

Answer:

y=55 when x is 33

Step-by-step explanation:

Use the direct variation formula:

[tex]\frac{y}{x} =k[/tex]  or [tex]\frac{y}{x} =\frac{y}{x}[/tex]

Insert the given values:

[tex]\frac{15}{9}=\frac{y}{33}[/tex]

To simplify the equation, cross multiply:

[tex]15(33)=9(y)\\\\495=9y[/tex]

Isolate the variable. Divide both sides by 9:

[tex]\frac{495}{9} =\frac{9y}{9} \\\\55=y[/tex]

Therefore, when x is 33, y is 55.

:Done

a company pays its employees and average hourly wage of 36.25 with a standard deviation of 6.50 more than 23.22 of 36 employees are randomly selected, what is the probability that their mean wage is more than 23.22

Answers

Answer:

P [ X > 23,22 ]  = 0,8798      or  P [ X > 23,22 ]  =  87,98 %

Step-by-step explanation:

P [ X > 23,22 ]  =  1  -  P [X ≤ 23,22 ]

P [X ≤ 23,22 ] =  ( X - μ₀ ) / σ /√n

P [X ≤ 23,22 ] = ( 23,22 - 36,25 )/ 6,50/√36

P [X ≤ 23,22 ] =  - 13,03 *6 / 6,50

P [X ≤ 23,22 ] = - 12,02        or       P [X ≤ 23,22 ] = 12,02 %

(note the - sign only mean that values on the left tail of the bell shape curve)

Then

P [ X > 23,22 ]  =  1  -  0,1202

P [ X > 23,22 ]  = 0,8798      or  P [ X > 23,22 ]  =  87,98 %

The figure shows the dimensions of the side of a house. Find the area of the side of the house.

Answers

Answer:

Answer is 75cm squared.

Step-by-step explanation:

10x15 = 150

divide by 2

final answer is 75.

Answer:

600

Step-by-step explanation:

A cereal manufacture has a machine that files the boxes. Boxes are labeled as 16 ounces, which is the target fill (x). The lawyers want to fill the boxes more to avoid lawsuits regarding under filling and the company president vetoes that plan, saying the company should be giving away less free cereal, not more. Her goal is to set the machine no higher than 16.2 ounces and have only 4% underweight boxes. The only way to accomplish this is to reduce the standard deviation. What standard deviation must the company achieve

Answers

Answer:

σ = 0,11

Step-by-step explanation:

We assume the boxes filling process follows a Normal Distribution, then

z(score) = ( X - μ ) /σ     or   z(score) = ( μ - X ) /σ  

depending of the tail of the curve ( as we are evaluating boxes below mean we need to use the second equation )

where   μ  and σ are the mean and the standard deviation of the population

As the goal is to have boxes with no higher than 16,2 ou and only  4% of underweight boxes

4%   is 0,04   that should be the area under the bell shape curve then from z table we find z(s)

z(s) = - 1,75

z(s)  = ( μ - X )/σ

- 1,75 = ( 16,2 - 16 ) / σ

σ = 0,2 / 1,75

σ = 0,11

In a recent survey of 1,700 Game Stop customers 884 of them responed that they play video games on their
personal computer. What percent of the customers surveyed responded that they play video games on their
personal computer?

Answers

Answer:

52% play video games on their personal computer.

Step-by-step explanation:

884/1700 = 52%

this has me a bit confused...can anyone help?

Answers

Answer:

x = 3b/2 + 3y/2

Step-by-step explanation:

Goal: Find x

To do that we must isolate x on one side of the equation.

2/3x - y = b

2/3x - y + y = b + y

2/3x = b + y

2/3x ÷ 2/3 = b + y ÷ 2/3

(When we divide fractions we multiply by its reciprocol.)

x = 3b/2 + 3y/2

I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!

Jess has 2 3/4 books to read for school. Jess read 1 1/4 books on Tuesday. How many more books does jess have to read

Answers

Answer:

1 1/2(simplified)

Step-by-step explanation:

subtracting 1 from 2 is one and then 1/4 from 3/4 which is 2/4 simplifying makes it 1/2

Answer:

23/4+11/4=23+11/4=34/4 more books.

Step-by-step explanation:

Please mark my answer as a brainliest. Please follow me. ❤❤❤❤

Skylar went on a road trip to New York. On the first day of her trip. she drove 656 miles in 8 hours. What unit rate did she travel in miles per hour?

Answers

656/8 = 82 mph hope this helps !

The figure is made up of a square and a rectangle. Find the area of the shaded region.

Answers

first we do

square is length 6 so base =6

10-6=4

the rectangle is 2 by 4

base=4

square is 6 by 6

rectangle is 4 by 2

split the triangles up

area of triangle=1/2base times height

rectangle triangle base=4

height=2, area=1/2 times 2 times 4=4

square triangle

flip 90 degrees clockwise so we have base=2

height=6

area=1/2 times 2 times 6=6

add

4+6=10

total area=10m^2

Yeah he got it right

The probability that a six sided number cube lands on a 5 is 1/6. Predict the number of times the cube will land on a 5 if the cube is tossed 72 times.

Answers

Answer:

[tex]1 \div 6 \times 72 = 12[/tex]

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The accountant for Crusoe Company is preparing the company's statement of cash flows for the fiscal year just ended. The following information is available: Retained earnings balance at the beginning of the year $ 132,000 Cash dividends declared for the year 52,000 Proceeds from the sale of equipment 87,000 Gain on the sale of equipment 8,200 Cash dividends payable at the beginning of the year 24,000 Cash dividends payable at the end of the year 27,200 Net income for the year 98,000 What is the ending balance for retained earnings The pressure on a 200-milliliter sample of CO2(g) at constant temperature is increased from 60 kPa to 120 kPa. What is the new volume of the gas? All Potter heads. What is your house and who's death was the most devastating? I'm a Gryffindor and I say Fred's death :( This word means to take inA) synthesizeB) releaseC) absorb D) produce When lady Macbeth says, " Gladis thou art, and Cawdor, and shalt be What thou art promised; yet do I fear thy nature. It is too full o'th milk of human kindness to catch the nearest way." We can assume that A) Macbeth drinks too much milk B) lady Macbeth is afraid of her husband C) Macbeth moved too slowly D) macBeth is really a kind man 1+1=???? PLEASE HELP ILL MARK BRAINLIEST 2. What is the slope of the line that passes through the points C(-2, 4) and D(1, -1) WILL GIVE BRAINIST!!!!! DONT ANSWER FOR POINTS OR YOU WILL GET REPORTED!In the space on the next page, copy and paste these three paragraphs, and then revise and edit them to make them sound more credible. Use the checklist on the last page of this worksheet to make sure that your revision addresses all factors of credibility.Many cities and towns these days have community gardens--places the city council sets aside for people to rent garden space and plant a few veggies or flowers. The question, though, is whether they are totally useless or not. 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The costs can far outweigh the benefits in small communities. Larger cities can make this work. They have more options for materials. They also have more people using the completed garden.The next important thing to look at is how the community keeps up the garden. Often community gardens require its renters to spend a certain amount of time weeding and watering the garden. While this might sound good in theory, my experience is that people rarely follow through. They usually start out doing a bang-up job in the spring during planting time, but then their lives get more and more swamped, so they disregards this commitment. If a city is largeenough to have someone on site. Maintenance is not as big of a deal. However, in my small community garden, no one is ever around. In fact, weeds are the reigning vegetable growing in our community garden. This makes our towns community garden a complete joke. Checklist for Improving CredibilityWhat personal or professional experience might this author include to make the argument seem more credible?How should the author include this information in the essay?What informal words should the author change to make the essay more credible?Which sentences should the author revise to vary sentence lengths and types?What colloquialisms and idioms need to be revised?What sentence fragments, run-ons, comma splices, and/or subject-verb agreementissues need to be fixed?Are all instances of its and its used correctly? 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