Gregg K.

01/05/17

Manny hiked 6 2/5 miles along a mountain trail. He stopped to climb a lookout tower 1/4 of the way along his hike. How many miles did manny hike before he stopp

Manny hiked 6 2/5 miles along a mountain trail. He stopped to climb a lookout tower 1/4 of the way along his hike. How many miles did manny hike before he stopped to climb the lookout tower?

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Word Problem Help

01/05/17

72 kids were asked if they were going to a play 12 said yes, the play sold 220 tickets how many students attend the school

I thought it was 270 but I was wrong

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Statistics

01/05/17

What is the probability that you will not buy again from this manufacturer?

A manufacturer of light bulbs says that its light bulb have a mean life of 700 hr and a standard deviation of 120 hr. You purchased 144 of these bulbs with the idea that you would purchase more if... more

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Statistics Question

01/05/17

Statistics question...help

Five people buy individual insurance policies. According to the research, the probability of each of these people not filing a claim for at least 5 years is .The probability that all 5 have not... more

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Math Word Problem

01/04/17

At a talent show, 3/5 of the acts were singing. One-third of the remaining acts were instrumental. See description!

At a talent show, 3/5 of the acts were singing. One-third of the remaining acts were instrumental. If 12 acts were instrumental, how many acts were in the talent show?

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Alegebra Homework

01/04/17

One number is 2 less than a number. Twice the second number is 11 less than 5 times the first. Find the two numbers

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Algebra Word Problem

01/04/17

Ratio of 8:9 if someone received $3,060

Jackson gave a sum of money to his daugather in the ratio 8 : 9. His daughter received $3,060. How much did Jackson gave to his daughte?

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Statistics

01/03/17

Given a normal distribution with a mean of 40, what is the standard deviation if 2.5% of the scores are below 30?

normal distributions and finding the standard deviation

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Algebra

01/03/17

through: (5, 2) and (0, 2)

(slope intercept form)

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Algebra

01/03/17

through: (-2, -4), slope = 4

(slope intercept form)

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Distributive Property

01/03/17

What is the distributive property of 8 x 17?

In 4th grade there is a lesson about distributive property, so there is a problem I do not understand. I have searched on google, and also other internet websites. I have not found any answers to... more

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Other

01/02/17

Mean Length

How can this be calculated? After a particular wet night ,12 worms surfaced on the lawn. Their lengths measured in cm, were 9.5, 9.5 , 11.2 , 10.6 , 9.9 , 11.1 , 10.9 , 9.8 , 10.1 , 10.2 , 10.9... more

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Answers •1

Other

01/02/17

Distribution

A distribution has a mean of 50 and a standard deviation of 12.If we assume the above distribution is bell-shaped and symmetric what percentage of the observations will be between 26 and 74?

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Algerbra 1 Honors Coodinate Algerbra

01/01/17

How do I work out this question about different values?

A group of 42 people go to an amusement park. The admission fee for adults is $16. The admission fee for children is $12 . The group spent $568 to get into the park . How many adults and children... more

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Algebra

12/31/16

Mixture Problem

How many gallons of gasoline that is 8% ethanol must be added to 2,000 gallons of gasoline with no ethanol to get a mixture that is 6% ethanol?

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Math Problem Fast

12/31/16

Math easy question

A swimmer completes 8 laps in 1/4hour. What is the swimmers rate per hour

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Physics

12/31/16

I jumped on a train ride that lasted 4.5 hours and we traveled 360 miles. Calculate the velocity in miles/hour.

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Physics

12/31/16

In 10 hours, I drove 524 miles. Calculate the velocity in miles/hour.

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Calculus

12/29/16

Volume of revolution

Hi, for some of the problems Im doing, I have to rewrite the y function in terms of x. So for example, y=x^3 about the y axis. The only thing I dont get is the rewritting it into x. The solution is... more

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Probability Problem Solving Word Problems

12/29/16

What is the expected number of greengreen balls in the sample

Suppose three balls are drawn (with replacement) from a bag that contains 4 red balls and 6 green balls. The number of green balls is counted. What is the expected number of greengreen balls in the... more

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Probability Expected Value

12/29/16

What are the expected winnings?

A raffle offers a first prize of $1000, 2 second prizes of $300, and 20 third prizes of $10 each. If 20000 tickets are sold at 75 cents each, find the expected winnings for a person buying 1 ticket.

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Statistics Probability Fair

12/29/16

Question 2

If two fair dice are rolled, find the probability of the following result.A double, given that the sum was 11.

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Percentages

12/27/16

Charger on sale

A phone charger is marked down 33% off the original price. The original price was $39.59. What is the sales price of the charger before sales tax?

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Answers •1

Math Word Problem

12/25/16

Determine whether the sequence x+2, 2x+2, 3x+2 ... is arithmetic. if so, find the common difference. If not, explain your reasoning.

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Answers •1

Other

12/25/16

Derivatives

What is dy/dx if y = (4x^2)/(8+0.2x) ?

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Answers •3

Manny hiked 6 2/5 miles along a mountain trail. He stopped to climb a lookout tower 1/4 of the way along his hike. How many miles did manny hike before he stopp

72 kids were asked if they were going to a play 12 said yes, the play sold 220 tickets how many students attend the school

What is the probability that you will not buy again from this manufacturer?