6,608 Answered Questions for the topic Word Problem

#### Physics, Energy Problems (confused!)

1) a 2000 kg rollercoaster starts from a height of 55 m and an initrial velocity of 8 m/s. When it reaches the bottom of the hill (height of zero), what is its velocity?2) For the rollercoaster...
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Word Problem Algebra 1

12/04/19

#### Santay could clean one fourth of his area in an hour by himself. Leticia could clean four fifths of her area in an hour by herself. When working together how long does it take?

12/04/19

#### algebra 1 word problem

12/02/19

#### Need help with this problem

Samantha invests a total of $28,500 in two accounts. The first account earned a rate of return of 11% (after one year). However, the second account suffered a 10% LOSS in the same time period. At...
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12/02/19

#### Precalculus Word Problem - 3 by 3 or 2 by 3 function

A total of $5000 is invested at 2%, 3% and 4%. The amount invested at 4% equals the total amount invested at 2% and 3%. The total interest for one years is $145. If possible, find the amount...
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11/27/19

#### Which of these two women is more likely to be the parent of two girls? Explain.

Professor Robertson and Professor Simpson are both mathematicians. Professor Robertson tells you that she has exactly two children, at least one of whom is a girl. Then Professor Simpson tells you...
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11/20/19

#### Linear equation word problem

Jasmine has been working to save money and wants to have an equation to model the amount of money in her bank account. She has been depositing $175 a month consistently, she doesn’t remember how...
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#### Fnet=ma Problems

1) a 500 kg car is travelling at 15 m/s and experiences a forward engine force of 2000N for 3 seconds. The combined frictional forces acting on the car are 600 N. What is the car's acceleration?2)...
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#### Fnet=Fma problems

1) a 500 kg car is travelling at 15 m/s and experiences a forward engine force of 2000N for 3 seconds. The combined frictional forces acting on the car are 600 N. What is the car's acceleration?2)...
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Word Problem Algebra

11/06/19

#### Laarnie can wash a volume of dirty clothes in 2 1/2 hours while Lyn can do the same job in 4hours. How long they finish the job by working together

Laarnie can wash a volume of dirty clothes in 2 1/2 hours while Lyn can do the same job in 4hours. How long they finish the job by working together

Word Problem

11/06/19

#### If I ride 7 miles in the morning and then I ride five times that in the afternoon how many miles did I ride

If I ride 7 miles in the morning and then I ride five times back in the afternoon how many miles did I ride

11/03/19

#### need help for Stat question

If sample data is such that for a one-tailed test of μ you can reject H0 at the 1% level of significance, can you always reject H0 for a two-tailed test at the same level of significance? Explain...
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11/03/19

#### Word problem help

Hi, what would be the best way to solve this word problem.Kyle took 2 hours to drive to work. Returning home, he traveled 30 mph faster and made it in one hour. What distance did he travel to get...
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Word Problem Amath100

11/02/19

#### Hard word problem flooring

Josh is finishing remodeling his home. The last step is the flooring. He has a room 17 ft length by 20ft width. He is trying to avoid the fireplace that protruding out from the wall in the room...
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10/31/19

#### I don't even know where to start

A bridge with a supporting parabolic arch spans 60 feet with a 30-ft wide road passing underneath the bridge. In order to have a minimum clearance of 16 feet at either edge of the roadway, what is...
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10/30/19

#### Finding exponential decay given half-life problem

The half-life of a certain radioactive substance is 10 years. Initially there are 100 grams of the substance. Let A(t) be the number of grams of the substance at time t years. Find each of the...
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10/30/19

#### Continuous compound problem

How long will it take for an investment of $1000.00 to grow to $6000.00 at an interest rate of 3% if interest is compounded a) 3 times per yearb) Continuously

#### Company A chargers $3.50 per month plus $0.15 per text. Company B charges $6.00 plus $0.10 per text. How many texts would make the two plans cost the same amount?

How would you set up the equation?

#### Projectile Motion

(Ignore air resistance) A man is riding in the back of a truck (facing forward) that is driving forward at a constant velocity of 30 mph. If he throws a ball straight upward so that it reachers a...
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10/25/19

#### I need help with this question

Blakes cell phone company charges him $20 plus $0.40 a minute. Steven’s cell phone company charges him $45 and $0.25 a minute. For how many minutes would Steven and Blake have to talk on their cell...
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#### Projectile Motion

1) A rifle is shot horizontally at a speed of 200m/s above flat ground. Compared to a bullet that is dropped at the same instant, the bullet that is shot will:a) take a longer time to reach the...
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