08/27/18

If the plane is 2200 feet above the ground and the jump lasts 85 ​seconds, how high above the ground was the skydiver 40 seconds after he​ jumped?
Calc word problem, solve using linear equation knowledge
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07/31/18

Integration
A particular moves on x-axis so that its position at time t is s(t)= (t2-t)/ t-1. at what value(s) of t the velocity is zero?
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09/18/17

Simplify the following expression. ​g(F(f(x)))
Let f(x)=x2-8, g(x)=x3, and F(x)=  1                                                x−1. Simplify the following expression.g(F(f(x)))
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02/07/17

calculus. How to integrate?
Evaluate the definite integral. The boundary is from 0 to √3/5   ∫ 1/(1+25x2) dx
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02/07/17

Calculus. How to solve integrals?
Find the indefinite integral   ∫ (e2x)/(25+e4x) dx
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11/14/16

Wht the word problem answer?
matthew made a bookcase,the cost of making the bookcase was $647.50.after the book case is sold, the shopkeeper recieves 15% of the selling price, Matthew make profit of $160 , calculate the... more
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11/14/16

There were 288 students attending a trip. 4 buses were filled, and 8 students traveled separately in a car. How many students were in each bus?
help please
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11/13/16

Bus. Calc dimensions
For reasons too complicated to explain, I need to create a rectangular orchid garden with an area of exactly 169 sq. ft. abutting my house so that the house itself forms the northern boundary. The... more
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04/28/16

Samantha needs to mix a 20% saline solution with a 40% saline solution to create 200 millileters of a 26% solution. How many millileters of each solution must S
Samantha needs to mix a 20% saline solution with a 40% saline solution to create 200 millileters of a 26% solution. How many millileters of each solution must Samantha use?
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04/28/16

a large box measures 4 ft by 7 ft by 3 ft. Find the volume of the box. Convert your answer to in3
  large box measures 4 ft by 7 ft by 3 ft. Find the volume of the box. Convert your answer to in3
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04/26/16

An airplane heads due west with an airspeed of 84 m/s. Because of a wind...
An airplane heads due west with an airspeed of 84 m/s. Because of a wind blowing due north, the speed of the airplane relative to the ground is 98 m/s. What is the wind speed? (ans: 50 m/s toward... more
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04/20/16

A particle moves on a line away from its initial position so that after t hours it is s = 2t^2 +3t miles from its initial position.
Find the average velocity of the particle over the interval [1, 4]. Include units in your answer.   Thank you!!
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04/18/16

Evaluate each limit, if it exsists.
Here are some examples of questions in the textbook that I don't know how to do for my test!   Evaluate each limit:   lim (x approaches 0) tanx/x     lim (x approaches 0)... more
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04/18/16

help me solve this problem?
suppose that when a particular drug is injected, the concentration is 1.5mg/mL. After 4 hours, the concentration has dropped to 0.25mg/mL. Solve for the decay constant, k, and write an exponential... more
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04/17/16

Which has more momentum? What momentum does the car possess relative to the truck and Track relative to the car?
A car weighing one ton is moving at 50 km/hr and a truck weighing two tons is moving at 25 km/hr. Both car and the truck are moving in opposite directions.
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04/12/16

would it take more .1m hcl or .1m h2so4 to neutralize 30 ml of naoh
i dont understand how to set up this problem and why? would it take more .1m hcl or .1m h2so4 to neutralize 30 ml of naoh
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03/29/16

Population Grows
A population grows exponentially according to the differential equation dp/dt =kp, where P is the population, t is time, and k is a positive constant. If P(0) = A, what is the time for the... more
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03/29/16

plane can fly 260 miles in the same time as it takes a car to go 100miles as the car travels 80mph slower find the speed of the plane.
I know the formula to use but am very confused on how to set it up
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03/29/16

How do I cancel
We have been using Miss Bev for a while now and we are very happy with her, but have decided it is time to discontinue our sessions.
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03/22/16

In the laboratory you dissolve 21.2 g of nickel(II) bromide in a volumetric flask and add water to a total volume of 375. mL. ??What is the molarity of the solu
college chemistry
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03/22/16

How many milliliters of an aqueous solution of 0.167 M potassium nitrate is needed to obtain 12.0 grams of the salt?
college chemistry
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03/21/16

find the mass that was burned
C2H6 + O2→CO2 + H2O. The heat from this reaction vaporized 20 grams of water. What mass of C2H6 was burned?
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03/03/16

how to do this equation? I got it wrong?
Factor the following.2a^3b-18ab^3     isn't the GCF 2 and a?  
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02/25/16

at what rate is the supply changing?
Suppose the wholesale price of a certain brand of medium-sized eggs p (in dollars/carton) is related to the weekly supply x (in thousands of cartons) by the following equation.$ 625p^2 - x^2... more
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02/25/16

CALCULUS HELPPPP
A storage tank at a factory collects liquid waste and can be drained by opening a drainage valve at thebase of the tank. The depth, d(t), of fluid in the tank t hours after the valve is opened is... more
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