07/28/17

College Algebra
In a museum, the ratio of adults to children is 4 to 14. If there are 360 people in the museum, how many children are there?
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07/28/17

Same physics question, quick fix please answer
Need help answering P2, i know the answer to part 1. Im unsure how I work out P2. I got 21271.92W as my answer, because it is a car and my answer is in watts, does that mean it is incorrect.A car... more
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07/28/17

maths/physics question below, please answer
Need help answering P2, i know the answer to part 1. Im unsure how I work out P2.    A car of mass 1.5 tonnes is driving up a hill, the hill makes an angle of 10 degrees to thehorizontal, at a... more
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07/28/17

Machine Efficiency
A force of 455 N is exerted in pulling 15 m of rope using a pulley system to lift a 935 N object 5 m. What is the efficiency of the system?   ...What is the difference between Work in and Work... more
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07/28/17

physics question below, please help
A car of mass 1 tonne travelling at 50km/h crashes into a stationary car of mass 2 tonnes on an icy road. Neglecting any frictional forces and assuming that after the initial collision the cars are... more
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07/28/17

Alg 2 Word Problem
The volumes of two spheres differ by 800/3 π cubic meters and the lengths of their radii differ by 5 meters. Find the length of the radius of the smaller sphere. (V=4/3πr^3)   Starting review for... more
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07/28/17

camille went to a bank and requested the cashier to change her three 1000 bills. How many bills will she receive if she asks for?
camille went to a bank and requested the cashier to change her three 1000 bills. How many bills will she receive if she asks for?    a.) 20 bills     c.) 200 bills b.) 50 bills.    d.) 500 bills 
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07/28/17

An airplane flies 1764 miles into the wind for 14 hours. The return trip takes 9 hours. Find the speed of the airplane without a wind and the speed of the wind.
I really need help I'm stuck 
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07/27/17

Graph the linear equation x-2y=4 by finding the intercepts.
Graph the linear equation x-2y=4 by finding the intercepts.
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07/27/17

At what Kelvin temperature will the reaction proceed 3.00 times faster than it did at 339 K?
Help I'm struggling with this. A certain reaction has an activation energy of 29.83 kJ/mol. At what Kelvin temperature will the reaction proceed 3.00 times faster than it did at 339 K? 
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07/27/17

If gas prices are now $4.99 and they were up 14% from 6 months ago, how much were gas prices 6 months ago?
help please
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07/27/17

The population of a certain species of frog grows 16.1% every year. Suppose 84 frogs are released into a pond.
Construct an exponential model to predict the population of frogs Use your model to predict how many frogs there will be in 8 years.
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07/27/17

Evaluate the function f(x)=2x-5 and simplify at the indicated value of f(-3)
Inverse function   
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07/27/17

Conservation of Energy
A 45 kg student runs with a speed of 2.0 m/s off a horizontal ledge that is 5.0 above a swimming pool. Calculate the vertical speed of the student when she hits the water.   ...   Energy before... more
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07/27/17

According to the 2010 United States Census, the population of a town was 97259, roughly a 15% increase from 84573 in 2000.
Construct an exponential model to predict the town's population each decade. Use your model to predict the population of the town in 2050.
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07/27/17

A pulsar is a type of star. Among the fastest rotating stars known is a pulsar with radius 16km that is spinning at 716 revolution per second.
How many kilometers per hour is a particle on the equator of the star traveling? Round to the nearest kilometer per hour.   b) the speed of light is about 3*10^8 meters per secon. What percent of... more
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07/26/17

Find the measure of the three angles.
The largest angle of a triangle measures 7 degrees less than 6 times the measure of the smallest angle. The middle angle measures four times that of the smallest angle.
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07/26/17

How do you determine the molecular formula/chemical formula of a single element?
For example, Hydrogen is H2 and Oxygen is O2. How did we get the 2 subscripts for each? Thank you so much
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07/26/17

Triple a number, decreased by 20
Translate verbal phrase to a mathematicap expression using x as the variable
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07/26/17

Calculus differentiation applications
I have to make an open cylindrical out of 48 square feet of material. That is, this can will not have a top. What are the dimensions of the radius and height that will maximize the volume of the... more
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07/26/17

Geometry Help for Unit Review
(1) A tower has an observation deck about 330 m above ground level. About how far is it from the observation deck to the horizon knowing that the Earth's radius is 6400 km?   (2) What is the... more
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07/25/17

find the function F(X) that satisfies F"(X)=1, F'(0)=3, F(0)=4
find the function F(X) that satisfies F"(X)=1, F'(0)=3, F(0)=4.  
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07/25/17

Is it possible to solve a matrix by only having one row and one column of data?
Is it possible to solve a matrix by only having one row and one column of data?    For example:                                                      Consequences                              ... more
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07/25/17

What is the cost of 4.5kg of sugar at 80c per 500g
I don't understand on how to do this question is anyone willing to help  
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07/25/17

how do you solve sec(arccot(-1))
 need help solving this.
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