04/16/15

a trianglular pyramid / what is the surface area
a trianglular pyramid has a base with an area of 7 square centimeters and layeral faces with bases of 4 centimeters and height of 12 centimeters. what is the surface area of the pyramid
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04/16/15

College Algebra Question
The population of a certain town in the year 2000 was 250 million and the population growth rate is .55% per year. Use the population model P(t)=P0(t+r)t  to find the year when the population... more
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04/16/15

The relation between the cost of a certain gem and its weight is linear.
The relationship between the cost of a certain gem and its weight is linear. In looking at two gems, we find that one of the gems weighs 0.4 carat and costs $3549, while the other gem weighs 0.7... more
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04/16/15

To lower a fever of 107 degrees,ice packs are applied for 3 minutes and then removed for 15 minutes before being applied again. If each application of the ice p
To lower a fever of 107 degrees,ice packs are applied for 3 minutes and then removed for 15 minutes before being applied again. If each application of the ice pack lowers the fever by 3/4 of a... more
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04/16/15

machine shaped 2½inches 3¼inches and 5inches the triangle perimeter is
2½ 3¼ and 5inches wits the triangle perimeter
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04/16/15

Statistics help?
All, please see the below for your second assignment. Please be sure to include all work. Show your equations and step through the work in a clear and comprehensive way.Find the mean for the... more
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04/16/15

A rectangular Landscape element is being added to the pool complex to beautify the grounds.
If the length is 8 more than twice the width and the total area is 960 square feet, find the length and width of the rectangular landscape element. Hint: Follow the same process as problems one... more
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04/16/15

We have solved equations of the form ax +b=cx+d
a.) give a specfic example of an equation of this form that has exactly one solution (ie specific a,b,c,and d values)   b.) suppose our equation has the form ax +b= 2x-5 i) if this has... more
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04/15/15

Suppose a polygon is dilated by a scale factor of k. Write an expression for the ratio of the perimeters. Then, write expression to represent ratio of areas.
 This is a dilation and proportion problem. Please help!!! I really don't get this.
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04/15/15

the aerodynamic covering on a bicycle increases a cyclist's average speed by 10 miles per hour you time for a 75 mile trip is reduced by 2 hours
Determine the average speed using the aerodynamic covering
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04/15/15

Please help, and step by step
Systolic blood pressure is the higher number in a blood pressure reading. It is measured as the heart muscle contacts. Heather was with her grandfather when he had his blook pressure checked. The... more
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04/15/15

From a sample of 400 people, 150 are left handed. Find the experimental probability of being left handed
experimental probability 
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04/15/15

Math exercise
The population of a country has a growth rate of 3%. The government wants to reduce the growth rate to 2%. In 1995, the population was 110 million. Find the population in 2020 if: (a) the... more
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04/15/15

Solve a Formula.
A jet flew from Point X to Point Y at an average speed of 280 mph. Because of head winds, the jet averaged only 260 mph on the return trip. The return trip took 10 minutes longer than the original... more
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04/15/15

Math problem
Find the exponential function that passes through the points (0,4) and (2,100).
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04/15/15

Danny sold n tickets for Ben Franklin Class Play in Mrs. Reilly’s Class.cont below
Danny sold n tickets for Ben Franklin Class Play in Mrs. Reilly’s Class. KyLee also sold tickets for the Ben Franklin Class Play. The number of tickets KyLee sold, k, is shown below by the... more
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04/15/15

What is the probability of a student passing the exam (grade of 60, 80, or 100) if she guesses the answer for each question?
Suppose that a multiple choice exam has five questions, each of which is worth twenty points and each of which has four possible answers. Suppose that each question has exactly one correct answer... more
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04/15/15

5s=9/10 this is the equation so what is the s
Ar regular pentagon has a perimeter of 9/10 meter. The equation 5s = 9/10 represents the lenth of each side of the pentagon. How is this equation solved for s?
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04/15/15

Conditional Probabilites - What is the probability a candidate will get the job?
To get a job at a government agency, a candidate needs to pass a written exam, an oral exam, and an interview. Suppose the probabilities of passing the written exam, the oral exam, and the... more
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04/15/15

I have to solve the linear system. What is the linear system when y=3/4x+8 and 4y=3x+4
Solve the Linear system y=3/4x+8 4y+3x+4
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04/15/15

A rowing team rowed their boat 12mi upstream in 1 and 3/4 hours. They made the return trip downstream with the same current in 1 hour. Find the rate of the curr
the question didn't let me finish but the last word is current and if someone can show me a simple way to do this I will appreciate it 
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04/15/15

Richard's apples
Richard has an unknown quantity of apples (A). Kayla also has some apples. She has 25% more apples than Richard   A) Write an expression that represents how many apples Kayla has   B) If... more
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04/15/15

system of equations.
A right triangle has a hypotenouse of 50 cm and an area of 600cm2. Find the lengths of the legs of the triangle.
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04/15/15

In order to make the probability of selecting a black marble 1/5, how many black marbles should be added to the jar?
A jar contains 23 marbles, 3 marbles are black and the rest are red. 
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04/15/15

A rectangle has perimeter 6m and the length of a diagonal is radical 5m. what are dimensions?
we are working on solving systems of equations and i have a really hard time with this because my teacher says not to follow the book. iIalso need to fined the answer as points like a graph and... more
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