12/02/14

by what percentage did the actual cost exceed the initial estimate
A library expansion, begun in 2003 was expected to cost $107million. By 2006, library officials estimate the cost would be $41 million over budget. By what percentage did the actual cost exceed the... more
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12/02/14

Give the slope of each line: x=19 y=2
Directions are to find the slope of the line and then determine whether the two lines are parallel, perpendicular or neither.
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12/02/14

equation word problem
A company manufactures small flash drives for home computers. It knows from experience that the number of flash drives it can sell each day, x, is related to the price p per flash drive by the... more
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12/02/14

Find a lowest-degree polynomial
Find a lowest-degree polynomial with real coefficients and leading coefficient 1, having zeros 1/2,-1, and 2/3.
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12/02/14

a job for one person could be filled by a man. it could also be filled by a woman. Are these events mutually exclusive? why or why not
a job for one person could be filled by a man. it could also be filled by a woman. Are these events mutually exclusive? why or why not
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12/02/14

system shutdown once every 75 days on average. probability of a least one shutdown in the next year
A plant pollution-control system shutdown once every 75 days on average. What is the probability of a least one shutdown in the next year? Give the answer to one decimal place.
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12/02/14

the numbers on two consecutively number gym lockers have a sum of 129. what are the locker numbers?
the numbers on two consecutively numbered gym lockers have a sum of 129. What are the locker numbers?
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12/02/14

Missed this day of class & have no idea how to solve :(
9x=1/cubed root 3   7x-2/6=square root 7
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12/02/14

Word Problem
A hotel has 150 rooms. A room with additional services costs $80 per night, and one without additional services costs $60 per night. On a night when the hotel is completely occupied, the total... more
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12/02/14

How much of each type should be used to make a 23 pound mixture that sells for $5.62 per pound?
The Nutty Professor sells cashews for $6.30 per pound and Brazil nuts for $5.10 per pound. How much of each type should be used to make a 23 pound mixture that sells for $5.62 per pound?Round... more
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12/02/14

How much of the 85% alcohol mixture and pure water will you need to obtain the desired solution?
You need 255 mL of a 45% alcohol solution. On hand, you have a 85% alcohol mixture. How much of the 85% alcohol mixture and pure water will you need to obtain the desired solution?
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12/02/14

How many kilograms of each kind of chocolate must they use?
A candy distributor needs to mix a 20% fat-content chocolate with a 50% fat-content chocolate to create 100 kilograms of a 38% fat-content chocolate. How many kilograms of each kind of chocolate... more
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12/02/14

Parabola and quadratic function word problem
The shape of a suspension bridge can be turned upside down to create a bridge where each supporting truss is in the shape of a parabola. The truss of the bridge shown in the figure is 45 feet high... more
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12/02/14

compound interest.
$15, 000 is invested for 1 year. find the future value based on simple interest of 8% and 8% interest compounded every 6 months. then find the difference between the two.
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12/01/14

Use common logarithms or natural logarithms
Use common logarithms or natural logarithms to evaluate to four decimal places.    logπ15                    (use the change-of-base property) 
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12/01/14

Write the slope-intercept form of the equation of the line described.
Through: (4,0), parallel to y=5
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12/01/14

Find the equation of the parabolic function that passes through the points (1,-11) (4,10) and (-3,17)
I need help finding the equation, not really sure where to start exactly...is there a formula to find the slope of a parabola
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12/01/14

i am thinking of a number. i multiplied my number by 3, subtracted8, doubled the results, and added 14.Then i added on 50% of what i had and subtracted 11.
i divided by 5. After all that, i was left with 8.what number did i start with
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12/01/14

write an equation
Jeremy runs 7 mile per week and increases his distance by 1 mile each week .Tony runs 3 miles per week and increases his distance by 2 miles each week .In how many weeks will Jeremy and Tony be... more
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12/01/14

prove that sin2X/secX=2cos^2X/cscX
Also if you can do    Prove that sin (x+y) cos (x-y)= sinX/secX + cosY/cscY
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12/01/14

Question about algebra
A ball is dropped from a cliff that is 448 feet high. The distance S (in feet) above the ground after t seconds is given by the formula S=448-16t (16t to second power). How many seconds will it... more
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12/01/14

The human body is 65% oxygen,18% carbon,and 10% hydrogen.the rest is other elements
what percent is composed of other elements?
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12/01/14

Find the solutions of the equation that are...
Find the solutions of the equation that are in the interval [0, 2π). (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.)   2 sin2 u = −1 − 3 sin u
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12/01/14

Simplify this equation
Simplify: t times square root of 7 times 8 square root of u
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12/01/14

Simplify this equation
Simplify: 12n(square root of 14n)^2
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