07/31/16

solve the given system of equations by the equations by the substitution method; 9x +2y = 30 and 8x + 2y = 26
Solve x and y 
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07/13/16

question is below
A ball is thrown from a height of 217 feet with an initial downward velocity of 17/fts. The ball's height h (in feet) after t seconds is given by the following.=h−217−17t16t2How long after the ball... more
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06/24/16

A 60 kg block slides along the top of a 100 kg block with an acceleration of 2.0 m/s2 when a horizo.Find the coefficient of kinetic friction between the blocks.
A 60 kg block slides along the top of a 100 kg block with an acceleration of 2.0 m/s2 when a horizontal force F of 315 N is applied. The 100 kg block sits on a horizontal frictionless surface, but... more
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06/24/16

How much would Monica's balance be from Account 1 over 4.8 years? Round to two decimal places.
Monica has recently inherited $6300, which she wants to deposit into an IRA account. She has determined that her two best bets are an account that compounds semi-annually at an annual rate of 5.3%... more
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06/21/16

Find the number.
A two-digit no. is 3 more than 4 times the sum of its digits.. If 18 is added to the the no. its digits are reversed. Find the number.
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06/21/16

What value of x is in the solution set of 8x – 6 > 12 + 2x?
PLEASE HELP!!!!!
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06/19/16

3/8 of the regular price of a digital watch is $21. The price of the digital watch after discount is $21. Find the dollar amount of the discount.
This is a math word problem that involves money and fractions. 
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06/13/16

the amount of time
The amount of time it takes to fill a whirlpool tub is inversely proportional to the square of the radius of the pipe used to fill it. If a pipe of radius 2.5inches can fill the tub in 5?minutes,... more
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06/03/16

At what rate is the base of the triangle changing?
The altitude of a triangle is increasing at a rate of 2.000 centimeters/minute while the area of the triangle is increasing at a rate of 4.500 square centimeters/minute. At what rate is the base of... more
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06/03/16

find the differential
Let y=5√x Find the change in y, Δy when x=3 and Δx=0.4 Find the differential dy when x=3 and dx=0.4
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06/03/16

need 70 percent alcohol solution. how many ounces of 30% must be mixed with 40oz of 80% to obtain 70% solution?
i need to see the work as well as the solution please
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06/01/16

if the side of a square is the same length as the radius of a circle which shape will have the greater area
i need a anwser  
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06/01/16

determine the team's rowing speed in still water and the speed of the current.
a rowing team rowed an average of 14.4 miles per hour with the current and 9.2 miles per hour against the current. determine the team's rowing speed in still water and the speed of the current
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06/01/16

solving investment problem
I need the answer to this question and how to work it out.    An artist sold a painting for $410,000. He needs some of the money in 6 months and the rest in 1 yr. He can get a treasury bond for 6... more
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05/31/16

How to determine the weight of column?
A concrete column has a diameter of 350 mm and a length of 2 m. if the density of concrete is 2.45 Mg/m^3 determine the weight of the column in pounds
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05/31/16

Costco sells extra large eggs for $6.39 per two dozen. How much does each egg cost?
At this price per egg, if James eats ten eggs per week, how much will he have spent on eggs in one year? (Hint: There are 52 weeks in one year)
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05/28/16

Stoichiometry
Molarity and molality of a solution (molecular weight=50) in aqueous solution is 9 and 10 respectively. What is its density?
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05/26/16

Monica decided to divide a total of $42,000 into three investments: a savings account paying 5% interest, a time deposit paying 7%, and a bond paying 9%
Monica decided to divide a total of $42,000 into three investments: a savings account paying 5% interest, a time deposit paying 7%, and a bond paying 9%. Her total annual interest from the three... more
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05/24/16

Long division of polynomials
How do I solve this using long division:    (x4—1) / (x2—1)
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05/22/16

the length l of a rectangle is 3 more than twice the width w. The area is 90. Find the width (1) w=3 (2) w=6 (3) w=7.5 (4) w=9
Steps of solving it?
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05/22/16

I have an independent retirement account...
I have an independent retirement account with first community credit union of beloit wisconsin which currently pay dividends at .75% per year, compounded monthly for accouts with balances up to... more
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05/22/16

You deposit
you deposit 1000 at 2% per year in a money market account. what is the balance at the end of one year and what is the annual shield if the interest is    a. simple interest? b.compounded... more
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05/22/16

simplify and identify what values of the variable will make the denominator undefined
(3/(x^2-25))-(1/(x+5))
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05/21/16

Tom traveled 220 miles east of St. Louis. For most of the trip he averaged 70 mph, but...
Tom traveled 220 miles east of St. Louis. For most of the trip he averaged 70 mph, but for one period of time he was slowed to 20 mph due to a major accident. If the total time of travel was 6... more
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05/21/16

How do I start this?
Find A and B to the nearest tenth ∠A is 28 degrees  ∠C is 50 degrees  and between A and B is 15                                                                                            It... more
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