08/18/15

sine and cosine
angles A and B are located in the first quadrant. if sinA=5/13 and cosB=3/5, determine the exact value of cos(A+B)
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08/16/15

A builder is designing a rectangular parking lot. She has 300 feet of fencing to enclose the parking lot around three sides.
 What is the area of the parking lot.
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08/16/15

A jogger runs 106 yd in 10.00 seconds. What would be his time for a 463 m run at the same rate
its about rate and time and it is hard
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08/15/15

one angle of a triangle measures 120 degrees. the other two angles are congruent. write and solve an equation to find the measure of the congruent angels.
Please help me on this problem thank you
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08/15/15

A $1700 computer is worth 70% of its value each year in how many years will the value of the computer be less than or equal to $100
What equation do I use to solve this problem
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08/15/15

the sales of a brand of sneakers rose from $3 million to $3.6 million. Find the percent of increase to the nearest whole percent
algebra word proble
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08/15/15

julio is paid 1.4 times his normal rate for each hour he works over 30 hours in a week. last week he worked 35 hours and earned $436.60.
write and solve an equation to find Julio's normal hourly rate, r. 
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08/15/15

in 2003, the population of zimbabwe was about 12.6 million people, which is 1 million more than 4 times the population in 1950. write and solve an equation to i
can you please help me on this problem.
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08/15/15

A farmer has to get a dog an two geese an three bags of feed to the market across the river he can't leave the dog alone with the geese it
He can't leave the dog with the gees or the geese with the feed an only two can go across at a time.  How can he do it
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08/15/15

algebra and trigonometry
Find the sum of all the positive integers less than 100 that are multiples of 3.
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08/13/15

Word problem
a classroom has an equal number of boys and girls (eleven) eleven girls left to play badminton, leaving twice as many boys as girls in the classroom what was the original number of pupils present?
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08/13/15

Is (6x5)x3=5x(3x6) distributive or Associative property
Please help me asap
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08/13/15

the sum of two hundreds is 417 the bigger number is double the smaller number. what is the smaller number
the sum of two hundreds is 417 the bigger number is double the smaller number. what is the smaller number
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08/13/15

how many lines?
Sam counted the lines of a page in his book. Counting by threes gave a remainder of 2; counting by fives also gave a remainder of 2; and counting by sevens gave a remainder of... more
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08/13/15

prove that a triangle inscribed in a circle is an equilateral triangle. given arcPQ=arcQR=arcRP. prove that trianglePQR is an equilateral triangle
need help. just some simple proving that's all. tnx
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08/12/15

can you use time=distance/speed with this problem?
A woman can bicycle 68 miles in the same time as it takes her to walk 12 miles. She can ride 7 mph faster than she can walk. How fast can she walk?
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08/12/15

Use properties and definitions of operation to show that the statement is true. Justify each step.
(3b — 9) + 12 = 3b + 3
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08/12/15

coffee word problem
You mix the Terraza blend with the Rift Valley blend, but always in the same proportion. Yesterday, you mixed 150 pounds of the Terraza blend with 330 pounds of the Rift Valley blend. Today, there... more
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08/09/15

A plane can travel 640 miles against the wind in the same time it can travel 800 miles with the wind. If the plane can fly 180 mph in calm air, what is the spee
A plane can travel 640 miles against the wind in the same time it can travel 800 miles with the wind. If the plane can fly 180 mph in calm air, what is the speed of the wind?A. 10 mph B. 15... more
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08/09/15

What is 5 to the 2nd power??
-52
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08/09/15

explain these simple inequality division problems
My Question: How do I know when to flip the symbol (during multiplication or division) as opposed to when to subtract/add in order to change the positions of the numbers and variables?   Observ... more
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08/09/15

a cask contains 12 gallon of mixture of wine and water in ratio 3:1
a cask contains 12 gallon of mixture of wine and water in ratio 3:1 how much of mixture must drawn off and water substituted so that wine and water in cask may become half and half
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08/09/15

prove that the acute angles of an isosceles right triangle are congruent
formal proof please
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08/07/15

insanely hard quesitson
Compute the indicated means for 4 and 100.(a) arithmetic (b) geometric (c) harmonic
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08/06/15

16(x)^2 - (y)^2 - 160x - 12y + 360 = 0 The final answer is: ((y+6)^2)/4 - ((x-5)^2)/(1/4) = 1
This is from a question asking for the conversion of the given equation into the standard form of the equation of a hyperbola! I'm having issues understanding a basic principle of getting the final... more
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