08/30/15

when 30% of a number is added to the number, the results is 169.
What is the Number?
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08/30/15

subset selections
the subsets A⊂B⊂C of a universal set U, except assume that n(A)=5 and n(C)=10.   in how many different way can you select B if    1. n(B)=6   2. n(B)=7
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08/29/15

A can of beans has surface area 396 cm^2. It's height is 20 cm. What is the radius of the circular top?
College question
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08/29/15

How many vehicles carry 3 crew members?
There are 24 space patrol vehicles in a hanger. Some of the vehicles carry 3 crew members. The others carry 4 crew members. All 86 crew members are at a briefing. How many vehicles carry 3 crew... more
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08/29/15

explain why 5 x 4 x 3 x 2 x 1 + 3 is a composite number?
explain why 5 x 4 x 3 x 2 x 1 + 3 is a composite number?  
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08/29/15

what is the formula for this problem and how do you figure it out
Two airplanes leave the same airport at 8:00 a.m. traveling in opposite directions. The northbound plane is traveling at 450 mph (relative ground speed) and the southbound plane is traveling 350... more
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08/29/15

What is the next number in the sequence? 3, 3, 6, 9, 15, 24, ...
This is a question from my seventh grade summer packet. I need a little help on it. There are many questions but this is only one. I understand that it is about the number sequence, but I just can... more
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08/28/15

need help with these questions !!!! show work use numbers symbolds or words
When a and b are numbers, we can expand (a+b)2 as powers of a and b as follows FoIL                                    (a+b)2=                  (a+b)(a+b)= a(times)a+a(times)... more
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08/28/15

a car distance rate and time questions?
A car leaves Sacremento for LA traveling 54mi/hr. A half hour later another car leaves Sacremento for LA traveling 64 mi/hr. How long after the second car leaves will it pass the first car?
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08/27/15

An equilateral triangle is inscribed in a circle with r = 10. Find the perimeter of the triangle.
Find the perimeter of the triangle. 
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08/27/15

if ab x c = dde what does a= b= and d= if e=6 and c=4
i need help with this math problem 
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08/27/15

Expression
Erin is buying produce at a store. She buys c cucumbers at $0.99 each and a apples at &0.79 each. What does the expression $0.99 + .79 represent?
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08/27/15

GH=7y+3HI=3y-5 GI=9y+7
I need help with this problem it really confuses me! PLEASE Help! Thank you so much. I appreciate it. LOL.
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08/27/15

-2/7c=-8+c
I'm having trouble solving this equation and I don't know how to combine the variable. Also, -2/7 is supposed to be a fraction.
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08/27/15

Original selling price???
A coat costs $92.96 including an 8.5% sales tax and a 40% discount. Find the original selling price of the coat.
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08/27/15

what is communitive property
I always get confuse on the property stuff.
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08/27/15

the length and width of a rectangle are both doubled. What is the ratio of the area of the larger rectangle to the area of the smaller rectangle?
the length and width of a rectangle are both doubled. What is the ratio of the area of the larger rectangle to the area of the smaller rectangle?
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08/27/15

College algebra help!!!
Express as a polynomial. (Simplify your answer completely.) (√x +√y)(√x-√y)
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08/27/15

How much does a single book cost
chria buys 8 books, but it turned out he was $7 short. what he did buy was 7 books and was left with $5 to spare. How much does a single book cost if all the books he was intrested in cost the same.
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08/27/15

I need help with my college algebra homework. I'm horrible at these...
One of the oldest banks in the United States is the Bank of America, founded in 1812. If $200 had been deposited at that time into an account that paid 4% annual interest, then 170 years later the... more
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08/26/15

A Rectangular Athletic Field Is Twice As Long As It Is Wide. If The Perimeter Of The Athletic Firls Is 270 Yards, What Are Its
A Rectangular Athletic Field Is Twice As Long As It Is Wide. If The Perimeter Of The Athletic Field Is 270 Yards, What Are Its
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08/26/15

If point A is located at (-7,-3),and there are 12 points between A and B, what could be the possible coordinates for point B?
Point A (-7,-3), 12 points between A and B. What possible coordinates for pointB?  
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08/26/15

What 2 numbers multiply to equal 3 and add to equal -28?
I need help with this math problem for my homework
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08/26/15

The measure of a supplement of an angle is 12 degrees greater than 3 times the measure of a complement. Find the measure of the angle
I really need help and I don't get how to get it
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08/26/15

please answer !!!!!
a farm is 1 3/4 miles by 2 miles what is the area of the farm in acres
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