09/15/14

How many green marbles need to be taken out to have a total of 52% green?
Okay, so my question is...If there are 150 marbles total in a bag with 90 of them green and 60 are red, how many green marbles need to be taken out to have 52% of them green?
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09/15/14

The cycles have 16 tires altogether. How many bicycles and unicycles did the circus order
The circus orders bicycles and unicycles for a new act. It orders a total of 12 cycles. The cycles have 16 tires altogether. How many bicycles and unicycles did the circus order
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09/15/14

Even multiple squares
Could someone explain how to solve this problem please?   How many integers exist that are even multiples of 7 between 1 and 1,000,000 and are also squares?    Thanks!
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09/15/14

word problem
The octane rating of gasoline is a measure of the amount of isoocatane in a gallon of gas. Subaru recommends 91-octane gasoline for the 2009 legacy 30. R. How much 87-octane gas and how much... more
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09/15/14

The length of the rectangular painting is 4 inches more than the width. Find the dimensions of the reproduction if it has a perimeter of 87.6 inches.
Really stumped with this problem. Any help is great
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09/15/14

A stockbroker has money in three accounts. The interest rates on the three accounts are 7%,8%, and 9%. If she has twice as much money invested at 8% as she does
A stockbroker has money in three accounts. The interest rates on the three accounts are 7%,8%, and 9%. If she has twice as much money invested at 8% as she does in 7%, three times as much at 9% as... more
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09/15/14

box in shape of cube needs to be painted. box has no lid and is 1.1m high
A box in the shape of a cube needs to be painted. The box does not have a lid. The box is 1.1m high. If the inside and outside need painting what is the total area to be painted?
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09/15/14

a number exceeds twice its square root by 3. find the number.
a number exceeds twice its square root by 3. find the number.
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09/14/14

If b=16.9 degrees and c=7.55 cm, find b
How do you solve for b?
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09/14/14

A student in algebra course has test scores of 78, 83, 74, and 82. What score on the next test will raise the student's average to 80?
A student in algebra course has test scores of 78, 83, 74, and 82. What score on the next text will raise the student's average to 80?
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09/14/14

algebra question
M is 30% of Q, Q is 20% of P and N is 50% of P. Calculate M/N   Please show me the way to calculate this! Thanks
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09/13/14

the sum of radical-18 and radical-72 is?
√-18 + √-72  ?
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09/13/14

Problem solving
Place the following numbers on the lines below, so that the product will become as big as possible:5,6,7,8,9_ _ _ * _... more
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09/13/14

binomial theorem
for all natural numbers n, {(22n)*(32n)}-1-35n is divisible by???  
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09/13/14

Problemsolving
1/5 of the workers on a company drives their car to work. 3/8 of the ones who are NOT driving, are taking their bicycles to work. The rest use public transport. How many employees use public... more
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09/13/14

In a rectangle KLMN, angle LNM = 34 degrees. calculate; angle KLN and angle KML.
i m doing geometry of o levels
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09/12/14

An experiment consists of flipping a coin 6 times and noting the number of times that a heads is flipped. Find the sample space S of this experiment.
An experiment consists of flipping a coin 6 times and noting the number of times that a heads is flipped. What is the sample space?
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09/12/14

solve using the substitution method a-2b=33a=6b+9
a-2b=3   3a=6b+9   solve using the substitution method
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09/12/14

A kite is on a 35m string and is a horizontal distance of 22m from the flier. How high is the kite above the ground?
I need help please!
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09/11/14

Probability
Student is assigned 4 digit pin to access money in personal lunch account.  Code is randomly generated and first digit cannot be 0. What is the probability that a student lunch code will be a... more
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09/11/14

I'm an 8th grader and got into algebra. My question is how to simplify problems like 5•99
Other examples:   2•(473•5) 12•199 4•27•5•3 they do some different things like  5*99 5*(100+(-1)) 500+(-5) =495
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09/11/14

word problem
Roast beef has 25g of protein and 11g of calcium. Mashe potatoes have 2g of protein and 25g of calcium. How many servings each are needed to have 29g of protein and 61g of calcium? (I know the... more
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09/11/14

3 variable equation
30x+10y+20z=130 15x+20y+10z=95 10x+25y+20z=140
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09/10/14

If you take the square root of every whole number, from 1-100. How many of them will be irrational numbers?
I'm looking to find the answer to the question:  If You take the square root of every whole number from 1-100,  How many of them will be irrational numbers?
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09/10/14

6x-2y=-244x-2y=-26
I dont know what to do. I have to solve by the elimination method.  
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