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What is 13% of $5.99? |
2010-06-15 |
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From Paige:
What is 13% of $5.99 ?
Answered by Penny Nom. |
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Expand and simplify |
2010-06-15 |
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From Alaa:
Expand and simplify
(x-9)(x+2)
Answered by Penny Nom. |
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How many gallons do I need to finish filling the tank? |
2010-06-14 |
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From Bruce:
I have a tank on it's side. 44" dia. by 72" long, I'm 6" from having tank full. How many gallons do I need to finish filling tank?
Answered by Harley Weston. |
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Comparing percentages |
2010-06-14 |
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From Anouska:
In category A, Annie gave 5 out of 6 responses. I make this 83%
I the same category, Adam gave 4 out of 10 responses. I make this 40%
Does this mean that Annie gave 43% more responses in this category than Adam?
Answered by Robert Dawson. |
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A max/min problem |
2010-06-12 |
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From valentin:
What is the maximum area of an isosceles triangle with two side lengths equal to 5 and one side length equal to 2x, where 0 ≤ x ≤ 5?
Answered by Harley Weston. |
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The area of a circle |
2010-06-12 |
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From grier:
please,
what is the area of a semicircle with arc length 3pi?
Answered by Penny Nom. |
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Distribution with Fractional Terms |
2010-06-11 |
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From Vincent:
Compounded semiannually. P dollars is invested at annual interest rate r for 1 year. If the interest iscompounded semiannually, then the polynomial P(1 + r/2)^2 represents the value of the interest after 1 year. Rewrite this expression without parentheses. Evaluate the polynomial if P=$200 and r = 10%.
Answered by Janice Cotcher. |
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My phone is "sim locked" |
2010-06-10 |
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From Daniel:
Question from daniel:
got a phone that says sim locked, it requires 0-9 digit code to get in, how many combinations could there be if you could please list the possibilities, the number can be repeated.
Answered by Penny Nom. |
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Roosters, hens and chicks |
2010-06-10 |
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From Kamarah:
If a rooster is worth 5 coins and a hen is worth 3 coins and chicks 3 together are worth 1 coin, how many roosters, hen and chicks totaling 100 can be bought with 100 coins?
notes:
you must buy at least one of each type of fowl
no fractional fowl
chicks are purchased in multiple of 3
find 3 solutions
Answered by Penny Nom. |
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Graphical Representation of Complex Numbers |
2010-06-08 |
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From Anas:
why do we write complex number a+ib as (a,b)?
Answered by Janice Cotcher. |
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Standard Deviation from a Proportion |
2010-06-08 |
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From silvestre:
A large company finds that approximately 17% of all purchases are returned for credit. If the company sells 100,000 different items this year, about how many items will be returned. Find the Standard Deviation.
Answered by Janice Cotcher. |
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The tires on Helen's new car |
2010-06-08 |
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From Rich:
Helen bought a new car with four tires and a full-size spare. If she rotated the tires so that each tire would have the same amount of wear, then how many miles were on each tire when her odometer showed 40,000 miles?
Answered by Penny Nom. |
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Going to the bike shop |
2010-06-07 |
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From Omi:
Marie rode her bicycle from her home to the bicycle shop in town and then walked back home. If she averaged 6 miles per hour riding and 3 miles per hour walking, how far is it from her home to the bicycle shop if her total travel time was 1 hour?
Answered by Penny Nom. |
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An input-output table |
2010-06-07 |
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From Brian:
Make an Input -output table to represent the function. Use 0,1,2,3 as the Domain.
f(x)= 3+7x
Answered by Harley Weston. |
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Using the limit definition |
2010-06-06 |
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From Meagan:
Using the limit definition find the derivative of 3/(2x^2)
Answered by Harley Weston. |
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