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The limit of (e^x-1)^(1/x) as x tends to 0 |
2018-02-27 |
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From ARGHA:
Find the limit of (e^x-1)^(1/x) as x tends to 0.
Answered by Penny Nom. |
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A cyclist reduces his speed |
2018-02-27 |
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From Katherine:
Suppose the winner had reduced his average cycling rate by .1 mile per hour.
By how much would his time have changed?
(the cyclist's rate is 23.66 miles per hour and the answer to the question before this
one was that he cycled 2,292 miles in 96.87 hours)
Answered by Penny Nom. |
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A four digit pass code |
2018-02-26 |
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From Jessica:
I was trying to fond out how many combinations could there be for a four digit pass code to a phone when no numbers are repeated?
Answered by Penny Nom. |
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Billions and trillions |
2018-02-25 |
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From Sheila:
How many 50 billion equal 100 Trillion ?
How many 20 billion equal 100 Trillion?
How many 500 million equal 100 Trillion?
How many 50 million equal 100 Trillion?
How many 50 thousand equal 100 Trillion?
Answered by Penny Nom. |
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$525 is shared among three friends |
2018-02-25 |
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From Iyanla:
If $525 is shared among three friends: Paul Katherine and Brandon so that Paul gets $15 less than Brandon and Katherine gets 4 times as much as Paul, how would I solve this equation?
Answered by Penny Nom. |
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The perimeter of a square |
2018-02-25 |
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From Alicia:
What's the perimeter of a square with 441cm square
Answered by Penny Nom. |
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Multiplies and factors |
2018-02-24 |
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From Lil:
Is a multiple the same as a factor?
Answered by Penny Nom. |
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Dividing a region in half |
2018-02-24 |
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From mandy:
There is a line through the origin that divides the region bounded by the parabola y=4x−5x2y=4x−5x2 and the x-axis into two regions with equal area. What is the slope of that line?
Answered by Penny Nom. |
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The slope of a line |
2018-02-22 |
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From Steve:
my current slope is 6%. I want to know how many inches higher I will be at 18'
Thanks
Answered by Penny Nom. |
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2.5 gallons of liquid, one half an inch deep |
2018-02-21 |
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From Cain:
How many square feet would 2.5 gallons of liquid cover at half an inch deep?
Answered by Penny Nom. |
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nC0 + nC1 + nC2 + .... + nCn = 2^n |
2018-02-19 |
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From bristal:
(QQ) Prove, nC0 + nC1 + nC2 + .... + nCn = 2^n.
Answered by Penny Nom. |
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-2 (a + 4) = 18 |
2018-02-18 |
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From rebecca:
-2 (a + 4) = 18
how do i do this with showing it distributive property ( symbolically)
Thank you!
Answered by Penny Nom. |
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A footballer angle |
2018-02-14 |
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From Kim:
Two goal posts are 8m apart. A footballer is 34m from one post and 38m from the other. Within what angle must he kick the ball if he is to score a goal.
Answered by Penny Nom. |
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What is the speed of the skateboarder? |
2018-02-13 |
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From Zack:
It takes a skateboarder 20 minutes to get to school, which is 6 km from home. What is the speed of the skateboarder?
Answered by Penny Nom. |
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Solar cells |
2018-02-12 |
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From karla:
Solar (photovoltaic) cells convert sunlight directly into electricity. If solar cells were 100% efficient, they would generate about 1000 watts of power per square meter of surface area when exposed to direct sunlight. With lower efficiency, they generate proportionally less power. For example, 10% efficient cells generate 100 watts of power in direct sunlight. Suppose you want to supply 22 kilowattss of power to a house by putting solar panels on its roof. For solar cells with the average power of 49 watts per square meter of solar panels, how many square meters of solar panels would you need? Assume you can make use of the average power from the solar cells
Answered by Penny Nom. |
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