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Factorials |
2017-07-27 |
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From dinesh:
Is there any shortcut formula for multiply series numbers.
like
1x2x3x4x5.......x100 =?
Answered by Penny Nom. |
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A semi ellipse |
2017-07-25 |
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From Ian:
The arch of the bridge is in the shape of semi ellipse,with its major axis at the water level.suppose the arch is 20ft. High in the middle,and 120 ft. Across its major axis. How high above the water level is the arch,at a point 20 ft.from the center (horizontally). Round of 2 decimal places
Answered by Penny Nom. |
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An arched window |
2017-07-24 |
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From Gerry:
Looking to make a full size template for an arched window. Need increments every 16". The radius is 138' 0 9/16" , the chord is 226" and the rise at center of chord is 43"
Answered by Penny Nom. |
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Some 4 digit numbers |
2017-07-24 |
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From Camille:
I need all of the 4 digit combinations that starts with number 3 and digits can't be repeated
Answered by Penny Nom. |
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3 consecutive multiples of 11 |
2017-07-22 |
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From nisha:
using the multiples formula shown at ypur site how can we solve finding 3 consecutive multiples of 11 whose sum is 363
Answered by Penny Nom. |
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A police officer spots a speeding car |
2017-07-20 |
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From Josh:
Marie, a police officer, spots a speeding car and starts chasing it. The speeding
car travels at a speed of 130 feet per second. Marie's car reaches a constant speed
of 145 feet per second 1725 feet from the start of the chase. During that time, the
speeding car has traveled 3150 feet. Write a system of equations to represent this
situation.
Answered by Penny Nom. |
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Catherine, Molly and Tom |
2017-07-19 |
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From liezel:
what is the answer of this problem, If Catherine and molly has 320pesos altogether, Molly and tom have 360 in all. Tom and Catherine have 240pesos altogether.How much does each of them have?
Answered by Penny Nom. |
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((a-5)/a)/(4/a) |
2017-07-18 |
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From Michael:
Find the Quotient:
((a-5)/a)/(4/a)
Answered by Penny Nom. |
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Parallel and Perpendicular lines |
2017-07-17 |
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From Karen:
Find an equation for the line with the given properties. Perpendicular to the line 7x + 2y = -6; containing the point (-2, -1)
Find an equation for the line with the given properties. Parallel to the line 5x - 3y =-6; x intercept = 3
Answered by Penny Nom. |
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An arithmetic sequence |
2017-07-17 |
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From abbi:
hi there im a student in 11 grade
ive been trying to do this task but i have no idea how to do it
the question is
Find the common difference and the n^th term of the arithmetic sequence if the first term is 4 and the twentieth sum of the terms is 1030
Answered by Penny Nom. |
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Squares and rectangles |
2017-07-15 |
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From Tront:
So, there's a general rule that all squares are rectangles but not all rectangles are squares. Im trying to find a term that would describe this relationship. I've found that if all of A is B but not all B is A then I'd say that A is a subset of B, but is there a term that describes the relationship as a whole? I don't want to describe the components, I want to describe the relationship as a whole.
Answered by Penny Nom. |
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Two consecutive odd integers |
2017-07-14 |
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From Adeeb:
Find two consecutive odd positive integers, sum of whose square is 290.
Answered by Penny Nom. |
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Exponential form |
2017-07-06 |
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From estela:
what is exponential form of 9×1000
Answered by Penny Nom. |
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Of cows and men |
2017-07-04 |
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From Akash:
In a group of cows and man the number of legs is 32 more than the twice the number of heads.The number of cows is?
Answered by Penny Nom. |
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The equation of a circle |
2017-07-03 |
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From Chen:
Find the center radius and equation of a circle in standard form given the following conditions:
1. Tangent to 3x+2y=0 at the point (0,0) and passing through (1,-1) and (6,0)
Answered by Penny Nom. |
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