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5000 gallons in cubic yards |
2015-02-17 |
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From Miguel:
If I have a cube shaped tank in the ground that holds 5000 gallons and I want to take it out and fill the hole in with dirt, how much dirt will I need in yards?
Answered by Penny Nom. |
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Tiling a room |
2015-02-16 |
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From Owen:
nicolas room is 56m2 she wants to put tiles down which are 50cm by 50cm each cost £4 how much money will she spend
Answered by Penny Nom. |
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Two equations |
2015-02-16 |
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From nigel:
2x+1/2y=1
6x-3/2y=21
Answered by Penny Nom. |
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A 330 foot long fence |
2015-02-15 |
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From Marsha:
I am putting up a fence 330 feet long and want to put the t post every 4 feet
how many t post do i need?
Answered by Penny Nom. |
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Distance, time and rate for three people |
2015-02-15 |
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From Mubashir:
Steven left Town A and walked towards Town B at a speed of 100m/min. At the same time, Jason and Melvin started from Town B and walked towards Town A at a speed of 80m/min and 75m/min respectively. If Steven met Melvin six minutes after passing Jason, find the distance between Town A and Town B.
Answered by Penny Nom. |
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Bearings and a rectangular plot |
2015-02-14 |
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From Mubashir:
A,B,C,D are the four corners of a rectangular plot marked on level ground. Given that the bearing of B from A is 040 degrees and that the bearing of C from A is 090 degrees. Calculate the bearing of
(a)B from C
(b)A from C
(c) D from C
Answered by Penny Nom. |
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A stone is dropped in a lake |
2015-02-14 |
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From Wendy:
Hi, I have problems solving this problem. We didn't exactly go over these kind of problems and the book doesn't have an example either. Thank you for your help!
A stone is dropped in a lake, creating a circular ripple that travels outward at a speed of 80 cm/s.
(a) Find a function g that models the radius as a function of time t.
g(t) =
(b) Find a function f that models the area of the circle as a function of the radius r.
f(r) =
(c) Find f compose g.
f compose g =
Answered by Penny Nom. |
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Stopping distance |
2015-02-11 |
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From Audrey:
A Harley Davidson motor cycle weighing 650 lbs with a rider weighing 175 bs
was going 40 miles per hour. He had to make a sudden stop . Slammed on brakes. How long a distance for him to stop?
Answered by Penny Nom. |
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A word problem with fractions |
2015-02-11 |
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From Omokayode:
A vehicle tank was 3/5 full of petrol. When 21 litres of fuel was added it was 5/6 full. How many litres of petrol can the tank hold?
Answered by Penny Nom. |
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A fence post problem |
2015-02-08 |
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From Nicole:
In Susan's rectangular garden plot, she put 12 posts on the long sides
and 8 posts on the short sides. How many posts did she use altogether?
(The answer is not 40.)
Answered by Penny Nom. |
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A circle and a chord |
2015-02-07 |
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From Dakota:
If the diameter of a circle is 48 cm, find the shortest distance from a chord of length 34 cm to the center of the circle
Answered by Penny Nom. |
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Speed, distance and time |
2015-02-06 |
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From Terry:
How many seconds would it take to travel 0.18 km at a speed of 130km per hour?
Answered by Penny Nom. |
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The product of a 2-digit number and a 3-digit number |
2015-02-06 |
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From Nathaniel:
The product of a 2-digit number and a 3-digit number is about 50 000 what are the products
Answered by Penny Nom. |
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2x^2-2x+1=4x+1 |
2015-02-06 |
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From Caitlyn:
2x^2-2x+1=4x+1
Answered by Penny Nom. |
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The center and radius of a circle |
2015-02-06 |
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From ariana:
I need to find the center and the radius of this circle. I don't know how to put 9/2
than square it into a fraction.
x^2 + 2x + y^2 +9y=5
Answered by Penny Nom. |
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