 |
|
|
|
|
|
|
|
|
1 square cm is 100 square mm |
2020-06-19 |
|
From macie:
explain why the conversion factor for cm squared to mm squared is 100 ,and not 10
Answered by Penny Nom. |
|
|
|
|
|
|
390 as a percentage of 800 |
2020-06-18 |
|
From Yug:
What percentage is 390 grams of 800 grams?
Answered by Penny Nom. |
|
|
|
|
|
|
The substitution method |
2020-06-10 |
|
From Hardebolar:
simultaneous equation by substitution method
.a-b=2/3
a+b=1 2/3
Answered by p. |
|
|
|
|
|
|
Working backwards |
2020-06-05 |
|
From Jill:
Emma has a bunch of grapes (1)/(2 ) of it she gave it to her friend and (3)/(4 ) of the remaining grapes she gave it to Gina. There are 4 grapes remaining. So how many bunch of grapes to begin with?
Answered by Harley Weston. |
|
|
|
|
|
|
An octagonal pool deck |
2020-05-30 |
|
From lauchie:
need help on cut sizes and cut degrees on octagon pool deck for a 24 foot round pool
Answered by Harley Weston. |
|
|
|
|
|
|
Percentage profit |
2020-05-30 |
|
From jaheem:
A shopkeeper buys an article for 80cents and sold it for $1. Calculate the percentage profit.
Answered by Penny Nom. |
|
|
|
|
|
|
A hexagonal planter |
2020-05-28 |
|
From Callie:
Hello, I'm having trouble cutting my angles for my 2 x 4 planter. I did exactly as I've watched and read and mine is just not turning out! Ok, so I want 6 or 8 piece hexagon. With an interior of about 10". So I understand that the boards can be any length, but its the 30 degree or 22 1/2" angles that matter. So. How do I figure how long my 2 x 4 is with 6. and another 8 pieces of 2 x 4 to make this planter and at what angle. So does the length determine the angle? Thank you in advance! i don't want to waste anymore wood! And how to figure length, angle and center circumference?
Answered by Harley Weston. |
|
|
|
|
|
|
10 of 24 hours as a percentage |
2020-05-27 |
|
From Larzy:
what is 10 of 24 hours in percentages
Answered by Harley Weston. |
|
|
|
|
|
|
Are all quadrilaterals the same? |
2020-05-27 |
|
From eva:
are all quadrilaterals the same?
Answered by Penny Nom. |
|
|
|
|
|
|
A triangular garden |
2020-05-24 |
|
From yoonji:
the 3 sides of a triangular garden measure 200 ft., 250 ft., and 300 ft., respectively. the garden is to be divided by a line bisecting the longest side and drawn from the opposite vertex. what is the length of the bisecting line?
Answered by Penny Nom. |
|
|
|
|
|
|
A sand castle in the shape of a truncated cone |
2020-05-23 |
|
From Summer:
A sand castle is in the shape of a truncated cone as shown. Calculate the length of the diameter of the base.
The diameter of the top of the truncated cone is 20cm
The height is 30cm
The slopes are 32cm
Answered by Penny Nom. |
|
|
|
|
|
|
A 50:1 ratio in a pint |
2020-05-22 |
|
From Steve:
How much oil do I need to put in a pint if it's 50:1 ratio
Answered by Harley Weston. |
|
|
|
|
|
|
Drawing a counter from 2 bags |
2020-05-21 |
|
From Sephy:
Question 4: Two bags, 1 and 2, each contain equal size counters.
Bag 1 contains a pink counter, yellow counter and white counter.
Bag 2 contains counters labelled 1, 4, 5 and 7.
A counter is drawn at random from bag 1
and a counter is drawn at random from bag 2.
If the counter from bag 1 is pink, the number on the
counter from bag 2 is increased by 1
If the counter from bag 1 is yellow, the number on the
counter from bag 2 is decreased by 5
If the counter from bag 1 is white, the number is halved.
Find the probability of scoring a number below 3
Answered by Penny Nom. |
|
|
|
|
|
|
Forming the largest cylinder |
2020-05-20 |
|
From Amanda:
How do I find the maximum surface area and volume of a cylinder made up of ONE 8.5x11 piece of paper?
Answered by Penny Nom. |
|
|
|
|
|
|
Maximizing the volume of a cone |
2020-05-18 |
|
From Ella:
Hello, this is question - 'If you take a circle with a radius of 42cm and cut a sector from it,
the remaining shape can be curled around to form a cone. Find the sector
angle that produces the maximum volume for the cone made from your circle.'
Answered by Penny Nom. |
|
|
