Hello There!
So we divide fractions by multiplying by the reciprocal.
So let’s change 6/7 divided by 3/8 to 6/7 multiplied by 8/3.
Once we do that, we can start our multiplication.
Once we multiply, we get 48/21
We can both divide these by 3 to simplify it so once we divide we will get
16/7
This can be turned in a mix number and it would be 2 and 2/7
2) Picking a purple marble?
3) Picking a red or white marble?
4) Picking a marble whose color has 5 letters in it?
Answer:
1.) Chances of picking a black marble: 28/81 or 34.6%
2). 0/81 chances of picking a purple marble or 0%
3.) Chances of picking a red or white marble: 35/81 or 43.2%
4.) Chances of picking a marble whose color has 5 letter in it: 40/81 or 49.4%
Answer:
52 sides
Step-by-step explanation:
The only way I know how to do this is to create one fraction which is a combination of 2 steps used when 1 of the interior angles is known.
Formula
360/(180 - 9000/s ) = s
Multiply denominator and numerator on the left by s.
360 * s
======= = s
s* (180 - 9000/s)
Remove the brackets on the denominator
360s
================ =s
180s - 9000
Cancel the numerators s's.
360 / (180s - 9000) = 1
Multiply both sides by 180s - 9000
360 =180s - 9000
Add 9000 to both sides
360 + 9000 = 180s
9360 = 180s
Divide by 180
9360/180 = 180/180 s
s = 52