Start with "<span>1 British pound equals 1.6972 Swiss francs" and make a conversion factor out of it:
</span>
1.6972 Sw. F.
------------------
1 Br. pound
Invert this, obtaining:
1 Br. pound
-------------------
1.6972 Sw. F.
Here's where the fun begins. To find the value of 1 SFr in BPS, mult.
1 SFr by the above conversion factor:
1 SFr 1 BPS
----------- * --------------------- = 0.5892 BPS
1 1.6972 Sw. F.
This is a formal way in which to do this problem. You could obtain the same result if you'd simply invert
1 Br. pound
------------------- = 1
1.6972 Sw. F.
and divide 1 by 1.6972.
To make a reasonable prediction, you can create a proportion using the ratio of green beads to total beads and make it equal to x green out of 150 trials.
<u>green</u> <u>6 </u> <u>x</u>
total 20 = 150; use cross products to solve for x green beads.
15 x 6 = 20x
<u>900 </u>= <u>20x</u>
20 20
x = 45 green
A reasonable prediction would be 45 green beads based on theoretical probability.
North
You are facing north. 90 degrees left is west. 180 degrees is now east. Reversing your direction is the same as 180 so your now back to facing west. Turn 45 left you’re now facing south. Reverse again and you’re facing north.
Answer:
a) 2/42
b)16/42
Step-by-step explanation:
a) 2/7 x 1/6 = 2/42
b) (1,2) (1,3) (2,3)
P(1,2) = 2/7 x 3/6 = 6/42
P(1,3) = 2/7 x 2/6 = 4/42
P(2,3) = 3/7 x 2/6 = 6/42
Add all = 6/42 + 4/42 + 6/42 = 16/42
