Answer:
31%
Step-by-step explanation:
To determine the probability of obtaining 3 or any number in a roll, we divide the number of outcomes with the sample space.
probability of 3 : n = 6/64 = 3/32 = 0.09375
probability of 4 : n = 14/64 = 7/32 = 0.21875
Since, we use the conjuction "or", we therefore add up these probabilities.
n = 5/16 or 0.3125
Hope this Helps
Here's how to do dividing in a certain ratio:
-- You want to divide up the whole thing in the ratio of
4 parts, 5 parts, and 9 parts.
-- How many parts all together ? (4 + 5 + 9) = 18 parts all together.
-- The whole thing is 180, and that's 18 total parts.
So each part is (180/18) = 10 degrees.
4 parts = (4 x 10) = 40
5 parts = (5 x 10) = 50
9 parts = (9 x 10) = 90.
Check: (40 + 50 + 90) = 180 . yay!
==============================
For the second one, I think there are some words missing.
To solve this, simply switch the X and y variables within one equation, and upon doing so, see and check if it equals to the other equation.
f(X) = -X + 4/5
Y = -X + 4/5
X = (-Y+4)/5
5X = -Y + 4
-Y = 5X - 4
Y = -5x + 4
Yes, by looking at the second equation it is an inverse of the first one.
Answer:
He can add through calculater or by doing addition in his mind
