Minus p both sides
xy=5-p
divide both sides by x
y=(5-p)/x
B
Answer:
-3 < x
Step-by-step explanation:
3(x + 2) > X.
Distribute
3x+6 >x
Subtract 3x from each side
3x-3x +6 >x-3x
6> -2x
Divide each side by -2, remembering to flip the inequality
6/-2 < -2x/-2
-3 < x
Answer:
We use scientific notation as sometimes numbers are so so big, that it becomes inconvenient for us to write the actual number.
Step-by-step explanation:
For example, if you have 9 billion of something, you wouldn't want to write those 9 zeroes all the time.
When writing in scientific notation we count the number of decimal places to when we have one non-zero integer to the right of the decimal place. We then write that number and multiply it by ten to the number of decimal places you counted earlier.
e.g. 4.8 X 10^7
Answer:
A. Yes, the table shows a probability distribution.
Step-by-step explanation:
In a probability distribution, none of the values can be negative or over 1. Additionally, all of the values must sum to 1.
Our probabilities are:
0.087; 0.328; 0.416; and 0.169. None of these are negative and none are over 1.
0.087+0.328+0.416+0.169 = 1.00; this means that this is a probability distribution.
There are total (3r + 4g + 2b) = 9 balls in the bag . Two balls are drawn, our event happens if exactly one of them is a green ball. The required probability of happening of the required event is, therefore
= {C(4, 1)xC(5, 1)}/ C(9, 2) = (5x4)/36
= 5/9 .
