Answer:
8 Weeks
Step-by-step explanation:
First let's collect the given data:
• <u>Class A:</u>
- Starts at 8 cm
- grows at 3.5 cm/week
• <u>Class B:</u>
- Starts at 10cm
- grows at 3.25 cm/week
Class B's plant starts out 2 cm taller and Class A's plant grows 1/4 cm faster. So, to find when these two will be at an equal height, divide 2 cm by 1/4.
2 ÷ 1/4 =
2 × 4/1 =
2 × 4 =
8
It will take 8 weeks for the plants to be at an equal height.
Answer:
2:3
Step-by-step explanation:
First, create the ratio by putting the numbers together:
There are 4 red and 6 blue marbles:
4:6
Since both of these are divisible by 2, it can be simplified:
4:6
2:3
So, the ratio of red marbles to blue marbles is 2:3
Soccer would take I since that is half of the graph.
Football would take IV since that is 1/4
Baseball looks like it will take II
So that means basketball would take III
Your answer is C
Answer:
The expected value is 0
Game is fair
Step-by-step explanation:
Probability = required outcome / Total possible outcomes
Number of red cards = 26
Numbw rof black cards = 26
Total number of cards = 52
If a red card is chosen, amount paid is doubled
If a black card is chosen, no winning or amount is collected.
Net money won or lost on choosing a red card = ($2 - $1) = $1
Net amount won on choosing a black card = $0 - $1 = - $1
P(red) = 26 /52 = 1/2
P(blue) = 26 /52 = 1/2
Expected value (E):
E = x*p(x)
E(X) = (1/2 * 1) + (1/2 * - 1)
E(X) = 1/2 - 1/2 = 0
Hence, since the expected value is 0 ; then the game is fair
