The perimeter of a square picnic blanket is 40 feet. How long is each side?
1 answer:
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Answer:
28
Step-by-step explanation:
Here is the complete question used in answering this question :
Three-fourths of the boats in the marina are white. 4/7 of the remaining boats are blue , and the rest are red . If there are 9red boats, how many boats are in the marina?
We first have to determine the fraction of the boats that are red
1 - ( +
)
1 -
1 -
1 - 1
= 9/28
so, 9/28 of the boats are red
let b represent the total number of boats
9/28 x b = 9
to find b, divide both sides of the equation by 28/9
b = 28
Answer:
2. 1- Experimental probability of rolling a 4 = 40%
3. 2- Theoretical probability is 3% greater than experimental probability.
Step-by-step explanation:
Experimental probability of rolling a 4 = 100 ×
= 100 × 0.4
= 40%
Experimental probability of getting at least one tail =
= 0.72
Theoretical probability of getting at least one tail =
= 0.75
Theoretical probability is 3% greater than experimental probability.