Answer:
A textbook weighs about 1 pound and is about 1 foot long
A car weighs about 1 ton and is about 5 yards long
A mosquito weighs about 2 mg and is about 1 inch long
Step-by-step explanation:
#commonsense lol
Answer:
P(A or B) is 0.72
Step-by-step explanation:
Given : P(A) = 0.3 and P(B) = 0.6
To Find:P(A or B) = P(A∪B)
Solution :
We are given that A and B are two independent events
Property : If A and B are independent events then ![P(A \cap B) = P(A) \times P(B)](https://tex.z-dn.net/?f=P%28A%20%5Ccap%20B%29%20%3D%20P%28A%29%20%5Ctimes%20P%28B%29)
So, ![P(A \cap B) = P(A) \times P(B)](https://tex.z-dn.net/?f=P%28A%20%5Ccap%20B%29%20%3D%20P%28A%29%20%5Ctimes%20P%28B%29)
![P(A \cap B) =0.3 \times 0.6](https://tex.z-dn.net/?f=P%28A%20%5Ccap%20B%29%20%3D0.3%20%5Ctimes%200.6)
![P(A \cap B) =0.18](https://tex.z-dn.net/?f=P%28A%20%5Ccap%20B%29%20%3D0.18)
Formula : ![P(A \cup B)=P(A)+P(B)-P(A \cap B)](https://tex.z-dn.net/?f=P%28A%20%5Ccup%20B%29%3DP%28A%29%2BP%28B%29-P%28A%20%5Ccap%20B%29)
![P(A \cup B)=0.3+0.6-0.18](https://tex.z-dn.net/?f=P%28A%20%5Ccup%20B%29%3D0.3%2B0.6-0.18)
![P(A \cup B)=0.72](https://tex.z-dn.net/?f=P%28A%20%5Ccup%20B%29%3D0.72)
Hence P(A or B) is 0.72
Answer:
1.005
Step-by-step explanation:
Here you go this the answer
Answer:
She has descended a total of 18 feet from the top to her friend.
Step-by-step explanation:
Anna is 26 ft. high on a rock-climbing wall.
She descends to the 15-foot mark,means she come to a height of
feet and rests.
Then climbs down until she reaches her friend, who is 8 feet from the ground.
So, she climbs down
feet more.
Hence, in total Anna has descended
feet
The answer : She has descended a total of 18 feet from the top to her friend.