The area of the top of the plate is 25 square inches
The vertex to the equation is, (4,2)
Step-by-step explanation:
after one hour red is 18 inches
blue is 7 inches
after two hour
Answer: 0.5467
Step-by-step explanation:
We assume that the test scores for adults are normally distributed with
Mean : 
Standard deviation : 
Sample size : = 50
Let x be the random variable that represents the IQ test scores for adults.
Z-score : 
For x =85

For x =115

By using standard normal distribution table , the probability the mean of the sample is between 95 and 105 :-

Hence, the probability that a randomly selected adult has an IQ between 85 and 115 =0.5467
X is less then or equal to 7