f(x)= -x^2 + x^-1
f(-2)= - (-2)^2 + (-2)^-1 = -4 - 1/2 = -9/2
f(-1)= - (-1)^2 + (-1)^-1 = -1 -1 = -2
f(1) = - (1)^2 + (1)^-1 = -1 +1 = 0
The range is { -9/2, -2, 0}
18 squared is 324, not sure if you are supposed to simplify it i'm guessing maybe. If yes then it is 3
√
2 or 4.24264068... If not well obviously 324 is greater than 5.
So the answer would be ( > ) because 5 is bigger than 4.24....
Answer: x=7
Step-by-step explanation:
Answer:
69.5%
Step-by-step explanation:
A feature of the normal distribution is that this is completely determined by its mean and standard deviation, therefore, if two normal curves have the same mean and standard deviation we can be sure that they are the same normal curve. Then, the probability of getting a value of the normally distributed variable between 6 and 8 is 0.695. In practice we can say that if we get a large sample of observations of the variable, then, the percentage of all possible observations of the variable that lie between 6 and 8 is 100(0.695)% = 69.5%.
AB = 36 cm
BC = 28 cm
Since they are similar figures:
36/28 = 9/EF
36EF = 28*9
EF = 252/36 = 7 cm
Finding the area:
Area = 1/2 * DE * EF
Area = 1/2 * 9 * 7
Area = 31.5 cm^2
