Answer:
Step-by-step explanation:
symmetry with respect to y-axis for y=f(x) means f(-x)=f(x)
in this case, y = f(x) = x / (x^2+4)
f(-x) = -x / ((-x)^2+4) = -x / (x^2+4) = -f(x)
so it is not symmetric to y-axis
symmetry with respect to x-axis for x=g(y) means g(-y)=g(y)
in this case, y = x / (x^2+4)
y*(x^2+4) = x
y*x^2 + 4y - x = 0
substitute -y into g(y)
(-y)*x^2 +4(-y) - x = 0
-y*x^2 - 4y - x = 0
y*x^2 + 4y + x = 0
so g(-y) is not equal to g(y)
so it is not symmetric to x-axis
This is just for the first page
1: 9
2: 9.2
3. 1/4
4. 10.2
5. 99
6. 2 1/7
7. 15.9
8. 125
9. 200
10. |15| and |-15|
11. <
12. =
13. <
14. >
15a. boat A is 33 and boat B is 25
15b. boat B is closer
16. -12, -9, 0, |-7|, 12, |-13|
17. -17, -15, |-16|, |-18|, |-20|, 22
18. 0
19. 4
20. -3
Answer:
I will help you but question is not clear
Answer:
Null hypothesis would be:
C. The true proportion of residents who have recently had the flu is 0.05.
Alternative hypothesis would be:
E. The true proportion of residents who have recently had the flu is greater than 0.05.
Step-by-step explanation:
Hypothesis testing is made to estimate the true population proportion<em> using the sample info. </em>
The purpose is to provide sufficient evidence to support that the true proportion of people who have recently had the flu is greater than 0.05. Therefore null and alternative hypotheses use this proportion.
Answer=7/8
7x3=21
12x2=24
21/24=7/8
