Step-by-step explanation:

5x-9y=-65
10x-3y=20
Multiple the first equation by 2
10x-18y=-130
10x -3y=20
Then subtract the two equations to get rid of the x
21y=-150
Divide the -150 by 21
Y=-7.14
Plug the y into the original equation. (Either one)
5x-9(-7.14)=-65
5x-64.28=-65
Then add 64.28 to the -65
5x=-0.72
Divide by 5
X=-0.144
I hope this is right
Answer:
17,190.79 cm ³
Step-by-step explanation:
24429.02 - 7238.23
Check the picture below.
make sure your calculator is in Degree mode.
Answer:
95% Confidence interval: (0.0415,0.0647)
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 1430
Number of people who responded that astrology was very scientific, x = 76

95% Confidence interval:


Putting the values, we get:

95% confidence interval for the population portion with this belief: (0.0415,0.0647)