will get 20 points! 8x−4y=16 and 8x+4y=16 solved with systems of equations with graphing

The solution is (2, 0)

Step-by-step explanation:

To solve the system of equations, simply add the two equations together to get the y values to cancel.

8x - 4y = 16

8x + 4y = 16

16x = 32

x = 2

Now that we have the value of x, we simply put it into the equation to get the y value.

8x - 4y = 16

8(2) - 4y = 16

16 - 4y = 16

-4y = 0

y = 0

the circle one

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;