Right ! solve the system of equations below. x + y = 7 2x + 3y = 16

and .

Step-by-step explanation:

We have been given a system of equations. We are asked to solve our given system.

From equation (1), we will get:

Upon substituting this value in equation (2), we will get:

Now, we will substitute in equation (1).

Therefore, the point is solution for our given equation.

gaddgad

step-by-step explanation:

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;