PLEASE HELP ME ASAP For which system of equations is the graph a pair of parallel lines?

A.{y=23x−4y=5+23x
B.{y=79x+9y=9−79x
C.{y=15x−1y=5x−1
D. y=34x+8y=8−43x

nada

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;

ask the math teacher she or he would know lol.

step-by-step explanation: