Raquel bought a total of 18 roses and orchids. Roses were $2.50 each while orchids were $4.00 each. If she spent $54.00, how many of each did she purchase?

       6

Step-by-step explanation:

18 Roses were bought lets now split 18

        | | | | | | | | |           | | | | | | | | |

We split 18 into 6

WHPH - WORK HARD PLAY HARDER

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;