A cuboid is thrice as long as it's breadth and is 4 cm high if it's volume is 300cm² find its length and breadth and total area

Step-by-step explanation:

v=l×b×h

300cm²=4×3x×x

300÷12=x²

x=5

3x=3×5=15

a=15×5

(-5,-28)

i graphed to on desmos.

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;