(5x - 2)(8x - 7)
Find each product by step by step

I can help you because  I am learning  the same time. ok

Step-by-step explanation:

1 step (5x-2) = (8x-7)

expand (8x-7) = 8x-7 so 5x-2=8x-7

add 2 to both  side 5x-2+2=8x-7+2

simplify 5x=8x-5

subtract 8x from both side 5x-8=8x-5-8

simplify -3x=5

divide both sides by -3

3x 3 =5x

simplify x=5 over 3

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;