B) 4(5x - 2) = 2(9x + 3)

20x-8=18x+6

Step-by-step explanation:

20x-18x=6+8()2x=14()x=14/2=7

x=7

Step-by-step explanation:

Step 1: Simplify

20x-8=18x+6

Step 2: Inverse

We will move variables with variables and numbers with numbers.

(Subtract 18x from both sides)

2x-8=6

(Add 8 on both sides)

2x=14

Step 3: Solve

(Divide both sides by 2)

x=7

cosine

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;