Lena buys a brand new washing machine and a dryer for $7500 .

The washing machine costs 70%
of the price of the dryer.

What is the price of the dryer?

$2250

Step-by-step explanation:

if the cost of the washing machine is 70% of the cost she paid. then the cost of the dryer must be:

100-70 =30%

Now, to find the cost of the dryer, you just have to find 30%of 7500

30/100x 7500 = 2250

Thus, the dryer costs $2250.

Hope this helps.

Good luck

0.85 or 85%

step-by-step explanation:

1) divide 23 by 27

2) round the decimal to the nearest 10

3) so your answer would be 0.85 or 85%

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;