Asweater is on sale for 20% off the original price, x.

which statement explains why x − 0.2x and 0.8x can each find the sale price of the sweater?

a. an increase of 20% is the same as dividing by 80%.

b. an increase of 20% is the same as multiplying by 80%.

c. a decrease of 2% is the same as multiplying by 80%.

d. a decrease of 20% is the same as multiplying by 80%.

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

If a line is defined by the equation y = 5x + 2, what is the slope?

Arandomized controlled trial is designed to evaluate the effect of metoprolol in patients with heart failure. while preparing for statistical analysis, the researcher reviews some common types of statistical errors. which of the following statements is true regarding a type i error in a clinical study? a. the study is not significantly powered to detect a true difference between study groups. bthe null hypothesis is true but is rejected in error. c. the null hypothesis is false but is accepted in error. d. type i error is also known as beta and is usually 0.1 or 0.2. e. type i error depends on the study's confidence interval.