Find the selling price if the cost price of a kettle is $55 and the store suffered a loss
of 15%6 on it​

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.

What is the perimeter of an equilateral triangle if each side is (x+3)?

Find the measure of angle c in the following triangle.