Find the sum of the even numbers shown below. 2+4+6+8++66+68+70

Write a numerical expression that satisfies all of the following conditions. 1.)the only number used in the expression is 5 2.)at least one exponent other than 1 is used 3.)when the expression is evaluated, the answer is greater than 40 and less than 50

What is the value of x? enter your answer in the box. photo attached.

Compute the standard deviation of the following set of data to the nearest whole number. 10, 10, 15, 20, 25