Derek earned these scores on the first three tests in Econ this term 86,88,& 78 What is the lowest score that derek can earn on the fourth and final test of the term if he wants to have an average o at least 83

juanita ran 8.3 miles in week 1 and 12.09 miles in week 2 she used the subtraction below to determine how much farther she ran in week 2 than in week 1

2x^2y^3z^2 · 4xy^4x^2 Multiply and simplify

Given that sin (x) = 7/11, find cos (90-x). A. 4/11 B. 7/11 C. 11/7 D. 11/4

Consider a population variable measured in square-feet. The population standard deviation is 15 square-feet. How many observations do we need in our sample in order to be able estimate a 95% confidence interval with only 2.

Multiply perfect Expand If necessary, combine like terms. (223) (223) Stuck? Use a hint

Write as a decimal 1 5/8

On a scale drawing, 1/4 inch = 1 foot. What are the dimensions on the scale for a room that is 27 feet by 20 feet?

Work out the height of a triangle with a base 6cm and area 27cm2

How long will it take a person to double $2000 at a 6% interest rate, compounded annually?

Is the statement 2 (3+5x) = 6+5x always true?