40% of what number is 28

5[3 (x+4) - 2 (1-x) ]-x-15=14x+45

Cai collected 2 1/2 times as munch as Mark. Mark collected 2/3 as much as Jen. Who collected the most? Who collected the least? Explain

What is the answer to 345 ft./m

Which expression is represented by the diagram? 10 negative tiles. 4 are crossed out. Negative 6 minus (negative 4) Negative 6 minus 4 Negative 10 minus 4 Negative 10 minus (negative 4)

Susan's investment portfolio currently contains three stocks that have a total value equal to $100,000. The beta of this portfolio is 1.5. Susan is considering investing an additional $50,000 in a stock that has a beta equal to 3.

The height reached by amal's rocket was 1/4 of the height reached by min's rocket. Amal's rocket REAched a height of 15 meters. Which equation could be used to find the height reached by min's rocket

a lab technician must screen 175 slides under the microscope each week. if she works 7 hours a day, 5 days a week, how many slides, on average, must she screen in one hour?

Lisa bought five CDs from the store. The price of each CD was the same. After she bought the CDs, her account balance showed a change of - $64.95. What would have been the change to Lisa's account balance had she only bought one CD from the store?

how do i add this 9 7/8 + 6 5/8 + 3 3/8

The displacement, d, in millimeters of a tuning fork as a function of time, t, in seconds can be modeled with the equation d = 0.6 sin (3520rt). What is the frequency of the tuning fork? A, 1/3520 Hz B. 1/1760 Hz C. 1760 Hz D. 3520 Hz