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Answers by Charles C.

Dyana, this question is better solved by looking at where these elements fall in the periodic table. Elements that belong in the same group have similar chemical properties and hence are considered chemically similar. The question asks about arsenic, so arsenic is our reference point. Arsenic...

The decimal number 4372.254257 can be written in scientific notation as  4.372254257 × 10^3   The conversion rules are that the first number is between 0 and 10 and the second number is raised to the tenth power.    

Pre Calculus (answer)

This is picking 5 out of 52 balls without replacement. So it is 52 * 51 * 50 * 49 * 38 = 311,875,200 So the answer is c) 311,875,200

To solve this, we will use this property of logarithms: If x= a ^ y then log a (x) = y   , where a is the base   So if e^9 = y  , or y = e^9 then log e (y) = 9 NB: log e (y) is also referred to as the natural log of y, or ln y. So it can also be written...

a) Let's write the algebraic equations: Profit = Band pay - 3*Ticket cost  Each band member's pay = Profit / Number of people   b) Now we solve: Profit = $1250 - 3*$150 = $1250 - $450 = $800 The band made $800 Profit. Each band member's pay = $800/5 = $160...

The house should be priced at $113.89 /sq ft * 1800 sq ft = $205,002. This is approximately $205,000 if rounded.

Ratio Question (answer)

Let's pause and think about an important mathematical phrase here. What does "decreased two times" mean? Don't confuse this with "decreased by two" which would mean there are 6-2 =4 workers left. If the number of workers decreased two times, the number of workers left would...

The solution to this problem depends on what 'change' means. If it means lower denomination coins like quarters, dimes, nickels, and pennies then here is the solution for largest change.  We want to maximize our number of coins, but minimize the total value above $2.00.   Solution: Person...