If m workers can do a job in d days, how long would it take 40 workers to do the same job?

Six math books and three English books are on a shelf. How many ways can they be arranged if the math books are kept together and the English books are kept.together?

The latitude of Princeton, New Jersey, is $40.5^{\circ}$ north of the equator. How far is it from Princeton to the equator if the diameter of the earth is 7920 miles?

A solution of 100.0 mL of 0.200 M KOH is mixed with a solution of 200.0 mL of 0.150 M

$$NiSO_4$$

What is the limiting reactant?

The tiger trotted through an arc of $\pi / 6$ radians along a circular arc of radius 1000 feet. How far did the tiger trot?

For the equation y = 2x^2 − 5x + 18, choose the correct application of the quadratic formula.

A) x equals negative five plus or minus the square root of negative five squared minus four times two times eighteen, all divided by two times two

B) x equals five plus or minus the square root of negative five squared minus four times two times eighteen, all divided by two times two

C) x equals negative two plus or minus the square root of two squared minus four times negative five times eighteen, all divided by two times negative five

D) x equals two plus or minus the square root of two squared minus four times negative five times eighteen, all divided by two times negative five

Which expresses the equation below in words?

$$3(x - 4) = 7x + 5$$

Choose best answer from the following :$\newline$ (A) Three times a number minus four is seven times that number plus five.$\newline$ (B) Three times a number minus four is seven times the sum of that number and five.$\newline$ (C) Three times the difference of a number and four is seven times that number plus five.$\newline$ (D) Three times the difference of a number and four is seven times the sum of that number and five.

How many positive integers less than 150 are there such that all the digits are odd?

How many ways can the letters A, B, C, D, E, and F be arranged in a row 4 at a time if neither A nor C can be first or third and D cannot be fourth? Repetition is permitted.

One clay brick weighs 5.76 pounds. The brick is 8 inches long and

$$2\frac{1}{4}$$

inches wide. If the clay weighs 0.08 pounds per cubic inch, what is the volume of the brick? Find the height of the brick.

What is the weight of a 1-kilogram brick resting on a table?

It took Sally 3 hours to go 75 miles downstream and it took her 5 hours to travel back upstream to her starting position. What was the speed of her boat in still water and what was the speed of the current in the river?

The average speed for the first 45 miles was 15 mph and the average speed for the next 50 miles was 25 mph. What should be the speed for the next 85 miles so that the overall average speed would be 18 mph?

Ten years ago Odessa was twice as old as Nat was then. Ten years from now, twice Odessa's age will be 10 less than thrice Nat's age then. How old will each person be 45 years from now?