Which number is written in scientific notation?

A) 7.8 x 10^-5

B) 3.4 x 100^2

C) 0.84 x 10^6

D) - 5 x 10^-12

Which best describes how specialized producers decrease their opportunity costs? by reducing production costs by focusing on target markets by increasing production of certain items by limiting the types of goods produced

2/3 of William's shirts are white, and remaining 8 are blue. What is the total number of shirts that William has?

the length of a rectangle is 5 less than twice its width. if the perimeter is 26 meters, find the dimensions of the rectangle

A company wishes to test LaTeX: H_0 H 0 : LaTeX: p=0.75 p = 0.75 against LaTeX: H_a H a : LaTeX: p/ne0.75 p? 0.75, where LaTeX: p p refers to the unknown proportion of skilled workers in the company.

Amelie needs 2| 3/8 cups flour for one recipe and 1| 1/3 cups of flour for another recipe. How many cups of flour does Amelie need in all? Enter your answer as a mixed number in simplest form by filling in the boxes.

23. You spend $55 shopping for birthday gifts. You buy one of your friends 2 gift certificate for $15, and your other friend a pair of shorts for $16. You also buy your older brother 2 compact discs that each cost d dollars.

You paint 12 wall in 14 hour. At that rate, how long will it take you to paint one wall?

3. The circular stained glass window has diameter of 12 feet. What measurement is closest to the circumference of the window in feet?

The post office will accept packages whose combined length and girth is at most 42 inches. (the girth is the perimeter/distance around the package perpendicular to the length; for a rectangular box, the length is the largest of the three dimensions.

Is 27 a perfect square?