Scientific Notation is a number between one and ten times ten to the power of a number. I'll go through the steps below. 1: get a decimal from 130400000 but count the number of times that you move the decimal. <span>0 - 130400000. 1 - 13040000.0 2 - 1304000.00 3 - 130400.000 4 - 13040.0000 5 - 1304.00000 6 - 130.400000 7 - 13.0400000 <u>8 - 1.30400000 </u>2: So you need to move the decimal 8 times to the left, and you get 1.304! scientific notation is just moving a decimal... sooo... </span><span><u><em>1.304 X10^8 </em><em /></u> That is the answer. X10 is used with every scientific notation problem, and 8 is the number of times you'll have to move the exponent to get 130,400,000</span><span />
It's less confusing if you only think about one of them at a time.
A). Change the whole thing to all inches. (Multiply the 8-ft by 12inches/foot.) Then, when you have it all in one number of inches, multiply that number of inches by (2.54 centimeters/inch).
B). 1 ounce is the weight of 28.35 grams (on Earth). Multiply the 300g by (1 ounce / 28.35 g).
C). Multiply the liters by (0.264 gallon/liter) Multiply the km by (1 mile / 1.609 km). Then you'll have a fraction that actually means (a number of gallons) divided by (a number of miles). Do the division, and you'll have the gallons per mile.
D). The area of any rectangle is (length) times (width). The area of this living room is (13-ft times 14-ft), and that's in square feet. You know how much 1 square foot of carpet costs. Just multiply that price by the number of square feet that you need.
The amount he will have left over is 14. Because there are three pizzas that need 2 cups each. (2x3=6) If he bought a 20 cup bag then he has 14 cups left over. (20-6=14)