Answer:
30 tennis balls
Step-by-step explanation:
30 to 50 is equal to 3 to 5. And if there are 30 baseballs for every 50 tennis balls, and there are 80 balls in total, well...
30+50=80
So there are 30 tennis balls
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Answer:
24
Step-by-step explanation:
The sum of the exterior angles of a polygon = 360°
Divide this by the size of 1 exterior angle to find number of sides, that is
number of sides = 
= 24
Scientific notation consists of a coefficient (here 5.14) multiplied by 10 raised to an exponent (here 5). To convert to a real number, start with the base and multiply by 5 tens like this: 5.14 × 10 × 10 × 10 × 10 × 10 = 514000.0. Multiplying by tens is easy: one simply moves the decimal point in the base (5.14) 5 places to the right, adding extra zeroes as needed.
<span>Convert from Real Number to Scientific Notation: </span>
Here we wish to write the number 0.000345 as a coefficient times 10 raised to an exponent. To convert to scientific notation, start by moving the decimal place in the number until you have a coefficient between 1 and 10; here it is 3.45. The number of places to the left that you had to move the decimal point is the exponent. Here, we had to move the decimal 4 places to the right, so the exponent is -4.
