Math Plane 

2-17-13

Vectors and (the) Force

1) Why did the 2 stubborn vectors get lost?

2) Which part of a square is Darth Vader's favorite?

(click lower right corner of image to view)

Vectors and Star Wars Riddle Answers

2-10-13

Sequence Question

In the sequence 8/9, 4/3,2, ... ,

what is the fifth term?

ANSWER

Learn more about sequences and series...

2-2-13 

Degrees and Temperature Units

1) When were the Fahrenheit and Celsius units introduced?

2) 0C degrees is equivalent to 32F degrees. What is the Kelvin equivalent?

3) Convert 10C degrees to Fahrenheit.

4) Convert 100F degrees to Celsius (Centigrade).

Temperature Units SOLUTIONS



1-25-13

Decay & Half-Life Example

Assume the above comic has an area of 32 square inches.  If the area has a half-life of 10 seconds,

a) what is the area after 10 seconds?

b) what is the area after 30 seconds?

c) what is the area after 16 seconds?

d) at what time will the area be 20 square inches?

e) at what time will the area reach zero?        

SOLUTIONS at the right ----->



Free Half-Life Calculator from calculatoredge.com (in the chemical engineering list)

1-6-13

Three random math questions. Answer carefully!

1) A ribbon is 24 inches long. If you want to divide it into 2-inch strips, how many snips will it take?

2) If it takes 20 minutes to boil one egg, how long will it take to boil 4 eggs?

3) Dave and Joe play a game with 2 dice. They each throw one die. If the colors are the same, Dave wins. If the colors are different, Joe wins.

One die has 5 red sides and 1 white side. If their chances of winning are EVEN, how many red and white sides does the other die have?

ANSWERS

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