The area of a rectangle is given by the expression 36cd +90d. Which of the following are possible dimensions for the rectangle?
A9 by 4C +10d
B 36 by CD + 5D
C6D by 6C +15
D 18 d by 2c +D

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You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?

How do you find p(a and b) if a and b are independent events for two or more actions, such as tossing a coin twice and finding p(heads and heads)? 2. how do you find p(a or b) if a and b are independent events for one action, such as spinning a four-color spinner once and finding p(red or blue)?