MathGuru
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Substitute 1 for x. Simplify. If f(x) = 4x3, find the following. f(1)

You have two formulas to use: A = lw >area = length times width P = 2l + 2w >perimeter You know the perimeter, which is 200m of fencing. Let length = x Now let's solve the perimeter equation for w, using what we know: 200 = 2x + 2w 200  2x = 2w
Responses
Newest responses posted by MathGuru

Fourth root of 80y cubed

See your most recent post.

Yes, you are correct. Read about the Central Limit Theorem. It might help to clarify the concepts for you.

How about D?

Normal distribution: 99.7% is approximately +/ 3 standard deviations around the mean. 0.3% is outside those limits.