Scale Figures Painted
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Scale Figures Painted
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PLEASE!!!!!!!!!!!! I can't figure out these hard math problems!!!!!!!!! Hurry! Please?
1. Two wooden cubes sit in a carpenter's shop. One is twice as tall as the other. If the small cube will take 1oz. of paint cover it completely, how much paint is needed to cover the larger cube?
2. Write expressions using variables for the area and perimeter of a rectangle with length 2w + 9 and width w?
3. What part of $1000 is a penny? Express your answer using exponets.
4. Sheila sketches the floor plan of a house which measure 40ft by 60ft at its greatest dimension. She makes her sketch on grid paper which is marked 30 units wide and 40 units long. What scale factor should she choose that would allow her to make the largest possible drawing?
5. Write a recursive formula for an = 2n.
6. (2x + 1)^2
7. (2x + 1)(2x - 1)
You didn't state the problem for 6 and 7.
3 makes no sense to me, unless it's a question about exponential notation, in which case the answer is 10^(-5) or 1/10^5.
The answer to 1 is 2^2 (why?). And you know what that is.
2 is very easy. Settle down and do it yourself.
5. Hint: What is a(n) - a(n-1)?