6.
In a museum there is a round window decorated with circular
rings of the same size as in the diagram. The radius of the
window is 45 cm. Calculate the area that is not covered by the
decoration. (Use a = 3.142)

The factorization of 8x3 -125 is (2x-5)(jx2 +kx+25)

The amount of money, in dollars, in an account after t years is given by a = 1000(1.03)^t. the initial deposit into the account was $_^a0 and the interest rate was _a1% per year. only enter numbers in the boxes. do not include any commas or decimal points^t. the initial deposit into the account was $__^a0 and the interest rate is % per year.

Two lines that do not intersect are skew. always sometimes or never