Answer the question.Why is the answer (x2 - 81)(x2 + 81) not the correct answer to the instruction "Factor (x4 - 6561) completely"?
What will be an ideal response?
The term x2 - 81 can still be factored as (x - 9)(x + 9).
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Solve the problem.Find the amount of money in an account after 6 years if $2400 is deposited at 5% annual interest compounded monthly.
A. $3216.23 B. $3227.73 C. $3233.64 D. $3237.64
Solve the problem.Bob bought a square tarp and a rectangular tarp whose length is 4 more that its width. The combined area of both tarps is 817 square feet. The price of the square tarp is $2 per square foot and the price of the rectangular tarp is $1 per square foot. If Bob paid $229 more for the rectangular tarp than the square tarp, find the length of the side of the square tarp.
A. 18 ft B. 14 ft C. 23 ft D. 12 ft
Solve the problem.Determine which of the following sets is a subspace of Pn for an appropriate value of n.A: All polynomials of the form p(t) = a + bt2, where a and b are in ?B: All polynomials of degree exactly 4, with real coefficientsC: All polynomials of degree at most 4, with positive coefficients
A. C only B. A only C. A and B D. B only
Solve the problem.Suppose that you are to cut a piece of ribbon for a wreath that is 115 inches long into two pieces so that one piece is 4 times as long as the other. How long is each piece of ribbon?
A. 29 in., 69 in. B. 29 in., 115 in. C. 23 in., 115 in. D. 23 in., 92 in.