Provide an appropriate response.If a has exactly one real square root, what must be true of a?

A. a is nonnegative
B. a is negative
C. a is positive
D. a is equal to zero

Answer: D

Mathematics

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Establish the identity.sin2(-?) + cos2(-?) = 1

What will be an ideal response?

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Solve the problem. Round to the nearest cent.Cal borrowed $8486 on December 15. The loan, at an interest rate of 8%, is for a term of 31 days. Find the date due and the future value for this loan.

A. January 16, $11,117.54 B. January 15, $8544.46 C. January 15, $8515.23 D. January 16, $11,117.19

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Translate to a proportion and solve. Round to the nearest hundredth, if necessary.3.5 is what percent of 18.8?

A. 0.19% B. 5.37% C. 18.62% D. 537.14%

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Mathematics

Find the sum.

A. -  (1 - 7n)
B. - 30 (1 - 7n)
C. -  (1 - 7n-1)
D. - 5 (1 - 7n)

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Mathematics