Solve and graph. Write the answer in set-builder notation.f + 9 < 21
A. {f
f > 12}
B. {f
f ? 12}
C. {f
f ? 12}
D. {f
f < 12}
Answer: D
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Solve.The sum of the squares of the digits of a positive two-digit number is 61, and the tens digit is 1 more than the units digit. Find the number.
A. 45 B. 65 C. 56 D. 54
Find the second derivative.y = 3x2 + 9x + 4x-3
A. 6 + 48x-5 B. 6 + 48x-1 C. 6x + 9 - 12x-4 D. 6 - 48x-5
Give a verbal statement equivalent to the given inequality involving the number x.-14 < x ? -7 or 5 < x < 14
A. x is greater than -14 and less than or equal to -7, or greater than 5 and less than 14. B. x is greater than -14 and less than -7, or greater than 5 and less than 14. C. x is greater than -14 and less than -7, or greater than 5 and less than or equal to 14. D. x is greater than or equal to -14 and less than -7, or greater than 5 and less than 14.
The triangles are similar. Find the missing side, angle or value of the variable.
a = 13b = 12c = 5d = 26e = 24
A. x = 7 B. x = 5 C. x = 15 D. x = 10