Illustrate Goldback's conjecture for the following number.12
A. 22 ? 3
B. 6 + 6
C. 3 + 9
D. 5 + 7
Answer: D
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Use the LCD to simplify and solve.
(r + 6) = 
(r + 8)
A. 3 B. -4 C. 4 D. 6
Provide an appropriate response.A student is trying to solve the equation (x + 2)(x - 4) = 6. The student has set x + 2 = 6 and x - 4 = 6 and found that two solutions x = 4, x = 10. The student checks his or her results by plugging in his or her solutions into the original equation and finds that they do not work. How would you advise him or her?
What will be an ideal response?
Solve the problem. Give the answer to the nearest thousandth if necessary.A rectangle has a length of 
and a width of 
. What is the best estimate for its dimensions?
A. 17 by 9 B. 16 by 8 C. 16 by 9 D. 17 by 8
Use a calculator to find the value of the expression rounded to two decimal places.sin-1 (0.4)
A. 1.16 B. 23.58 C. 66.42 D. 0.41