First use front-end rounding to write an estimate of the answer, and then multiply fully to obtain an exact answer.EstimateProblem
?
A. Estimate: 280, exact: 276.9
B. Estimate: 281, exact: 277.9
C. Estimate: 28, exact: 27.69
D. Estimate: 279, exact: 275.9
Answer: A
Mathematics
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Solve the linear equation symbolically.12x - 15x + 17x = 56 - 24x + 10x
A. -2 B. -3 C. 2 D. 3
Mathematics
Find the given power. Write answer in rectangular form.(-5
+ 5
i)3
A. 50
+ 50
i
B. 15
+ 15
i
C. 5
+ 5
i
D. 500
+ 500
i
Mathematics
Solve.|7x + 4| = |9 - 10x|
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The pH of a chemical solution is given by the formula pH = -log10[H+] where [H+] is the concentration of hydrogen ions in moles per liter. Find the pH if the [H+] = 8.4 x 10-1.
A. 1.92 B. 1.08 C. 0.08 D. 0.92
Mathematics