First use front-end rounding to write an estimate of the answer, and then multiply fully to obtain an exact answer.EstimateProblem
?
A. Estimate: 4, exact: 4
B. Estimate: 0.1, exact: 3.9
C. Estimate: 1, exact: 3
D. Estimate: 0.4, exact: 0.4
Answer: A
Mathematics
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Find the value of the variable that satisfies the equation.2x + x = 24
A. x = 
B. x = 12
C. x = 7
D. x = 8
Mathematics
Find the circumference and area of a circle having the given diameter or radius. Use 3.14 for ?. Round your results to the nearest tenth.r = 8.5 mi
A. 26.7 mi; 907.5 mi2 B. 26.7 mi; 106.8 mi2 C. 53.4 mi; 226.9 mi2 D. 53.4 mi; 53.4 mi2
Mathematics
Find the vertex of the parabola.
?
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve the equation.2(1 + 2x) = 8
A. {2} B. {4} C. {-1} D. {1}
Mathematics