Round the whole number to the given place value.437,488 to the nearest ten-thousand
A. 437,000
B. 430,000
C. 500,000
D. 440,000
Answer: D
Mathematics
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Sketch the surface z = f(x,y).f(x, y) = 1 - x - 2y
A. 
B. 
C. 
D. 
Mathematics
Add. Simplify the result whenever possible.
s2 + 
s2
A. 
s4
B. 
s2
C. 
s2
D. 
s4
Mathematics
Let z vary jointly with x and y. Find the constant of variation k. Then, use 
to find z when x = 5 and y = 7.z = 4 when x = 10 and y = 2
A. k = 0.4; z = 14 B. k = 40; z = 1,400 C. k = 80; z = 2,800 D. k = 0.2; z = 7
Mathematics
Solve the problem by estimating.Juan travelled for 6 weeks in South America last year and spent $3179 while he was there. Estimate the average amount he spent each day. Round the number of days to the to the nearest ten and the amount of money spent to the nearest hundred.
A. $70 B. $700 C. $80 D. $800
Mathematics