The formula used to calculate body mass index is BMI=
? 703 where w = weight in lb and h = height in inches. If Matthew is 6 ft 3 in tall and weighs 220 lb, calculate his BMI.
A. 38.97
B. 27.5
C. 23.79
D. 20.6
Answer: B
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Find all the first order partial derivatives for the following function.f(x ,y, z) = (sin xy)(cos yz2)
A. 
= (y cos xy)(cos yz2); 
= (x cos xy)(cos yz2); 
= -2(yz sin xy)(sin yz2)
B. 
= (y cos xy)(cosyz2); 
= (x cos xy)(cos yz2) - (z2 sin xy)(sin yz2); 
= -2(yz sin xy)(sin yz2)
C. 
= (y cos xy)(cos yz2); 
= (z2 sin xy)(sin yz2)- (x cos xy)(cos yz2); 
= 2(yz sin xy)(sin yz2)
D. 
= (y cos xy)(cos yz2); 
= (x cos xy)(cos yz2) - (z2 sin xy)(sin yz2); 
= 2(yz sin xy)(sin yz2)
Solve the problem.If the radius of a sphere is r feet, then the volume of the sphere is 
?r3 cubic feet. Find the volume of a sphere with radius of 9 feet. Round your answer to two decimal places.
A. 309.39 cubic feet B. 9160.91 cubic feet C. 3053.64 cubic feet D. 1526.82 cubic feet
Solve the problem.A certain radioactive isotope has a half-life of approximately 1700 years. How many years would be required for a given amount of this isotope to decay to 75% of that amount?
A. 425 yr B. 631 yr C. 706 yr D. 3400 yr
Divide and simplify.
A. 421
B. 47
C. 43
D. 