Use "intersect" on a graphing calculator to solve the equation. Round to two decimal places, if necessary.3(x - 3) = 5(x - 4)
A. -0.5
B. 0.5
C. 5.5
D. -5.5
Answer: C
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Express the exercise as a system of linear equations, then find the solution. Use a calculator where appropriate.Aviva has a total of 52 coins, all of which are either dimes or nickels. The total value of the coins is $4.25. Find the number of each type of coin.
A. 24 nickels; 28 dimes B. 33 nickels; 19 dimes C. 21 nickels; 31 dimes D. 19 nickels; 33 dimes
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); 
= (z2 sin xy)(sin yz2)- (x cos xy)(cos yz2); 
= 2(yz sin xy)(sin yz2)
B. 
= (y cos xy)(cos yz2); 
= (x cos xy)(cos yz2) - (z2 sin xy)(sin yz2); 
= 2(yz sin xy)(sin yz2)
C. 
= (y cos xy)(cos yz2); 
= (x cos xy)(cos yz2); 
= -2(yz sin xy)(sin yz2)
D. 
= (y cos xy)(cosyz2); 
= (x cos xy)(cos yz2) - (z2 sin xy)(sin yz2); 
= -2(yz sin xy)(sin yz2)
Find the derivative at each critical point and determine the local extreme values.y = 
A. 
B. 
C. 
D. 
Simplify.
A. 
B. 
C. 
D. - 