Find the solution to the system by addition (elimination) method.7x + 56y = 56 4x - 7y = -7
A. (1, 0)
B. (0, 0)
C. (0, 1)
D. (1, 1)
Answer: C
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Solve the problem.Anne and Nancy use a metal alloy that is 20% copper to make jewelry. How many ounces of a 14% alloy and a 24% alloy must be mixed to form 100 ounces of the desired alloy?
A. 30 at 14% and 70 at 24% B. 60 at 14% and 40 at 24% C. 40 at 14% and 60 at 24% D. 70 at 14% and 30 at 24%
Find the value of the constant k so that the function is a joint probability density function on D.
?
What will be an ideal response?
Write an equation in x that models the conditions. Do not solve the equation.63% of 88 is what number (x)?
A. 0.63 = 88x B. 0.63 x= 88 C. 0.63 + 88 = x D. 0.63 ? 88 = x
Find the unknown number in the proportion. Write your answer as a whole number or a mixed number if possible.
= 
A. x = 
B. x = 
C. x = 
D. x = 