Find a number to replace the question mark so that the given fractions are equivalent.
= 
A. 46
B. 23
C. 22
D. 69
Answer: D
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Find 
and 
.f(x, y) = 10x - 10y2 - 6
A. 
= 10; 
= -20y
B. 
= 10x; 
= -20y
C. 
= -20y; 
= 10
D. 
= 4; 
= -20y - 6
Find the constant of proportionality for the stated conditions: z is directly proportional to the sum of x and y, and when src="https://sciemce.com/media/3/ppg__cognero__2.6_Proportion_and_Variation__media__926b1ba5-ad7f-4485-8393-c077879cb50a.PNG" class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_a02714e1163f44d991c03522b" />.
, 
and
?
A. ?
B. ?
C. ?
D. 
E. ?
Solve the equation by completing the square.x2 - 4x + 1 = 0
What will be an ideal response?
Find the value of the indicated trigonometric function for an acute angle ? in a right triangle.tan ? = 
Find cot ?.
A. 
B. 
C. 
D. 