If an argument reads

p?q
q?p,
then we can conclude p _________________ q.

Fill in the blank(s) with the appropriate word(s).


if and only if

Mathematics

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Find all real solutions to the system of equations using the addition method.2x2 + y2 = 66  x2 + y2 = 41

A. (5, 4), (5, -4), (-5, 4), (-5, -4) B. (4, 5), (-4, 5), (4, -5), (-4, -5) C. (4, 5), (-4, -5) D. (5, 4), (-5, -4)

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?Express the equation in logarithmic form. ?    ? 

A. ?
B. ?
C. ?
D. ?

Mathematics

Change the mixed number to an improper fraction.7

A.
B.
C.
D.

Mathematics

Suppose the number of daily sales of a product was found to be given by , x days after the start of an advertising campaign for this product. Find the average daily sales during the first 25 days of the campaign-that is, from

style="vertical-align:middle;" /> to . Round your answer to the nearest dollar.
?

A. $133
B. $130
C. $127
D. $265
E. $255

Mathematics