4. Select the correct answer.
Simplify the expression so there is only one positive power for each base.
(5-2. 4-4)-2
OA
54. 48
1
B.
54 48
C.
1
54 . 46
D. 54.46
54246
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Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Which choice has the correct steps in graphing the solution set to the following inequality? -45_> 20x-5y

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