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Sati [7]
3 years ago
14

Sam entered three functions into a graphing calculator, y1 = x + 2, y2 = x2 + 2, and y3 = 2x. A portion of the table created by

those functions is shown below.
x 2,3,4
y1 4,5,6
y2 6,11,18
y3 4,8,16
Choose = , < , or > so that each statement is true.
When x = 0, y1__________ y2
When x = 5, y2__________ y3
Choose y1, y2, and y3 so that the statement is true.
When x = -1,____ <____ < _____.
Mathematics
1 answer:
V125BC [204]3 years ago
4 0
For this case we have the following functions:
 y1 = x + 2&#10;&#10;y2 = x ^ 2 + 2&#10;&#10;y3 = 2 ^ x
 
 When x = 0 we have:
 For y1:
 y1 = 0 + 2&#10;&#10;y1 = 2
 For y2:
 y2 = 0 ^ 2 + 2&#10;&#10;y2 = 0 + 2&#10;&#10;y2 = 2
 Therefore, we have to:
 y1 = y2&#10;

 When x = 5 we have:
 For y2:
 y2 = 5 ^ 2 + 2&#10;&#10;y2 = 25 + 2&#10;&#10;y2 = 27
 For y3:
 y3 = 2 ^ 5&#10;&#10;y3 = 32
 Therefore, we have to:
 y2 \ \textless \ y3&#10;

 When x = -1 we have:
 For y1:
 y1 = -1 + 2&#10;&#10;y1 = 1
 For y2:
 y2 = (-1) ^ 2 + 2&#10;&#10;y2 = 1 + 2&#10;&#10;y2 = 3&#10;
 For y3:
 y3 = 2 ^ {-1}&#10;&#10;y3 = 1/2&#10;&#10;y3 = 0.5
 Therefore, we have to:
 y3 \ \textless \ y1 \ \textless \ y2&#10;

 Answer:
 
When x = 0, y1 = y2
 
When x = 5, y2 <y3
 
When x = -1, y3 <y1 <y2
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358 is equal to 300+50+8.

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(d) Given that n(§) = 96, n(A) = 50 and n(B) = 60. Find the maximum and minimum values for n(An B).
frez [133]

Step-by-step explanation:

the max. value is when the smaller set (A) is completely contained in the larger set (B).

then n(A n B) is n(A) = 50.

the set intersection between A and B cannot get bigger than that. or A gets bigger ...

after all, the intersection means it is a set of all elements that exist in BOTH sets.

but then there must be other elements besides A and B in the universal set too, because n(universal set) = 96, and n(A u B) would be only 60.

the min. value could be the empty set or 0. but because n(universal set) = 96, and n(A) + n(B) = 110 and larger than 96, it means that there have to be some shared elements. at least 110 - 96 = 14 elements.

in this case there cannot be other elements in the universal set than A and B. and n(universal set) = n(AuB) = 96.

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1 year ago
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