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3 years ago

PLEASE HELP WITH INEQUALITIES

Mathematics

2 answers:

lara31 [8.8K]3 years ago

8 0

Answer: 1 is greater 2 is less 3 is greater 4 is less

Step-by-step explanation:

Lubov Fominskaja [6]3 years ago

5 0

Answer:

28. x > 1 (greater than)

29. x </= -1 (less than or equal to)

30. x >/= 3 (greater than or equal to)

31. x < 0 (less than)

Step-by-step explanation:

If the circle on the graph is open, it's "less than" or "greater than", but not "equal to". The open circle means that number is excluded from the answer set.

If the circle on the graph is closed, it's "less than or equal to" or "greater than or equal to"

Then the "less than" or "greater than" part depends on which way your arrow is pointing.

Please lmk if you have questions.

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-Dominant- [34]

The equation of the trend line is ŷ = 0.15x - 23.21

<h3>How to determine the average rate of change of the trend line?</h3>

The points are given as:

hr =>808, 768, 655, 684, 637, 619, 613, 609, 563

w => 93, 94, 66, 81, 86, 75, 61, 69, 55.

Using a graphing calculator, we have the following calculation summary:

Sum of X = 5956
Sum of Y = 680
Mean X = 661.7778
Mean Y = 75.5556
Sum of squares (SSX) = 50569.5556
Sum of products (SP) = 7547.1111

The regression equation is represented as:

ŷ = bX + a

Where:

b = SP/SSX

b = 7547.11/50569.56

b = 0.14924

a = MY - bMX

a = 75.56 - (0.15*661.78)

a = -23.20961

This gives

ŷ = 0.14924X - 23.20961

Approximate

ŷ = 0.15x - 23.21

Hence, the equation of the trend line is ŷ = 0.15x - 23.21