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topjm [15]
3 years ago
5

What is 20/40 as a decimal

Mathematics
1 answer:
OverLord2011 [107]3 years ago
4 0
20/40 = 1/2 or 0.5 as a decimal
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find the value of each variable in the circle to the right. the dot represents the center of the circle.
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We have been given an image of a circle. We are asked to find the value of each variable.

We can see that angle b corresponds to diameter of circle. We know that the measure of an angle that is inscribed to the diameter of a circle is 90 degrees . Therefore, the value of b will be 90.

we can see that angle is an inscribed angle of arc 99 degrees. We know that measure of an inscribed angle is half the measure of inscribed arc.

a=\frac{1}{2}\cdot 99

a=49.5

Therefore, the value of a is 49.5 units.

We know that measure of all angles of a triangle is 180 degrees. The measure of 3rd angle will be half the measure of c, so we can set an equation as:

a+b+\frac{1}{2}c=180

49.5+90+\frac{1}{2}c=180

139.5+\frac{1}{2}c=180

139.5-139.5+\frac{1}{2}c=180-139.5

\frac{1}{2}c=40.5

\frac{1}{2}c\cdot 2=40.5\cdot 2

c=81

Therefore, the value of c is 81.

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2 years ago
What kind of association is this, negative or positive?​
erik [133]

Answer:

negative association

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This diagram is a scatter plot which represents a set of data.  Data on a scatter plot can fit one of three descriptions:  positive (increasing), negative (decreasing) or no association (points do not form any kind of line).  Given this data and the line of best fit, or the line that pass through the majority of the points, it is a decreasing line.  Since the line goes downhill, it is a negative association.  

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Help please I have like 20 minutes to complete this
Nataliya [291]

Answer:     b

Step-by-step explanation:

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Step-by-step explanation:

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Does the set of ordered pairs {(5,13), (6,12), (7,11) (9,9) (10,11)} define a function?
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The answer is B: Yes because each input has only one output
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