I NEED HELP IMMEDIATELY. MY ASSIGNMENT IS DUE IN AN HOUR

Mathematics

1 answer:

EastWind [94]3 years ago

3 0

Answer: the first one would be 31.65

Step-by-step explanation:

First you have to do the a2+b2 thing to get the adjacent number then you do cos^-1(6.98/8.2) and you’ll get 31.655

For the third one x will equal 44.41

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Answer:

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Step-by-step explanation:

You first have to find the midpoints of AC and AB.

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Substitute the x points of AC in

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Substitute the y points of AC in

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You do the same thing with the AB line. I am pretty sure this works and I hope this helps!

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Does the table show a direct proportional relationship? If so, what is the constant of proportionality?

lesantik [10]

Answer:

C. Yes, 3.5.

Step-by-step explanation:

If there is a relationship of direct proportionality for every ordered pair of the table, then the constant of proportionality must the same for every ordered pair. The constant of proportionality ( $k$ ) is described by the following expression:

$k = \frac{y}{x}$ (1)

Where:

$x$ - Input.

$y$ - Output.

If we know that $(x_{1}, y_{1}) = (13, 45.5)$ , $(x_{2}, y_{2}) = (14, 49)$ and $(x_{3}, y_{3}) = (15, 52.5)$ , then the constants of proportionalities of each ordered pair are, respectively: