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3 years ago

Idk how to do this what’s the answers plz

Mathematics

2 answers:

Vika [28.1K]3 years ago

6 0

Walk is a 90 degree angle because of the angle marker

Bus is given

360-90 gives the total for bike,bus,car
=270-120= 150 (120 is from the given)

150 is what is left for bike and car
I say your best is to divide that by 2 but you don’t know the exact degree but those two seem pretty well even so 150/2= 75 aka 75 for both bike and car

Now that you know the degrees you have to find the percents. 360=1 circle

Walk=90/360=.25•100=25%

Bus=120/360=.33•100=33%

Bike=75/360=.208•100=21% (rounded)

Car is the same as bike=21%

Add up percents and it should add up to 100 to check.

Now back to the decimals. Sorry for the inconvenience.

Use .25•(total number of pupils)=9 pupils that walked.

Do that for each one and at the end all your answers for the boxes should add up to 36

jonny [76]3 years ago

5 0

Answer:

Walk= 9

Bus= 12

Car= 8

Bike= 7

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3 years ago

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3 years ago

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:

$k_{1} = \frac{y_{1}}{x_{1}}$

$k_{1} = \frac{45.5}{13}$

$k_{1} = \frac{7}{2}$

$k_{2} = \frac{y_2}{x_2}$

$k_{2} = \frac{49}{14}$

$k_{2} = \frac{7}{2}$

$k_{3} = \frac{y_{3}}{x_{3}}$

$k_{3} = \frac{52.5}{15}$

$k_{3} = \frac{7}{2}$

Since $k_{1} = k_{2} = k_{3}$ , the constant of proportionality is 3.5.

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