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qaws [65]
3 years ago
13

HELP HELP HELP HELP HELP HELP HELP HELP HELP

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
4 0
Yo get up bdbdndndbbd
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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:

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.

8 0
3 years ago
What is the exact area of a circle with a diameter of 18 feet
marin [14]
A = π r^2
A = 9^2 <span>π
</span>A = 81<span>π 

if using </span>π = 3.14 then

A = 3.14 x 81 = 254.47 ft^2

answer: 81π ft^2 or 254.47 ft^2

hope that helps
6 0
3 years ago
-3 (2m+5)+8=5 (-2m+1)
Zanzabum
I just worked out the problem twice and got -4.5 both times.
3 0
3 years ago
Read 2 more answers
What is the value of x? 6x - 2x = 16
agasfer [191]

6x - 2x = 16

4x = 16    |divide both sides by 4

<h3>x = 4</h3>
5 0
3 years ago
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A pastry chef can create 18 muffins in 2 hours. What is the unit rate per minute at which this pastry chef can create muffins?
Alja [10]
18 muffins in 2 hours
We want minutes
Tell me how many minutes in 2 hours
3 0
2 years ago
Read 2 more answers
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