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e-lub [12.9K]
3 years ago
6

Dan took 12.5 seconds to run the 100 meter dash. he calculated the time to be approcimately

Mathematics
2 answers:
boyakko [2]3 years ago
7 0

Answer: 1) 0.2083 minute

Step-by-step explanation:

Given : Dan took 12.5 seconds to run the 100 meter dash.

We know that 1 minute = 60 seconds

⇒ 1 second = \dfrac{1}{60} minute

Then , the 12.5 seconds =\dfrac{12.5}{60}\text{ minute}

=0.208333333333\approx0.2083\text{ minute}

1 hour= 60  minute

⇒ 1 minute = \dfrac{1}{60} hour

Then, 0.2083\text{ minute}=\dfrac{0.2083}{60}\approx0.00347

hence, the correct answer is 0.2083 minute.

Sergio [31]3 years ago
3 0
I am sure its 1 hope i helped
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Which of the following describes the polynomial function?
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damaskus [11]

Answer:

The cost of 1 popcorn is $5.75

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Step-by-step explanation:

Hi there!

First, let´s write the system of equations:

2p + 3d = 18.25

4p + 2d = 27.50

Now, let´s take the first equation (for example, it can be any equation) and solve it for "p":

2p + 3d = 18.25

Subtract 3d to both sides of the equation:

2p = 18.25 - 3d

divide both sides of the equation by 2:

p = (18.25 - 3d)/2

Now let´s replace p = (18.25 - 3d)/2 in the second equation and solve it for d:

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4(18.25 - 3d)/2 + 2d = 27.50

2(18.25 - 3d) + 2d = 27.50

Apply distributive property:

36.5 - 6d + 2d = 27.50

subtract 36.5 to both sides of the equation:

-4d = 27.50 - 36.50

-4d = -9

divide both sides of the equation by -4:

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The cost of 1 drink is $2.25

To calculate the price of popcorn, let´s use the equation we obtained above isolating "p":

p = (18.25 - 3d)/2

p = (18.25 - 3(2.25))/2

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4 0
3 years ago
the variable z is directly proportional to x. when x is 6, z has the value 18. what is the value of z when x = 10 the variable z
nikklg [1K]
Z\alpha x
Z=kX
When x=6, z=18,
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Part B;
Z\alpha  \frac{1}{x}
z=\frac{a}{x}
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a=6
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Z=\frac{6}{13}
6 0
3 years ago
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guapka [62]

Answer: t-13 C

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