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anyanavicka [17]
3 years ago
14

Which best represents the equation of this circle ?

Mathematics
1 answer:
likoan [24]3 years ago
3 0

The equation of a circle:

(x-h)^2+(y-k)^2=r^2

(h, k) - center

r - radius

Look at the picture:

center: (4, -2) → h = 4, k = -2

radius: r= 5

Substitute:

(x-4)^2+(y-(-2))^2=5^2\\\\(x-4)^2+(y+2)^2=25\to\boxed{B.}

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A random sample of 121 bottles of cologne showed an average content of 4 ounces. It is known that the standard deviation of the
Yuri [45]

Answer:

a. a parameter.

Step-by-step explanation:

A parameter is a property that describes the whole population, while a statistic is a property pertaining to a sample or sub-set of the population.

In this example, the average content of 4 ounces pertains to the 121 bottles sample and thus is a statistic. While the standard deviation of the population is mentioned to be 0.22 ounces, therefore 0.22 is a parameter.

8 0
3 years ago
A piece of ribbon is y cm long. Ashley cut it into 4 equal
cestrela7 [59]

Answer:

It is y/4

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The graph shows the cost (C) of shipping a package based on its mass in pounds (p)
EleoNora [17]

Answer:

C = 4p

Step-by-step explanation:

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5 0
2 years ago
1) Jo Anne needs to do a speech in her English class that can't be more than 4 minutes
djyliett [7]

Answer:

( 0 < y < 23 / 6 ) mins

Step-by-step explanation:

Solution:-

We will define a variable ( x ) as the time it took for Jo Anne to give her speech at home.

The time taken to give her speech must always be less than 4 minutes. We can express this mathematically using an inequality as follows:

                              ( 0 < x < 4 ) minutes

Jo Anne gave her speech which was 10 seconds less than the one she practised at home. We will convert the time in seconds to minutes as follows:

                             10 s * \frac{min}{60 s}  = \frac{1}{6} min

The time taken by Jo Anne to complete her speech in English class can be represented as:

                             y = x - 1/6

Using the range of time that Jo Anne could take in delivering her speech in the class would be:

                                    0 < x < 4

                            0 - 1/6 < y < 4 - 1/6

                            -1/6 < y < 23 / 6

Since time can not be less than zero. We correct the lower limit to " 0 " as follows:

                              ( 0 < y < 23 / 6 ) mins

   

7 0
4 years ago
Please help me worth a lot of points! Worth 50 points ! Use your own answer and explain it to me thank you !
Vilka [71]
The equation of the best fit line is
y = 0.1073x + 4.5365

where
x is the number of leg press reps
y is the time it takes to do a 40 yard dash

For 22 leg press reps"
y = 0.1073(22) + 4.5365
y = 6.8963 s
5 0
4 years ago
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