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Alenkinab [10]
2 years ago
9

Which is the standard equation for a circle centered at the origin with radius r?

Mathematics
2 answers:
xeze [42]2 years ago
3 0

Answer:The equation of a circle of radius r and centre the origin is x2 + y2 = r2

Step-by-step explanation:

Ostrovityanka [42]2 years ago
3 0

Answer:option D is correct

Step-by-step explanation:

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Use the distributive property to expand Negative 4 (Negative two-fifths + 3 x). Which is an equivalent expression?
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Answer:

the answer is the last one

Step-by-step explanation:

so the answer is d

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X+12/2x-5 - 3x-2/2x-5
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the answer to this question is 3x-10

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Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.47 and a standard deviation of 1.5. U
alex41 [277]

Answer:

2.5% of American women have shoe sizes that are greater than 11.47.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 8.47

Standard deviation = 1.5

The normal distribution is symmetric, which means that half the measures are below the mean, and half are above the mean.

What percentage of American women have shoe sizes that are greater than 11.47?

11.47 = 8.47 + 2*1.5

This means that 11.47 is two standard deviations above the mean.

Of those measures below the mean, none are greater than 11.47.

Of those measures above the mean, 95% are between the mean and 11.47, and 5% are above. So

0.5*0.05 = 0.025

2.5% of American women have shoe sizes that are greater than 11.47.

8 0
3 years ago
the length of a rectngle is 8/3 times as great as its widthwhat is the width if the length of a rectangle is 24 ft.
laila [671]
L=(8/3)W = 24 ft.  Solving for W, we mult. both sides of this eqn by (3/8), obtaining

W = (3/8)(24 ft) = 9 ft (answer)
4 0
3 years ago
Rewrite the following equations in the form y=mx + b and identify the values of m and b
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You need to put the equations?
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2 years ago
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