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2 years ago

Which of the following segments is a diameter of O?

Mathematics

2 answers:

mel-nik [20]2 years ago

4 0

Answer:

Step-by-step explanation:

A diameter is a chord of a circle that passes through the center of the circle.

A chord of a circle is a segment inside the circle whose endpoints are on the circle.

Chords of the circle:

ZY, ZX, YW, UV

Of all those chords, only two pass through the center of the circle:

ZX, YW

Of the two diameters, only one is a choice:

Answer: B. ZX

postnew [5]2 years ago

4 0

Answer:

Step-by-step explanation:

A pex

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What are four numbers that fall between 9.18 9.19

bearhunter [10]

For this question you would have to expand the numbers to the thounsandths
so it can be 9.181, 9.182, 9.183 and so on

5 0

1 year ago

Sally needs 300 stickers. Vince gives her 12 packs with 10 stickers in each pack. How many stickers dose sally need now? Draw a

Anton [14]

180 because you multiply the 12 packs by 10 to get 120. Then you subtract 120 from 300

6 0

1 year ago

Read 2 more answers

Compute the integral (a) int sin (pi x) dx by letting u = pi x. (b) int e^(x/2) dx by letting u = x/2. Show that you got the cor

Maslowich

Answer:

(a) $\int sin(\pi x) dx$ $=-\frac {cos \pi x}{\pi}+c$

(b) $\int e^\frac{x}{2} dx$ $=2e^\frac{x}{2}+c$

Step-by-step explanation:

(a)

$\int sin(\pi x) dx$

Let u = π x

differentiating with respect to x

du = π dx

$\Rightarrow dx=\frac{du}{\pi}$

Putting the value of x and dx

$=\int sin u \frac{du}{\pi}$

$=\frac{-cos u}{\pi}+c$ [ c is an arbitrary constant]

Now putting the value of u

$=-\frac {cos \pi x}{\pi}+c$

(b)

$\int e^\frac{x}{2} dx$

Let $u=\frac{x}{2}$

differentiating with respect to x

$du= \frac{1}{2} dx$

2du = dx

Putting the value of x and dx

= $\int e^u.2.du$

= $2e^u +c$

Now putting the value of u

$=2e^\frac{x}{2}+c$ [ c is an arbitrary constant]

3 0

2 years ago

A box of chocolates contains five milk chocolates, three dark chocolates, and four white chocolates. You randomly select and eat

PolarNik [594]

Answer:

60/220

Step-by-step explanation:

we use combination,

$(\frac{5}{1} ) \times ( \frac{4}{1} ) \times ( \frac{3}{1} )$

$5 \times 4 \times 3 = 60$

then, all divided by,

$(\frac{12}{3}) = 220$

$60 \div 220$

3 0

2 years ago

In an analysis of healthcare data, ages have been rounded to the nearest multiple of 5 years. The difference between the true ag

Mars2501 [29]

Answer:

The approximate probability that the mean of the rounded ages within 0.25 years of the mean of the true ages is P=0.766.

Step-by-step explanation:

We have a uniform distribution from which we are taking a sample of size n=48. We have to determine the sampling distribution and calculate the probability of getting a sample within 0.25 years of the mean of the true ages.

The mean of the uniform distribution is:

$\mu=\dfrac{Max+Min}{2}=\dfrac{2.5+(-2.5)}{2}=0$

The standard deviation of the uniform distribution is:

$\sigma=\dfrac{Max-Min}{\sqrt{12}}=\dfrac{2.5-(-2.5)}{\sqrt{12}}=\dfrac{5}{3.46}=1.44$

The sampling distribution can be approximated as a normal distribution with the following parameters:

$\mu_s=\mu=0\\\\\sigma_s=\dfrac{\sigma}{\sqrt{n}}=\dfrac{1.44}{\sqrt{48}}=\dfrac{1.44}{6.93}=0.21$

We can now calculate the probability that the sample mean falls within 0.25 from the mean of the true ages using the z-score:

$z=\dfrac{X-\mu}{\sigma}=\dfrac{0.25-0}{0.21}=\dfrac{0.25}{0.21}=1.19\\\\\\P(|X_s-\mu|$

7 0

1 year ago