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4 years ago

What is the radius of the circle given by the

Mathematics

1 answer:

max2010maxim [7]4 years ago

3 0

Answer:

C sqrt (4) or 2

Step-by-step explanation:

(x + 4)^2 + (y − 3)^2 = 4

We know that the equation for a circle can be written in the form

(x -h)^2 + (y − k)^2 = r^2 where (h,k) is the center and r is the radius

Rewriting the above equation

(x - -4)^2 + (y − 3)^2 = 2^2

The center is (-4,3) and the radius is 2

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Evaluate the expression when a=4, b=−5, and c=−8. (−b)+c=

hodyreva [135]

Answer:

-3

Step-by-step explanation:

(−b)+c=

Let b = -5 and c = -8

- (-5) + -8

5 -8

-3

7 0

3 years ago

Read 2 more answers

What is the least common multiple of 17, 20, and 12?

sukhopar [10]

the least common multiple is 1,020 :)

8 0

3 years ago

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Which of the following processes requires the production of gametes

True [87]

The answer would be B) Sexual Reproduction

4 0

3 years ago

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The cost of fencing a Square Garden is 400 at the rate of 1 per metre find its length

grin007 [14]

Here Is The Answer:

Perimeter of garden = 400 m

side of square = 400 / 4

= 100 m

Area of garden => 100 m x 100 m

=> 10000 m^2

Hope It Helps You!!!

Have A Nice Day!!! ^_^

8 0

3 years ago

According to Scarborough Research, more than 85% of working adults commute by car. Of all U.S. cities, Washington, D.C., and New

tamaranim1 [39]

Answer:

The 99% confidence interval for the mean commute time of all commuters in Washington D.C. area is (22.35, 33.59).

Step-by-step explanation:

The (1 - α) % confidence interval for population mean (μ) is:

$CI=\bar x\pm z_{\alpha /2}\frac{\sigma}{\sqrt{n}}$

Here the population standard deviation (σ) is not provided. So the confidence interval would be computed using the t-distribution.

The (1 - α) % confidence interval for population mean (μ) using the t-distribution is:

$CI=\bar x\pm t_{\alpha /2,(n-1)}\frac{s}{\sqrt{n}}$

Given:

$\bar x=27.97\\s=10.04\\n=25\\t_{\alpha /2, (n-1)}=t_{0.01/2, (25-1)}=t_{0.005, 24}=2.797$

*Use the t-table for the critical value.

Compute the 99% confidence interval as follows:

$CI=27.97\pm 2.797\times\frac{10.04}{\sqrt{25}}\\=27.97\pm5.616\\=(22.354, 33.586)\\\approx(22.35, 33.59)$

Thus, the 99% confidence interval for the mean commute time of all commuters in Washington D.C. area is (22.35, 33.59).

8 0

3 years ago