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3 years ago

The following is a denegerate circle

Mathematics

1 answer:

horrorfan [7]3 years ago

8 0

x+y=2 x^2+y^2=-1 x^2+y<span>^2=1 (x-4)^2+(y-2)^2=0 </span>

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Solve for a:<br>9+2a = -3-4a

lubasha [3.4K]

Answer:

a=-2

Step-by-step explanation:

Let me know if you need the steps tho.

5 0

3 years ago

If h(x) = −3x − 10, find h(−3). (1 point)

Ipatiy [6.2K]

Answer:

h(- 3) = - 1

Step-by-step explanation:

Substitute x = - 3 into h(x) , that is

h(- 3) = - 3(- 3) - 10 = 9 - 10 = - 1

8 0

3 years ago

Suppose that the weights of passengers on a flight to Greenland on Frigid Aire Lines are normal with mean 175 pounds and standar

Natali5045456 [20]

Answer:

The minimum weight for a passenger who outweighs at least 90% of the other passengers is 203.16 pounds

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 175, \sigma = 22$

What is the minimum weight for a passenger who outweighs at least 90% of the other passengers?

90th percentile

The 90th percentile is X when Z has a pvalue of 0.9. So it is X when Z = 1.28. So

$Z = \frac{X - \mu}{\sigma}$

$1.28 = \frac{X - 175}{22}$

$X - 175 = 22*1.28$

$X = 203.16$

The minimum weight for a passenger who outweighs at least 90% of the other passengers is 203.16 pounds

6 0

3 years ago

A certain number was divided by 3 and 3 was added to the result. The final answer was 8 what was the number

nevsk [136]

Answer:

Step-by-step explanation:

x/3 + 3 = 8

x/3 + 9/3 = 8

x + 9 = 24

x = 15

5 0

3 years ago

A cell phone company is looking to place a new tower to service 3 cities. In order for it to best service each city, it needs to

AlladinOne [14]

A circle is a collection of points all of which are on the circumference of the circle. If you use algebra and (x-h)^2 + (y-k)^2 = r^2 and the info contained in the coordinates (x,y) of each city, you can find h, k and r. Then r is the (equal) distance between each city and the center of the circle, where the new tower will be built.

3 0

3 years ago