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DochEvi [55]
2 years ago
15

Identify the center and radius of each equation. (x - 1)² + y² +81

Mathematics
1 answer:
olga_2 [115]2 years ago
8 0
The answer is 9 center is ( 1,0)
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Please answer this question I need a answer tonight
Schach [20]
Now Steve, you can tap these into your calculator one by one,
get all the quotients, and mark the ones that are 4.2, all in about
3 minutes.

There are three (3) of them in the list.

One of them is 'C'.          27.3  ÷  6.5  =  4.2

Now pick up your calculator and find the other two.  You can do it !
4 0
3 years ago
Read 2 more answers
Of the five quadratics listed below, four of them have two distinct roots. The fifth quadratic has a repeated root. Find the val
musickatia [10]

Answer: 3/5

Step-by-step explanation: The fourth quadratic in the list is the square of a binomial:

25x^2 - 30x + 9 = (5x - 3)^2

Therefore, the repeated root of this quadratic is the solution to 5x - 3=0, which is 3/5

6 0
3 years ago
There are 5000 undergraduates registered at a certain college. Of them, 448 are taking one course, are taking two courses, 675 a
olga55 [171]

Answer:

Step-by-step explanation:

Hello!

There are some values missing, so I'll find the probability distribution using others as example. Afterwards you can calculate the ones corresponding to this exercise following the same steps.

Considering there are 5000 undergraduates registered in the college.

465 are taking one course

658 are taking two courses

566 are taking three courses

1877 are taking four courses

1344 are taking five courses

90 are taking six courses

First you have to define the variable of interest. To identify it you have to ask yourself the following question: what is the characteristic of this population that is being measured?

The answer is "the number of courses an undergraduate is taking" and this will be the study variable X

X can take values from 1 to 6 courses.

To calculate the probability of each value of X, you have to divide the "number of students taking Xi courses" by "total number of students registered in the college"

For

X=1

P(1)= 465/5000= 0.093

X=2

P(2)= 658/5000= 0.1316

X=3

P(3)= 566/5000= 0.1132

X=4

P(4)= 1877/5000= 0.3754

X=5

P(5)= 1344/5000= 0.2688

X=6

P(6)= 90/5000= 0.018

For this to be a probability distribution the following condition should be met:

F(X)= ∑P(X) = 1

In this example: 0.093 + 0.1316 + 0.1132 + 0.3754 + 0.2688 + 0.018 = 1

I hope this helps!

7 0
3 years ago
The scale of a map says that 3cm represents 8km. What distance on the map (in centimeters) represents an actual distance of 2 ki
makvit [3.9K]
X/2=3/8x
x=(2)3/8
x=6/8
x=3/4
x=0.75cm
5 0
2 years ago
Satoko has 30 tokens to spend at an arcade. The three lines represent the cost of playing Satoko's three favorite
Delicious77 [7]

Answer:

?

Step-by-step explanation:

7 0
2 years ago
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