I need help finding the radius to this question:Circle o is represented by the equation (x+2)^2 + (y-5)^2=48.The coordinates of the center and the length of the radius of circle O are....

Answers

Answer 1

Answer:
I'm sorry I can't think of a way to explain this right now. Maybe my brain
is just fried from a long day, I don't know. I really hate it when people get
on here and hand out answers with no explanation, but that's the best that
I can do right now.

I can tell you that the center of the circle is the point (-2, 5),
and the length of the radius is √48 = 4√3 = about 6.928 .

Answer 2

Answer: To find the center you would set (x+2) and (y-5) equal to 0. Solving for x and y, you get that x=-2 and y=5. Center: (-2,5). You can also think of this as solving for the additive inverse of 2 and -5. To find the radius, simply take the square root of 48, leaving you with 4√3.
Remember the from is (x-h)²+(y-k)²=R² To find R just take the square root of the constant.

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[Related Rates]Each side of a square is increasing at a rate of 6 cm/s. At what rate is the area of the square increasing when the area of the square is 16 cm^2? ...?

Answers

Below is the solution:

A(final)=16cm^2 ds/dT=6 da/dT=?

A=(s)^2 A=16cm^2 , s=sqrt(A) , s=sqrt(16) , s=4cm

da/dT=2(s)(6cm/sec) , da/dT=12cm/sec(s) , da/dT=12cm/sec (4cm)

Answer should be da/dT=48cm^2/sec

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Find inverse of f(x)=3x+1

Answers

$f(x)=3x+1\to y=3x+1\n\n3x+1=y\ \ \ \ \ |-1\ both\ sides\n\n3x=y-1\ \ \ \ \ |:3\ both\ sides\n\nx=(1)/(3)y-(1)/(3)\n\nAnswer:f(x)=(1)/(3)x-(1)/(3)$

f:R->R, f(x) = 3x+1;Let be g the inverse of f;3x+1 = y => 3x = y-1 => x = (y-1)/3;g:R->R, g(y) = (y-1)/3;

Help plzzz ill give extra points ‼️‼️

Answers

C is the answer I believe

Explain why the equation 2(3x - 5) = 6x + 8 has no solutions.

Answers

Answer:

Look at step-by-step solution

Step-by-step explanation:

2(3x-5)=6x+8

First start by dividing two from the left side:

3x-5=3x+4

From there add five and subtracted 3x from both sides:

0=9

Since zero does not equal nine, there is no solution.

Answer:

- 5 does not equal 8

Step-by-step explanation:

Distribute the 2 to get 6x - 5 = 6x +8

6x - 5 = 6x + 8

subtract 6x on both sides you are left with -5 = 8 which is not a true statment.

Since the equation leads to a statment that isn't true, there is no solution.

A scientist suggests keeping indoor air relatively clean as follows: provide 2 or 3 pots of flowers for every 100 square feet of floor space under a ceiling of 8 ft. If your classroom has an 8 ft ceiling and measures 35 ft by 40 ft, how many pots should it have?

Answers

First we calculate classroom surface:
35*40=1400 square ft
we know that for every 100 square ft 2 or 3 pots can be put
so 1400/100=14
14*2=28
14*3=42
we need 28 or 42 pots

Of the 8 students in the chess club, three will represent the club at an upcoming competition. How many different 3-person teams can be formed from the 8 students?

Answers

I think that this is a combination problem. From the given, the 8 students are taken 3 at a time. This can be solved through using the formula of combination which is C(n,r) = n!/(n-r)!r!. In this case, n is 8 while r is 3. Hence, upon substitution of the values, we have

C(8,3) = 8!/(8-3)!3!
C(8,3) = 56

There are 56 3-person teams that can be formed from the 8 students.

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