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Liula [17]
2 years ago
8

I’m super confused new topic not sure what to do for this one

Mathematics
1 answer:
geniusboy [140]2 years ago
8 0
There’s no question here.
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Given below is the odd-number function. Which of the following are equal to O(9)? Check all that apply.
Romashka [77]
The correct answers will be A. The ninth odd number. B.O(8) + 2 and D.17.

I did this too and those were the right answers!

I hope this helps! :>
3 0
3 years ago
What is the area of a circle whose equation is (x-3)² + (y + 1) ² =81?
kupik [55]
Okay, first, given the equation, we need to find out what the radius of the circle is. Let us state the general equation of a circle: 

\frac{(x-x_{1})^2}{r^2}+ \frac{(y-y_{1})_^2}{r^2}=1

Where (x_{1}, y_{1}) is the centre of the circle. In this case, we don't need to know the centre. Just the radius. 

Let us start by converting the equation into standard for, which I typed above. Divide both sides by 81. 

\frac{(x-3)^2}{81}+ \frac{(y+1)^2}{81}=1

Great! We now know the radius of the circle. It is \sqrt{81} because it is the bottom fraction. Now we know that the radius is 9. 

So now lets input this into the area of circle formula: 

A=πr^2 

Now we insert our radius. 

A=9^2π 

=A=81π 

You can convert that into a decimal if you wish. 

Hope this helped!

~Cam943, Moderator
4 0
3 years ago
Christine purchased a prepaid phone card for $20. Long distance calls cost 18 cents a minute using this card. Christine used her
Luda [366]

Answer:

4 minutes and 32 seconds

Step-by-step explanation:

card $20.00-money left over $15.68            $20.00-$15.68  4.32

6 0
3 years ago
What is the vertex of the quadratic function f(x) = (x - 8)(x - 2)
Anna11 [10]
Good day ~_~ /////////////

7 0
3 years ago
Read 2 more answers
Midpoint (10,4) Endpoint (9,-4), find the coordinates of the other endpoint.​
mestny [16]

Answer:

(11, 12)

Step-by-step explanation:

<u>Mid point coordinates:</u>

  • x = (x₁ + x₂)/2
  • y = (y₁ + y₂)/2

<u>Since midpoint and one endpoint given (10, 4) and (9, -4), the other endpoint:</u>

  • x₂ = 2x - x₁ = 2*10 - 9 = 11
  • y₂ = 2y - y₁ = 2*4 - (-4) = 12

<u>So the other endpoint is: </u>(11, 12)

4 0
3 years ago
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