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PtichkaEL [24]
3 years ago
13

A circle has the equation x2 + (y−7)2 = 121. What is the length of the diameter of the circle?

Mathematics
1 answer:
Reika [66]3 years ago
8 0

Answer:

22

Step-by-step explanation:

The standard form for an equation of a circle is (x-h)^2+(y-k)^2=r^2, where h is the x coordinate of the center of the circle, k is the y coordinate, and r is the radius of the circle. Therefore, the radius of this circle squared is 121, meaning that the radius of the circle is 11. Since the diameter of a circle is twice the radius, the radius of this circle is 22. Hope this helps!

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DJ Davon is making a playlist for work; he is trying to decide what 12 songs to play and in what order they should be played. If
Marta_Voda [28]

Answer:

3.63 * 10^19

Step-by-step explanation:

Given that :

Number of choices to select = 12

Category available :

Blues - 14

Country - 25

Disco - 21

To select an equal number of song for each category ; then 4 songs will be selected from each :

Using combination :

(14C4 * 25C4 * 21C4)

Since the order matters for the 12 selected songs ; it thus requires 12 permutation

Thus ;

(14C4 * 25C4 * 21C4) * 12!

nCr = n! / (n-r)!r!

Using calculator;

14C4 = 1001 ;

25C4 = 12650

21C4 = 5985

12! = 479001600

Hence,

(1001 * 12650 * 5985) * 479001600

= 36301596217286400000

=3.63 * 10^19

5 0
2 years ago
What is the value of x in 5x−3(x−11)=7(2x−5)+2
riadik2000 [5.3K]
The value of x is 5.5. I got this answer by first distributing -3 amongst (x-11), and distributing 7 amongst (2x-5). Next I combined like terms and subtracted 3x from 5x, and added -35 and 2. Next I subtracted 33 from both sides. Next I subtracted 14x from both sides. And finally I divided both sides by -12 to get the final answer of 5.5.
4 0
3 years ago
1 1/2= v + 3/4 (that's 1 and a half, not 11 over 2)<br> what is v?
Irina-Kira [14]

Answer:

The value of v is 3/4.

Step-by-step explanation:

First, you have to convert mixed number into improper fraction :

1 \frac{1}{2} \\  =  \frac{2 \times 1 + 1}{2}  \\  =  \frac{3}{2}

In order to find the value of v, you have to substract 3/4 to both sides :

\frac{3}{2}  = v +  \frac{3}{4}

\frac{3}{2}  -  \frac{3}{4}  = v +  \frac{3}{4}  -  \frac{3}{4}

v =  \frac{3 \times 2}{2 \times 2}  -  \frac{3}{4}

v =  \frac{6}{4}  -  \frac{3}{4}

v =  \frac{3}{4}

8 0
3 years ago
Read 2 more answers
Helpppppppp asap 89points
Lynna [10]

Answer:

the answer for the first is the second one

and the answer for the second is 9>6

Step-by-step explanation:

9 is greater than (>) six

and when plotted you can see that 9 is to the right of -6

hope i helped!

7 0
2 years ago
Read 2 more answers
Can I get some help im stuck???
svetoff [14.1K]
Connor
Initial Value=200ft
Rate of Change=10ft/min

Pilar
Initial Value=242ft
Rate of Change=8ft/min
6 0
3 years ago
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