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Amanda [17]
3 years ago
11

The equation of a circle is (X+12)^2+(y+16)^2=r^2, and the circle passes through the origin. The equation of the circle then cha

nges to ( x-30)^2+(y-16)^2=(r2)^2 and the circle still passes through the origin. What are the values of r1 and r2? Answers: r1 = 10 and r2 = 17 r1 = 10 and r2 = 34 r1 = 20 and r2 = 17 r1 = 20 and r2 = 34
Mathematics
1 answer:
serious [3.7K]3 years ago
3 0

Answer:

x=\sqrt{r_{2} +y-16(r2-y+16)+30}R2

r=\sqrt{x^2+24x+y2+32y+400}

Step-by-step explanation:

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PLEASE HELP ASAP!! PLEASE ANSWER A AND B! GIVING AWAY 13 POINTS
telo118 [61]
According to google A. Would be 2.375 or as a fraction it would be 2 3/8
5 0
3 years ago
(5/4 × 54/48) + (5/4 × 105/75)​
Kitty [74]

101/32 or 3 5/32 or 3.15625

(5/4 × 54/48) = 45/32

(5/4 × 105/75) = 7/4

7/4 x 8 top & bottom =56/32

45+56=101

Hope this helps!

8 0
2 years ago
If x2 + y2 = 14 and xy = 5, find the value of (1/2 x + 1/2 y)2.
aleksley [76]

Answer:

(½x+½y)²=6

Step-by-step explanation:

x^2 + y^2 = 14, xy=5

(A+B)^2=A^2 +2AB+B^2... (*)

(1/2x+1/2y)^2 =(*)

(1/2x)^2 +2(1/2x)(1/2y)+(1/2y)^2 =

1/4x^2 +1/2xy+1/4y^2=

1/4(x^2 +y^2) +1/2(xy)=

1/4*14+1/2*5=

14/4+5/2=

14/4+10/4=

24/4=6

let me know if I'm wrong.

5 0
3 years ago
Read 2 more answers
Estimates the sum of 1/2-1/3
VladimirAG [237]
<span>decimal: 0.166666667

fraction: 1/6


this is if you were asking the difference which is subtraction, you asked for the sum and the difference
</span>
8 0
3 years ago
Need help on thissss
erma4kov [3.2K]

Answer:

i think the answer might be b if not i'm sorry

Step-by-step explanation:

5 0
2 years ago
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