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zimovet [89]
2 years ago
7

Please explain how it’s C?!

Mathematics
1 answer:
Zepler [3.9K]2 years ago
8 0
The equation of a circle centered at the origin is x² + y² = r², where r is the radius.

Because we know that the circle goes through point (0, -9), we know that the radius of the circle is 9, so the equation of the circle is x² + y² = 9² = x² + y² = 81.

Therefore, to see if the point (8, √17) lies on the circle, we need to substitute these coordinates into the equation:

x² + y² = 81
8² + (√17)² = 81
64 + 17 = 81
81 = 81

So this confirms that the point (8, √17) lies on the circle.

I hope this helps!
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Robert is a high school basketball player. In a particular game, he made some three point shots and some free throws (worth one
Oksanka [162]

Answer:

let t = number of three-point shots

let f = number of free throw shots

Step-by-step explanation:

t + f = 9      (he made a total of 9 shots altogether)

3t + 1f = 23   (number of shots multiplied by their point value)

substitution method:   t = 9 - f

                                    3(9 - f) + f = 23

                                     27 - 3f + f = 23

                                      -2f = -4

                                         f = 2

find 't':                               t + 2 = 9

                                         t = 7

                                         

8 0
3 years ago
#40 please! Thank you.
lisov135 [29]
Well he and the cart together weigh: 210+95=305.
The weight left for boxes is: 4,000-305=3,695.
Total weight of boxes is: 50·275=13,750.
Divide the weight of boxes by how much is left for the elevator: 13,750/3,695=3.72
Since 3.72 is more than 3 he would have to make 4 trips to safely do so :)
5 0
3 years ago
HELP PLZS FAST BRAINIEST
kirill115 [55]

Answer:

x=-2, y=-2. (-2, -2).

Step-by-step explanation:

2x-5y=6

-2x+10y=-16

-------------------

5y=-10

y=-10/5=-2

2x-5(-2)=6

2x+10=6

2x=6-10

2x=-4

x=-4/2=-2

3 0
2 years ago
Read 2 more answers
the temperature outside changed from 85 degrees Fahrenheit to 49 degrees fahrenheit over a period of six days
Mice21 [21]

Answer:

whats the ?

Step-by-step explanation:

4 0
3 years ago
4. Give the sum of the prime factors of 10.
andreyandreev [35.5K]
4+6 and 2+8 I’m not sure it is
3 0
2 years ago
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