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patriot [66]
3 years ago
5

What is the radius of a circle whose equation is x2 + y2 + 8x - 6y + 21 = 0? units

Mathematics
1 answer:
pickupchik [31]3 years ago
6 0

Answer:r=2

Step-by-step explanation:

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9x - 4y? +72x–24y— 36–0
earnstyle [38]
Not is posible because no exist a igualty
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4 years ago
The height, h, of a falling object t seconds after it is dropped from a platform 300 feet above the ground is modeled by the fun
Bogdan [553]

Answer:

Average rate of fall = \frac{h(3)-h(0)}{3}

Step-by-step explanation:

Since they give you an expression for the position of the object as a function of time, one can derive the average velocity of the object during the first 3 seconds of the fall by estimating the position of the object at time 0, the position of the object at time 3 seconds, finding the displacement of the object (distance covered) in that interval of time (via a subtraction of these two quantities), and finally dividing this change by the elapsed time (3 seconds) thus using the concept that velocity is the quotient between distance covered over the elapsed time:

Average rate of fall = (h(3) - h(0))/ 3

Average rate of fall = \frac{h(3)-h(0)}{3}

4 0
3 years ago
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Katie need to buy 1kg of oranges. If each orange weighs 100g, how many total oranges does she needs to buy.
lana [24]
1kg is 1000 grams. If each orange is 100g, 10 oranges is 1000g or 1kg. The answer is B or 10 oranges.
7 0
3 years ago
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Steven has a rectangular rug with a perimater of 16 feet the width of the rug is 5 feet what is the lenght if the rug
ziro4ka [17]
If the width is 5 feet you have to do 16 - 5 which equals 11 meaning 11 is your answer (the Length)

hope this helps
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5 0
3 years ago
3/9=21/k what is the strategy for solving it
Vinvika [58]

Answer: k = 63

Step-by-step explanation: You need to multiply the left side by its reciprocal to move the numbers to the right. You also need to multiply by k on the right side to get it alone on the left. This will result in

(9/3)(3/9) = (21/k)(9/3) simplified

1 = 189/3k • k    then multiply by k

k = 189/3 simplify

k = 63

5 0
3 years ago
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