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vivado [14]
3 years ago
12

What is the equation of a circle whose center is (2,0) and has a radius= 9?

Mathematics
2 answers:
Flauer [41]3 years ago
6 0
The equation of a circle is: (x - h)² + (y - k)² = radius² where (h, k) is the center. Now just plug in your given information and simplify.

(x - 2)² + (y - 0)² = 9²

Your equation is:
(x - 2)² + y² = 81
HACTEHA [7]3 years ago
6 0
(x-2)²+(y-0)²=9²
you need simplify it.
center(a,b) radius=R
(x-a)²+(y-b)²=R²
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3 years ago
If fixed cost of 20 article is 500 and variable cost for each article is 40. Find the total cost function? Also ,find the total
Deffense [45]

Answer:

Cost function = 40a + 500

Cost of 90 articles = $4,100

Step-by-step explanation:

The fixed cost is $500 and it will.not change regardless of production level.

The Variable cost is $40 and increases by every additional unit produced.

Assume the number of articles produced is a.

Cost function would be:

Total cost = Variable cost * Number of articles + Fixed cost

TC = 40a + 500

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6 0
3 years ago
(7^2)^4= n^8 solve for n
S_A_V [24]

Answer:

n=7

Step-by-step explanation:

(7^2)^4= n^8

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4 0
3 years ago
Two sides of a triangle have lengths 18 cm and 40 cm. Describe the possible lengths of the third side.
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6 0
3 years ago
Read 2 more answers
If the value of y varies directly with x and y= -1 when x=3, find y if x=9
Zolol [24]

y = - 3

Since y varies directly as x then

y = kx ← ( k is the constant of variation )

to find k use y = - 1 when x = 3

k = \frac{y}{x} = \frac{-1}{3} = - \frac{1}{3}

hence y = - \frac{1}{3} x

when x = 9, then

y = - \frac{1}{3} × 9 = - 3


4 0
3 years ago
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