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Rina8888 [55]
3 years ago
7

A circle centered at (-2,3) and contains point (5,9) which represents the equation

Mathematics
1 answer:
SIZIF [17.4K]3 years ago
8 0
The standard form of the equation of a circle is (x-h)^2 + (y-k)^2 = r^2, where (h,k) is the center of the circle, (x,y) is a point of the circle, and r is the length of the radius of the circle. When the equation of a circle is written, h,k, and r are numbers, while x and y are still variables. (x-2)^2 + (y-k)^2 = 16 is an example of a circle. The problem gives us two of the three things that a circle has, a point (5,9) and the center (-2,3). We need to find the radius in order to write the equation. We substitute -2 for h, 3 for k, 5 for x, and 9 for y to get (5 - (-2))^2 + (9 - 3)^2 = r^2 We simplify: 49 + 36 = r^2, r^2 = 85. We only need to know r^2 because the equation of a circle has r^2. We now have all the information to write the equation of a circle. (x + 2)^2 + (y - 3)^2 = 85.
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Order does not matter in this problem.
Since order doesn't matter, it is a combination.
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Each slot needs to be multiplied by the next.

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3 years ago
Rate (R) = 25/3<br>Interest = Rs. 350<br>(d) Principal = Rs. 2400<br><br>Find the time (t) ​
julia-pushkina [17]

Answer:

The value of t is 1.75 years.

Step-by-step explanation:

Given that simple interest formula is I = (P×R×T)/100. So you have to substitute the following values into the formula :

i =  \frac{prt}{100}

let \: i = 350,p = 2400,r =  \frac{25}{3}

350 =  \frac{2400 \times  \frac{25}{3} \times t }{100}

350 =  \frac{20000t}{100}

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t = 35000 \div 20000

t = 35 \div 20

t = 1.75 \: years

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3 years ago
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2 years ago
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