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3 years ago

The length of a swimming pool would be about

Mathematics

1 answer:

zubka84 [21]3 years ago

7 0

It would be 12 yards :)

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Circle O, with center (x, y) passes through the points A(0, 0), B(-3, 0), and C(1, 2). Find the coordinates of the center of the

KonstantinChe [14]

Answer:

The center of the circle is

$(-\frac{3}{2},2)$

Step-by-step explanation:

Let the equation of the circle be

$x^2+y^2+2ax+2by+c=0$ , where (-a,-b) is the center of this circle.

The points lying the circle must satisfy the equation of this circle.

A(0,0)

We substitute this point to get;

$0^2+0^2+2a(0)+2b(0)+c=0$

$\implies c=0$

B(-3,0)

$(-3)^2+0^2+2a(-3)+2b(0)+c=0$

$\implies 9+0-6a+0+c=0$

$\implies -6a+c=-9$

But c=0

$\implies -6a=-9$

$\implies a=\frac{3}{2}$

C(1,2)

$1^2+2^2+2a(1)+2b(2)+c=0$

$1+4+2a+4b+c=0$

$2a+4b+c=-5$

Put the value of 'a' and 'c' to find 'b'

$2(\frac{3}{2})+4b+0=-5$

$3+4b+0=-5$

$4b=-5-3$

$4b=-8$

b=-2

Hence the center of the circle is

$(-\frac{3}{2},2)$

8 0

3 years ago

Is the given pair a solution <br>y=-x -2; (2,-4)

nignag [31]

Yes
because
when x =2 then y = -(2) - 2 = -4

so (2,-4) is a solution

hope it helps

6 0

3 years ago

CAN SOME ACTUALLY HELP ME PLEASE!!!!!!!!!!!!!!!!!!

Ahat [919]

Answer:

(1, No, No) (2, No, Yes) (3, 6x^2+10) (4, 2x^2-3) (5, x^2-x) (6, -2x^4+12x+3)

(7, 3x^3+15x^2+20) (8, 9x^3 + 4x^2+8x) (9, xy+2x+6y+5) Sorry didn't have an answer for 10. I hope they are all correct sorry for the wait.

Step-by-step explanation:

6 0

3 years ago

Barry takes seven minutes to ride his bicycle 1 mile at this rate how long would bury take to ride his bicycle 4 miles

Igoryamba

Time taken to ride 1 mile=7 min.
So time taken to ride 4 mile=4×7=28min.

7 0

3 years ago

48% of what number is 24? im being timed.... will make brainliest

ycow [4]

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers