# Question : Find if the coordinates given lie on the circles below: (a) Does (4,2) lie on the circle with equation(x – 1)^2 + (y

Question : Find if the coordinates given lie on the circles below: (a) Does (4,2) lie on the circle with equation (x - 1)^2 + (y + 2)^2 = 25.
EXPLAIN STEP BY STEP

## This Post Has 3 Comments

1. dudedude1593 says:

point lies on circle

Step-by-step explanation:

Substitute the coordinates of the point into the left side of the equation and if equal to the right side then point lies on circle.

(4 - 1)² + (2 + 2)² = 3² + 4² = 9 + 16 = 25 = right side

Then point (4, 2 ) lies on the circle

2. Expert says:

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock

3. Expert says:

The great thing about this problem is they give you everything you need to solve it easily. so the expression is: 12h+30w12h+30wand so everywhere you have an “h” you place 66. and everywhere you have a “w” you place 33. then the expression will look like this: 12(66)+30(33)12(66)+30(33)from here you multiply and then add. getting the following of: \$785,862hope this