Answer:
25 years old
Step-by-step explanation:
karima is 20 years old
Sarah is 2 years older than karima (20+2= 22)
Noha is 3 years older than Sarah
if sara is 22 then noha is 22+3=25
Answer:
i think its 1.5 im not sure tho 1.5 sounds the best
Step-by-step explanation:
506,211+424,809=931,020 sum means add hope this helps
Answer:
The equation for this circle is 2c(x²+y²) - 8cx + cy = 0
Step-by-step explanation:
We can solve this problem replacing each of the points in the general equation and then solving the system of equations.
The fact that the circle passes by the point (3,-2) means that when x = 3, y = -2. So:


For (1, -2)


For (0,0)


Now we have to find a,b,c, from the following equations
13a+ 3b - 2c = 0
5a + b - 2c = 0
Since we have variables and 2 equations, i am going to write a and b as functions of c.
13a + 3b = 2c
5a + b = 2c
I will write b in the second equation as a function of a and c, and replace in the first equation
b = 2c - 5a
---------
13a + 3(2c-5a) = 2c
13a + 6cc -15a = 2c
-2a = -4c *(-1)
2a = 4c
a = 2c
-----------
b = 2c - 5a
b = 2c - 5(2c)
b = -8c
The solution for the system is (a,b,c) = (2c, -8c, c). So the equation for this circle is 2c(x²+y²) - 8cx + cy = 0