Answer:
3)
-3.6; since - times + is -ve
4)
360 ; since - * - *- * - is +ve
5)
24 ; since - * - is +ve
Answer:
i think B
hope this helps
Step-by-step explanation:
The equation of a circle is:
(x-h)^2+(y-k)^2=r^2, where (h,k) is the center and r is the radius
So the first thing we can do is to find the center of the circle, which will be at the midpoint of the two endpoints of the diameter. The midpoint is simply the average of the coordinates of the endpoints.
mp=((-1+3)/2, (-4+2)/2)
mp=(1, -1), and this midpoint is the center of the circle our (h,k) for the circle equation.
Now we must find the length of the diameter so that we can know what our radius is. The distance between any two points is:
d^2=(x2-x1)^2+(y2-y1)^2 so
d^2=(-1-3)^2+(-4-2)^2
d^2=4^2+6^2
d^2=16+36
d^2=52
Note that this distance squared is our diameter squared.
Since d=2r
d^2=4r^2
r^2=d^2/4, we showed that d^2=52 so
r^2=52/4
r^2=13 (r=√13, but we need r^2 for our equation anyway)
So now we can fill out our circle equation because we know the center is at (1,-1) are r^2=13
(x-1)^2+(y+1)^2=13
Answer:
There will be 3472 cats in 10 years
Step-by-step explanation:
There were 3500 cats
The number of dogs in a city is declining at a rate of about 0.08% each year.
We are supposed to find the no. of cats in 10 years
Formula :
Where N(t) = Remaining cats after t days
= Initial population
r = rate of depreciation
t=time
So, No. of cats remained after 10 years = 
Hence There will be 3472 cats in 10 years
