Answer:
68% of exam scores lie within one std. dev. of the mean
Step-by-step explanation:
Because the standard deviation is 100, one standard deviation above the mean comes out to 600. Likewise, one std. dev. below the mean comes out to 400. By the Empirical Rule, 68% of exam scores lie within one std. dev. of the mean.
Center at (h,k) and radius r is
(x-h)²+(y-k)²=r²
so given
center at (9,-8)
(x-9)²+(y-(-8))²=r²
(x-9)²+(y+8)²=r²
input the point (19,22) to find r²
x=19 and y=22
(19-9)²+(22+8)²=r²
10²+30²=r²
100+900=r²
1000=r²
10√10=r
well, the equation is
(x-9)²+(y+8)²=1000
Answer:
1. $539
2. $300
3. C
Step-by-step explanation:
May I have brainliest?
Answer:
7.5 short tons
Step-by-step explanation:
16 3/10 - 8 4/5 = 7.5
If it is a square all sides are equal, so the perimeter is equal to 4 times the length of one side...
4s=32
s=8in
+ 11x + 30)