Answer:
x = -2
Step-by-step explanation:
2x = -8+4
2x = -4
x = -2
CHECK
-4 - 4 = -8
Answer:equal
Step-by-step explanation:
Self stepp
Answer:
I believe that it is b
Step-by-step explanation:
But correct me if i am wrong! Have a nice day!
A. we use the z statistic to solve this problem
z = (x – u) / s
We calculate the value of the sample mean u and standard deviation
s:
u = $30 * 304 = $9120
s = $21 * 304 = $6384
z = (9,600 – 9120) / 6384
z = 0.075
From the normal tables using right tailed test,
P = 0.47
B. At worst 11% means P = 0.11, so the z value at this is
z = -1.23
-1.23 = (x – 9120) / 6384
x = 1267.68
1:2
Similar to the 1/2 fraction, 1:2 is a simplified ratio of a half.
