Answer:
C
Step-by-step explanation:
A can be from 2- 9 ( 8 digits)
B can be 0 to 9 (10 digits)
C can be 0 to 9 (10 digits)
Each of the X's can be 0 to 9 (10 digits)
To get the number of possibilities, we multiply them to get:
8 * 10 * 10 * 10 * 10 * 10 * 10 = 8,000,000
But now, 1 number (867-5309) is restricted, so the number of possibilities decrease by 1:
8,000,000 - 1= 7, 999, 999
Correct answer is C
This is a 1:3 ratio of girls to boys so we need to find one part by dividing 236 by 4 giving us 59 and then multiplying by the parts with boys which is 3 so 59*3=177 therefore there are 177boys in the class
Answer:
b. 2
Step-by-step explanation:
The standard error of the sample mean is the standard deviation of the sample divided by the square root of the size of the sample.
In this problem, we have that:
Sample standard deviation of 14, sample size of 49.
So
So the correct answer is:
b. 2
Answer:
y = 1/2x + 6
Step-by-step explanation:
y = 1/2x + b
5 = 1/2(-2) + b
5 = -1 + b
6 = b