The answer is 0.7. Since the formula of the z-score is the difference of the score (x) and the mean divided by the standard deviation (SD)...
z= [ (x-mean)/SD ]
You simply substitute the values given.
z = (11-9)/2.8
z=2/2.8
z=0.714
Then round it to the nearest tenth...
z- = 0.7
40
I assumed that you wanted to know how much little cubes are in the big cubes...so.....first you need to find out the volume of the small cube : 1/2 x 1/2 = 1/4....then divide it with 10, then results with 40! :D
Answer: C Because Radians Are Rotations 1 Radian is 360 Degrees
Step-by-step explanation:
Answer:
Step-by-step explanation:
we have
Applying distributive property
Remember the properties
so
Combine like terms
Answer:
100
Step-by-step explanation:
Ratio is a fraction, so ratio of boys to girls would be written as [let boys be "b" and girls be "g"]:
Also, there are 250 more girls than boys, so we can write:
g = 250 + b
Lets substitute this into "g" of the ratio we wrote and cross mulitply and solve for b:
The number of boys = 100