Answer:2b+9
Step-by-step explanation:
Answer:
1/50
Step-by-step explanation:
A scale model of an object is 5 inches tall. The actual object is 250 feet tall.
The scale factor of the model = 5/250 = 1/50
31,800/12=2650
hope this helps!
Since it's a sample size, we use x, as the mean and s= standard deviation
_
Given: x =27, s = 2 and total sample = 32.
Probability that a recruit is at least 31 years old?
Let's calculate the Z score :
_
X - x 31 - 27
Z = ----------- → Z = -------- → Z = 2 (now look up in the Z score table,
s 2
Area (Z=2) =0.9772 , but Z ≥ 2 (at least) , then :
Area (Z≥2) = Area (Z≤ - 2) = 0.0228
P(≥31)= 0.0228
Answer:
23s-7 (please let me know if this is right or wrong)