Answer:
8/21
Step-by-step explanation:
Answer:
121
Step-by-step explanation:
Let u be 1 unit.
5u+11u=176
16u=176
u=176÷16
=11
11u=11×11
=121
Answer:
14
Step-by-step explanation:
Put 4 where x is in the function and do the arithmetic.
f(4) = 2(4) +6 = 8+6 = 14
14 cars will drive by in 4 minutes.
Answer:
(a) P(X<51) = 50.0%
(b) P(X<45) = 15.1%
(c) P(X>45) = 84.9%
Step-by-step explanation:
Mean weight (μ) = 51 pounds
Standard deviation (σ) = 5.8 pounds
The z-score for any given weight, 'X', is given by the following expression;
![z=\frac{X- \mu}{\sigma}](https://tex.z-dn.net/?f=z%3D%5Cfrac%7BX-%20%5Cmu%7D%7B%5Csigma%7D)
a) P(X<51)
Since 51 pounds is exactly the mean weight, 50% of the dogs weight more than 51 pounds while 50% weight less than 51 pounds.
P(X<51) = 50.0%
b) P(X<45)
The z-score for X=45 is:
![z=\frac{45- 51}{5.8}\\z=-1.034](https://tex.z-dn.net/?f=z%3D%5Cfrac%7B45-%2051%7D%7B5.8%7D%5C%5Cz%3D-1.034)
A z-score of -1.034 is equivalent to the 15.06-th percentile in a normal distribution. Therefore:
P(X<45) = 15.1%
c) P(X>45)
P(X>45) = 100% - P(X<45) = 100% - 15.1%
P(X>45) = 84.9%
Answer:
Yo Send me a pic so i can solve
Step-by-step explanation: