Answer:
15 bicycles and 6 skateboards.
Step-by-step explanation:
x+y = 21, since there are 21 total items in the shop
Answer:
n = √2/32
Step-by-step explanation:
1/8 : √2 = 2n
1/8×1/√2 = 2n
1/8√2 = 2n
√2/16 = 2n
√2 = 16×2n
32n = √2
n = √2/32
Answer:
21 is the answer my guy
Step-by-step explanation:
7 times 3 is 21
Answer:
a.2,400-1700=
b. 700: the hot air balloon decreased height by 700 feet
Answer:
The probability that <em>X</em> is less than 42 is 0.1271.
Step-by-step explanation:
The random variable <em>X </em>follows a Normal distribution.
The mean and standard deviation are:
E (X) = <em>μ</em> = 50.
SD (X) = <em>σ</em> = 7.
A normal distribution is continuous probability distribution.
The Normal probability distribution with mean µ and standard deviation σ is given by,

To compute the probability of a Normal random variable we first standardize the raw score.
The raw scores are standardized using the formula:

These standardized scores are known as <em>z</em>-scores and they follow normal distribution with mean 0 and standard deviation 1.
Compute the probability of (X < 42) as follows:

*Use a <em>z</em>-table for the probability.
Thus, the probability that <em>X</em> is less than 42 is 0.1271.
The normal curve is shown below.