1. To simplify -(x-4) change the sign on each term inside parenthesis:
-(x-4) would become -x+4
The answer is B.
2. -4xy / 3x
Cancwl the common factor out
-4xy / 3x (cross out the x's)
-4y /3
The answer is C.
Answer:
3972.72 specimens
Step-by-step explanation:
We solve using the z score formula:
z = (x-μ)/σ where
x is the raw score = 73 cm
μ is the population mean = 147 cm
σ is the population standard deviation = 30 cm
N is the number of samples = 4000
For x > 73
z = 73 - 147/30
z = -2.46667
Probability value from Z-Table:
P(x<73) = 0.0068189
P(x>73) = 1 - P(x<73) = 0.99318
The probability of having a height greater than 73cm is: 0.99318
The number of specimens that have a height greater than 73cm is calculated as: 0.99318 × 4000
= 3972.72 specimens
For this case we can make the following rule of three:
$ 10500 -------> 100%
$ 11300 -------> x
Clearing the value of x we have:
x = (11300/10500) * (100)
x = 107.6190476
The percentage of growth is:
107.6190476 - 100 = 7.6190476%
Round to the nearest tenth:
7.6%
Answer:
the percent increase in tution is:
7.6%
<span>Sofia Kovalevshaya. Hope this helps!</span>
It can be turned into 4•19/81 (mixed proper fractions) or in decimal 4.2346 (4dp)
