Answer:
2x^2y+9y^2-7x^2
Step-by-step explanation:
Just combine like terms.
Answer:
There is 16.2% probability that a randomly selected individual will be between 185 and 190 pounds
Step-by-step explanation:
Z score
The z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by:
z = (x - μ) / σ
where μ is the mean, x = raw score and σ is the standard deviation.
Given μ = 180, σ = 8.
For x = 185:
z = (185 - 180)/8 = 0.625
For x = 190:
z = (190 - 180)/8 = 1.25
P(185 < x < 190) = P(0.625 < z < 1.25) = P(z < 1.25) - P(z < 0.625) = 0.8944 - 0.7324 = 16.2%
There is 16.2% probability that a randomly selected individual will be between 185 and 190 pounds
Answer:
my answer came out to x = 6 + 1.5y
Step-by-step explanation:
Answer:
2x + 10
Step-by-step explanation:
the sum of two times a number means # times 2, and the number is unknown so you use x, and ten means +10 so that means that, THe sum of two times number and ten is
2x+10
Answer:
These two lines are parallel and system of these equations have no solution
Step-by-step explanation:
Parallel Lines: Lines having same slope and different x and y intercept are parallel lines. System of such equations does not have any solution as these lines does not intersect at any finite points.
Standard form of line is 
where 
is slope and 
is y-intercept.
First Line:
Second Line:
Hence these two lines are parallel and system of these equations have no solution
