Answer:
-4
Step-by-step explanation:
Given the expression 2(-2x-4)+6=5-3(x+1), we are to find the value of x that will make the expression true:
2(-2x-4)+6=5-3(x+1)
Open the parenthesis
2(-2x)-2(4)+6 = 5-3(x)-3
-4x-8+6 = 5-3x-3
Collect like terms
-4x-2 = -3x+2
Collect like terms
-4x+3x = 2+2
-x = 4
Divide both sides by -1
-x/-1 = 4/-1
x = -4
Hence the value of x that makes the equation true is -4
Answer:
x = 7
y = 2
Step-by-step explanation:
x + y = 9 but y = x - 5
x + (x - 5) = 9
2x - 5 + 5 = 9 + 5
2x/2 = 14/2
x = 7
y = x - 5
y = (7) - 5
y = 2
Answer:
The value of the test statistic is 0.4.
Step-by-step explanation:
The value of the test statistic is given by:
Our test statistic is:
In which X is the sample mean, is expected mean, is the standard deviation and n is the size of the sample.
Using traditional methods, it takes 8.1 hours to receive a basic flying license.
This means that
A researcher used the technique with 23 students and observed that they had a mean of 8.2 hours with a standard deviation of 1.2.
This means that
Find the value of the test statistic.
The value of the test statistic is 0.4.
Answer:
The last one is correct.
Step by step:
Each income has ONLY one outcome.