The right answer for the question that is being asked and shown above is that:
1)linear equation (specific) => A)2x + 3y = 8
2)graph of system of linear equations with no solution => E)parallel lines
3)slope of a vertical line => D)no slope
4)graph of linear inequality => <span>F)half-plane </span>
5)slope of a horizontal line => <span>C)0 </span>
6)system of linear equations => B)2x + y = 7 and 3x - 4y = 8
The answer for G=7 and H=3
Hope this helps!
The correct answer is <u><em>(2,−1)</em></u>
{2x + 3y = 18
x + 7y = 31}
2x+ 3y = 18
x=31-7
2(31-7)+3y=18
y=4
x=31-7*4
x=3
(x,y) = (3,4)
There is a probability of 77% that the mean of this sample is between 19.25 hours and 21.0 hours
Z score is used to determine by how many standard deviations the raw score is above or below the mean. The z score is given by:

Given that μ = 20, σ = 7, n = 125.
For x = 19.25:

From the normal distribution table, P(-1.20 < z < 0.62) = P(z < 0.62) - P(z < -1.2) = 0.8849 - 0.1151 = 0.7698 = 77%
There is a probability of 77% that the mean of this sample is between 19.25 hours and 21.0 hours
Find out more on z score at: brainly.com/question/25638875