We have:
x - 3y = 4
Pass -3y to the second member of equation
x = 4 + 3y
Now replace on the other equation tge value of x
2x + y = 7
2.(4 + 3y) + y = 7
Do the diatributive
2 ×4 + 2×3y + y = 7
8 +6y+y = 7
8 + 7y = 7
7y = 7 - 8
7y = - 1
y = -1/7
Now replace y = -1/7 in any equation
x = 4 + 3y
x = 4 + 3 . -1/7
x = 4 -3/7
x = (4×7 -3)/7
x = 25/7
ZY
They connect Adjacently...
Answer:In the following diagram, two parallel lines are cut by a transversal. What is the value of x x? Solution: The two angles 3x −15 3 x − 15 and 2x +7 2 x + 7 are equivalent. That is: 3x −15 = 2x +7 3 x − 15 = 2 x + 7
In the following diagram, two parallel lines are cut by a transversal. What is the value of x x? Solution: The two angles 3x −15 3 x − 15 and 2x +7 2 x + 7 are equivalent. That is: 3x −15 = 2x +7 3 x − 15 = 2 x + 7
Step-by-step explanation: : 3
Answer:
y = -6x + 2
Step-by-step explanation:
To find the slope, you do rise/run. To get to one point from another, you move one unit to the right, and six units down.
Now to find the y-intercept, you need to identify the point that meets in the y-axis. That would be 2.
Hope this helps!
Answer:
(22.74,24.06) is the required 95% confidence interval for the population mean ACT score of University of Oklahoma students.
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 121
Sample mean = 23.4
Sample standard deviation = 3.65
Level of significance = 0.05
Degree of freedom
95% Confidence interval:
Calculation of critical value:
Putting the values, we get,
(22.74,24.06) is the required 95% confidence interval for the population mean ACT score of University of Oklahoma students.
