Answer:-21
Step-by-step explanation:
Answer:
The mean is 4.
Step-by-step explanation:
Mean simply means average. To do so, just add up all the numbers and divide by the amount of numbers present.
2 + 5 + 5 + 6 + 7 + 1 + 2 = 28/7 = 4
<u>Answer:</u>
The correct answer option is C) y = -2/3x - 13/3.
<u>Step-by-step explanation:</u>
We are given a straight line graph with one known point and we are to find its equation.
We will take one more point on the line to find the slope.
(-5, -1) and (-2, -3)
Slope (m) =
Now finding the y-intercept:
Therefore, the equation of this line is y = -2/3x - 13/3.
Answer: option c is the correct answer.
Step-by-step explanation:
The given system of equations is expressed as
5x + 2y = - 38 - - - - - - - - - - -1
6x + 10y = - 19 - - - - - - - - - - - 2
We would eliminate x by multiplying equation 1 by 6 and equation 2 by 5. It becomes
30x + 12y = - 228
30x + 50y = - 95
Subtracting, it becomes
- 38y = - 133
Dividing the left hand side and the right hand side of the equation by - 38, it becomes
y = - 133/-38 = 3.5
Substituting y = 3.5 into equation 1, it becomes
5x + 2 × 3.5 = - 38
5x + 7 = - 38
5x = - 38 - 7 = - 45
Dividing the left hand side and the right hand side of the equation by 5, it becomes
x = - 45/5 = - 9