Answer:
x=-2, y=-3. (-2, -3).
Step-by-step explanation:
-5x+4y=-2
2x-7y=17
-------------------
2(-5x+4y)=2(-2)
5(2x-7y)=5(17)
---------------------
-10x+8y=-4
10x-35y=85
-------------------
-27y=81
y=81/-27
y=-3
2x-7(-3)=17
2x+21=17
2x=17-21
2x=-4
x=-4/2
x=-2
Answer:


Step-by-step explanation:
Required
As a decimal to nearest thousandth
Solving (a): 78.4%

Express as fraction

Solve fraction
----- This is already in thousandth place
Solving (b): 29%

Express as fraction

Solve fraction

Approximate

Given:
The system of equations is


To find:
The true statement about the given system of equations.
Solution:
The slope intercept form of a line is

Where, m is the slope and b is the y-intercept.
We have,


On comparing these two lines with slope intercept form, we get


Since the slopes of the lines are equal but the y-intercepts are different, therefore, the two lines are parallel and the system has no solution.
Therefore, the correct option is A.
Answer:
8/10, 12/15, 16/20 and so on
Step-by-step explanation:
4x2/5x2 = 8/10
4x3/5x3 = 12/15
4x4/5x4 = 16/20 and so on