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Yomarie1104
20.07.2019 •
Mathematics
Which of the following graphs shows a pair of lines that represent the equations with a solution (−2, 5)? a coordinate grid is shown from negative 8 to positive 8 on the x axis and also on the y axis. a pair of lines is shown intersecting on ordered pair 2 units to the right and 5 units down. a coordinate grid is shown from negative 8 to positive 8 on the x axis and also on the y axis. a pair of lines is shown intersecting on ordered pair 5 units to the right and 2 units down. a coordinate grid is shown from negative 8 to positive 8 on the x axis and also on the y axis. a pair of lines is shown intersecting on ordered pair 5 places to the left and 2 units up. a coordinate grid is shown from negative 8 to positive 8 on the x axis and also on the y axis. a pair of lines is shown intersecting on ordered pair 2 units to the left and 5 units up.
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Ответ:
A coordinate grid is shown from negative 8 to positive 8 on the x axis and also on the y axis. A pair of lines is shown intersecting on ordered pair 2 units to the left and 5 units up.
Explanation:
The solution of the system would be the point of intersection of the two lines.
Before, we begin, remember that:
The right of the origin is the positive x-axis
The left of the origin is the negative x-axis
Above the origin is the positive y-axis
Below the origin is the negative y-axis
Now, let's check the givens:
1- Option A:
Intersection at 2 units to the right and 5 units down. This means that the intersection is at (2,-5) > incorrect option
2- Option B:
Intersection at 5 units to the right and 2 units down. This means that the intersection is at (5,-2) > incorrect option
3- Option C:
Intersection at 5 units to the left and 2 units up. This means that the intersection is at (-5,2) > incorrect option
4- Option D:
Intersection at 2 units to the left and 5 units up. This means that the intersection is at (-2,5) > correct option
Based on the above, the only correct choice is the last one
Hope this helps :)
Ответ:
Ответ:
We can find r
Step-by-step explanation:
The law of sine also known as the sine rule, stipulates that the ratio of the length of a side of a triangle and the sine of the angle facing that side is a constant for all the sides of the triangle.
Mathematically, what this means is that;
r/Sin R = q/Sin Q = s/Sin S
Now, for this question, what do we have?
we have angle Q and the side facing it q
We also have angle R.
So the side we can find from here using the sine rule is no other than the side r.
We can find the length of side r from the triangle using the sine rule
And thus we have something like;
9.5/Sine 18 = r/Sine 135