Answer:
The system of equations has a one unique solution
Step-by-step explanation:
To quickly determine the number of solutions of a linear system of equations, we need to express each of the equations in slope-intercept form, so we can compare their slopes, and decide:
1) if they intersect at a unique point (when the slopes are different) thus giving a one solution, or
2) if the slopes have the exact same value giving parallel lines (with no intersections, and the y-intercept is different so there is no solution), or
3) if there is an infinite number of solutions (both lines are exactly the same, that is same slope and same y-intercept)
So we write them in slope -intercept form:
First equation:

second equation:

So we see that their slopes are different (for the first one slope = -6, and for the second one slope= -3/2) and then the lines must intercept in a one unique point. Therefore the system of equations has a one unique solution.
3 x 10^6. It looks funny on here but the exponent of 6 goes with 10.
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Answer:
X=5 the angle is 76 degrees
Step-by-step explanation:
The bottom angles are corresponding. So 52+52=104, so you need 76 more degrees. Then simple math to caculate x.
Answer:
20
Step-by-step explanation:
substitute first to get:
6 + (3·4 - 5)2
multiply 3 and 4 to get 12:
6 + (12 - 5)2
subtract 12 and 5 to get 7:
6 + 7(2)
multiply 7 and 2 to get 14
6 + 14 = 20