feet.....
He wouldn't use inches, or meters..... Don't over think it.... think of a normal garage.
I believe the correct answer is B. To get from the origin to the point (-6, 9), you have to move 6 units to the left, then 9 units up. In the cartesian coordinate, the vertical axis represents y and the horizontal represents x. The left and down directions are negative and the right and up directions are positive. Since the x value of the point is negative so we have to move to the left direction and since y value is positive we go to the up direction.
3t = 5t - 8
-2t = -8
t = 4
Now put that into -4t + 5:
-4t + 5
-4(4) + 5
-16 + 5
-11
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The angles are B and C.
The three angles add up to 180º
A=80º
B
C
A+B+C=180º
80º+B+C=180º
B+C=180º-80º
B+C=100º (1)
The ratio between A and B is 7/13 ; therefore:
B/C=7/13 ⇒B=7C/13 (2)
With the equations (1) and (2), we make a system of equations:
B+C=100
B=7C/13
We can solve this system of equations by substitution method:
7C/13 + C=100
least common multiple=13
7C+13C=1300
20C=1300
C=1300/20
C=65
B=7C/13
B=7*65/13
B=455/13
B=35º
Answer: The measures of those two angles are 65º and 35º.
