Answer:
skew
Step-by-step explanation:
Perpendicular lines must intersect. In fact, they intersect forming right angles.
Lines AC and RC are not in the same plane and do not intersect.
They are called "skew lines."
Answer:
Step-by-step explanation:
The two inside angles will sum to 180°.
The top to angles are equal.
Think about this as what if both of the parallel lines were intersected by a perpendicuar line. Every angle would be a right triangle 90°. The inside angles will sum to 180° and the opposite angles are again equal.
(2x + 18) + (8x + 12) = 180
10x + 30 = 180
10x = 150
x = 15
-------------------------
(3y - 18) = (8x + 12) x = 15
(3y - 18) = (8(15) + 12)
(3y - 18) = (120 + 12)
(3y - 18) = 132
3y = 132 + 18
3y = 150
y = 50
For chemistry you would need to get an 84.
For Spanish you would need to get an 82.
Best of luck
Answer:
38.25
Step-by-step explanation:
Multiply 85 by 55 and you get 4675 then divide by 100.
Then you will get 46.75. Then subtract 46.75 from 85
Answer:
78
Step-by-step explanation:
you have to multipy 13 and 12 then divide it by 2.(13*12=156/2=78)
