2x + 4y = 8
x + 2y = 3
3x + 6y = 11
Answer:
D, D, A, C
Step-by-step explanation:
Congruent means equal.
T and r are alternate angles
Vertically opposite angles are equal
Y is 47 degrees because since the full angle is 90 degrees, subtract:
90-43 = 47
Hope this helps :)
-jp524
Quick answer Sin(570) = - 1/2
Comment
570 as an angle contains 1 complete revolution of the terminal arm. The terminal arm begins at the origin and the other (in this case swings around until it records 570° turning around the x axis in an anticlockwise direction.
Anticlockwise means going from 12 o'clock to 9 o'clock to 6 o'clock then 3 o'clock and back to 12 o'clock.
What is 570° (∅) degrees equivalent to?
We keep on subtracting 360 until we get a number between 0 and 360 inclusive.
Written this way 0 ≤∅≤360
570 - 360 = 210°
So we need to find the equivalent of 210°
Method
210° = 180° + 30°
This means that ∅ is 30° below the x axis in the 3rd quadrant.
Sin(30) = 1/2
In the third quadrant, the sine is minus. so
sin(210°) = - 1/2 <<<<<<< Answer
Answer:
the unit rate is 70 miles per 1 hour
Step-by-step explanation:
Answer:
the answer is (-3,0) or 4
Step-by-step explanation:
