Answer:
Step-by-step explanation:
The x-value is 3. Coordinate pairs are labeled as (x, y). In this case, the 3 is in the x position.
The point is located in the 4th quadrant. Quadrant labels move counter-clockwise, from 1 to 4 as shown below. In Quadrant 4, the x-value will always be positive, and the y-value will always be negative. This point has a positive x-value and negative y-value, so it is in this quadrant.
Answer:
50
Step-by-step explanation:
{ (-5)-(-7)-(-3) } x10
{ (-5) +7 +3 } x 10
(-5 +10) x 10
5 x 10 = 50
the corner angle=90⁰ 45+45+90=180
2) 1.2 x 10,000 - 1.5 x 1,000 - 2.2 x 100 = 10,280
3) 7.3 x 100,000 + 1.6 x 1,000,000 + 4.7 x
100,000 = 2,800,000
4) 8.2 x 10,000 - 2.4 x 10,000 - 1.5 x 1,000 = 56,500
5) 2.4 x 1,000 + 3.4 x 10,000 + 1.5 x 1,000 = 37,900
6) 6.2 x 10,000 - 3.4 x 100 - 7.5 x 1,000 = 54,160
7) 8.3 x 100,000 + 1.6 x 10,000,000 + 6.7 x 10,000 = 16,897,000
8) 8.0 x 1,000 - 0.8 x 1,000 - 1.2 x 100 = 7,080
Answer:
Step-by-step explanation:
You can start by recognizing 19/12π = π +7/12π, so the desired sine is ...
sin(19/12π) = -sin(7/12π) = -(sin(3/12π +4/12π)) = -sin(π/4 +π/3)
-sin(π/4 +π/3) = -sin(π/4)cos(π/3) -cos(π/4)sin(π/3)
Of course, you know that ...
sin(π/4) = cos(π/4) = (√2)/2
cos(π/3) = 1/2
sin(π/3) = (√3)/2
So, the desired value is ...
sin(19π/12) = -(√2)/2×1/2 -(√2)/2×(√3/2) = -(√2)/4×(1 +√3)
Comparing this form to the desired answer form, we see ...
A = 2
B = 3
