Name the quadrant in which the angle ? lies.cot ? > 0, sin ? < 0
A. I
B. II
C. III
D. IV
Answer: C
You might also like to view...
The two triangles below are similar. Find the missing lengths.
A. x = 4 B. x = 6 C. x = 3 D. x = 9
Add.9985 + 8134
A. 18,109 B. 18,019 C. 17,119 D. 18,119
Rotate the axes so that the new equation contains no xy-term. Discuss the new equation.31x2 + 10
xy + 21y2 -144 = 0
A. ? = 45°
y'2 = -4
x'
parabola
vertex at (0, 0)
focus at (-
, 0)
B. ? = 45°
x'2 = -4
y'
parabola
vertex at (0, 0)
focus at (0, -
)
C. ? = 30°
+ 
= 1
ellipse
center at (0, 0)
major axis is y'-axis
vertices at (0, ±3)
D. ? = 36.9°
+ 
= 1
ellipse
center at (0, 0)
major axis is x'-axis
vertices at (±3, 0)
Use an algebraic equation to find a solution.A chemist needs 140 milliliters of a 52% solution but has only 28% and 56% solutions available. How many milliliters of each should be mixed to get the desired solution?
A. 120 ml of 28%; 20 ml of 56% B. 110 ml of 28%; 30 ml of 56% C. 30 ml of 28%; 110 ml of 56% D. 20 ml of 28%; 120 ml of 56%