Use the standard normal curve table to find the z-score for the given condition.4.01% of the total area is to the left of z.
A. 1.70
B. -1.75
C. -1.74
D. -1.76
Answer: B
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Decide whether the statement is an example of the commutative, associative, identity, inverse, or distributive property.3(5f) - 3(5g) = 3(5f - 5g)
A. Associative B. Distributive C. Commutative D. Identity
Rotate the axes so that the new equation contains no xy-term. Discuss the new equation.31x2 + 10
xy + 21y2 -144 = 0
A. ? = 45°
x'2 = -4
y'
parabola
vertex at (0, 0)
focus at (0, -
)
B. ? = 45°
y'2 = -4
x'
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)
For the following functions, use linearization and the values of z, zx, and zy, at (a, b)t o estimate z (x, y) .
Find the product and write the result in standard form.(9 + 3i)(9 - 3i)
A. 90 B. 72 C. 81 - 9i2 D. 81 - 9i