AnswersOC27 ALG 2-1200330-S1-Degele-VOL7006PChapter 3 Part 1 Unit TEST: Quadratic Equations and Complex Numbers
Chapter 3 Part 1 Unit TEST: Quadratic Equations and Complex Numbers Answers
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Solve for in the equation .
A
x = negative 4 plus-or-minus StartRoot 37 EndRoot i
B
x = –4 ± 5iC
x = 4 plus-or-minus StartRoot 37 EndRoot i
D
x = 4 ± 5i22
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When a baseball is hit by a batter, the height of the ball, h(t), at time t, , is determined by the equation . If t is in seconds, for which interval of time is the height of the ball greater than or equal to 52 feet?
A
Option
B
Option
C
Option
D
Option
23
Which statement about the following equation is true?3x2 – 8x + 5 = 5x2
A
The discriminant is less than 0, so there are two real roots.B
The discriminant is greater than 0, so there are two real roots.C
The discriminant is less than 0, so there are two complex roots.D
The discriminant is greater than 0, so there are two complex roots.24
What is the absolute value of the complex number ?
A
StartRoot 14 EndRoot
B
3 StartRoot 2 EndRoot
C
14D
1825
A soccer ball is kicked upward from a hill and then falls to the ground. The height, in feet, of the ball after t sec is modeled by the function h(t) = –16t2 + 26t +12. What is the initial height of the ball?
A
–16 ftB
–12 ftC
12 ftD
22 ftDid you find these answers helpful?
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