Cumulative Exam — Cumulative exam Answers
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21
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For which value of m does the graph of y = 18x2 + mx + 2 have exactly one x-intercept?
A
0B
9C
12D
1622
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The length of a rectangular field is represented by the expression . The width of the field is represented by the expression . How much greater is the length of the field than the width?
A
Option
B
Option
C
Option
D
Option
23
An egg is dropped from a height of 90 ft. If acceleration due to gravity is –16 ft/s2 and initial velocity is 0 ft/s, approximately how long will it take for the egg to reach the ground?h(t) = at2 + vt + h0
A
1.9 sB
2.4 sC
9.7 sD
40.7 s24
Holly finds that (11m – 13n + 6mn) – (10m – 7n + 3mn) = m – 20n + 9mn. What error did Holly make?
A
She only used the additive inverse of 10m when combining like terms.B
She added the polynomials instead of subtracting.C
She only used the additive inverses of –7n and 3mn when combining like terms.D
She did not combine all like terms.25
What are the values of x in the equation x2 – 6x + 9 = 25?
A
x = –2 or x = 8B
x = –1 or x = –11C
x = 1 or x = 11D
x = 2 or x = –8Did you find these answers helpful?
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