Solve x^2 + 13 = 4x by using the quadratic formula.
Responda
2 + 3i
2 - 3i
4 + 6i
4 - 6i
5 ; -1
Questão 3
Questão
The discriminant of 2x^2 + 3x + 1 = 0 is -2
Responda
True
False
Questão 4
Questão
2x^2 + 3x + 1 = 0 has 2 REAL solutions.
Responda
True
False
Questão 5
Questão
Solve 6x^2 - 13x - 8 = 0 by factoring.
Responda
x = 1/2; x = -8/3
x = -1/2; x = 8/3
x = 1; x = 3
Questão 6
Questão
Solve: 4 - 5x = 3x + 14
Responda
x = -5/2
x = 5/4
x = -5/4
Questão 7
Questão
Solve: - 2x + 7 < 5x + 1
Responda
x > 6/7
x < 6/7
x > - 6/7
Questão 8
Questão
The length of a rectangle is 9 feet less than twice the width. The perimeter is 54 ft, find the width and length.
Responda
w = 12
l = 15
w = 9
l = 36
w = 6
l = 42
Questão 9
Questão
Force, f, is directly proportional to the acceleration, a. If a force of 10 pounds produces an acceleration of 2 feet per second, what will be produced by a 15- pound force?
The acceleration for a 15-pound force is 3 feet per second.
Responda
True
False
Questão 10
Questão
The number of MP3 players a company can sell is inversely proportional to the price of the player. If 5000 MP3 players can be sold when the prices is $150, how many players can be sold if the price is $125?
Responda
33.333
750000
6000
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