Solve the equation 5x2 - 4x - 1 = 0
-1, 1/5
-1, -1/5
1, 1/5
1, -1/5
-1, 5
Correct answer is D
5x2 - 4x - 1 = 0
5x2 5x + x -1 = 0
5x(x - 1) + (x - 1) = 0
(5x + 1)(x -1) = 0
x = -1/5 or 1 = 0
Simplify \(\frac{8^{\frac{2}{3}}*27^{\frac{-1}{3}}}{64^{\frac{1}{3}}}\)
-3
\(\frac{1}{9}\)
\(\frac{1}{3}\)
\(\frac{27}{8}\)
4
Correct answer is C
\(\frac{8^{\frac{2}{3}}*27^{\frac{-1}{3}}}{64^{\frac{1}{3}}}\)
\(\frac{2^2*3^{-3}}{4} = 3^{-1} = \frac{1}{3}\)
3.05%
3.95%
15.00%
25.00%
39.30%
Correct answer is B
No explanation has been provided for this answer.
Find the number whose logarithm to base 10 is 2.6025
0.0004
4.004
40.04
400.4
4004
Correct answer is D
No explanation has been provided for this answer.
3/2, 3, 6
6, 3, 3/2
3/2, 3, 1/3
2/3, 3, 8/3
3/2, 0, 6
Correct answer is B
When n = 1, n = 2, n = 3
3 x 22 - 1 = 6
3 x 22 - 2 = 3
3 x 22 - 3 = 3/2