Solve the equation 4/a + 1/5a = 3
21/5
12/5
11/3
14/15
1/3
Correct answer is B
No explanation has been provided for this answer.
If x is a real number which of the following is more illustrated on the number line?
x < 4
x > -2
-2 < x ≤ 4
-3 ≤ x < 4
-2 ≤ x < 4
Correct answer is E
No explanation has been provided for this answer.
If 3p - q = 6 and 2p + 3q = 4, find q
0
1/2
2/3
1
33/7
Correct answer is A
3p - q = 6 ........ 1
2p + 3q = 4 ....... 2
Multiply eqn 1 by 3
9p - 3q = 18 ........ 3
2p - 3q = 4 ......... 2
Add eqn3 and eqn2
11p = 22 => p = 22/11 = 2
Substitute for p =2 in eqn1
3p - q = 6
3x2 - q = 6 => 6 - q = 6 => -q = 6 - 6
q = 0
Correct answer is A
5x−y−4y−x
= 5(y−x)−4(x−y)(x−y)(y−x)
= 5y−5x−4x+4y(x−y)(y−x)
= 9y−9x(x−y)(y−x)
= 9(y−x)(x−y)(y−x)
= 9x−y
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