(2x - 9)(x - 5)
(2x-15)(x + 3)
(2x +15)(x - 3)
(2x -15(x - 3)
(2x - 9)(x + 5)
Correct answer is D
2x\(^2\) - 21x + 45
= 2x\(^2\) - 15x - 6x + 45
= x(2x - 15) - 3(2x - 15)
= (x - 3)(2x - 15)
Using the diagram above, calculate the effective capacitance of the circuit
1.56μf
3.00μF
3.71μF
9.00μF
Correct answer is D
No explanation has been provided for this answer.
Write as a single fraction: \(\frac{5}{6r} - \frac{3}{4r}\)
Correct answer is E
\(\frac{5}{6r} - \frac{3}{4r}\)
= \(\frac{10 - 9}{12r}\)
= \(\frac{1}{12r}\)
What is the difference between viviparous and oviparous animals?
Possessing eggs with yolks
Laying unfertilized eggs
Possessing yolkless eggs
Protecting eggs from predators
Laying and brooding eggs
Correct answer is E
No explanation has been provided for this answer.
5V
10V
20V
60V
Correct answer is D
Voltage across 5Ω resistor = IR = 2 × 5 = 10V
Since voltage in a parallel connection is the same, voltage across 10Ω is also 10V
Current flowing across the 10Ω resistor
I = V/R = 10/10
Current I= 1A
Total current flowing = 2 + 1 = 3A
Voltage across 20Ω resistor = IR
= 3 × 20
= 60V
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