The correct answer for the first one is: <span>a1=3;an=<span>an−1</span>+4 </span>
Answer:
y=-1/3x+4
Step-by-step explanation:
1/3x+y=4
y=4-1/3x
y=-1/3x+4
Answer: Option 'a' is correct.
Step-by-step explanation:
As we know about the discriminant value i.e.
if we have given a quadratic equation :
then,
discriminant value will be
There are 3 properties regarding discriminant value as follows:
So, here we need a zero real number solutions i.e. there does not exists any real number.
So,
Hence, Option'a' is correct.
A. 30
It is derived from 180
<span>6x-(4x-4)=14
</span>
We have to <span>unfold the brackets and change the sign of each term.
</span><span>
</span><span>6x - 4x + 4 = 14
</span><span>
</span><span>2x + 4 = 14 | - 4
</span><span>
</span><span>2x + 4 - 4 = 14 - 4
</span><span>
</span><span>2x = 10 | :2
</span><span>
</span><span>2x:2 = 10:2
</span><span>
</span><span>x = 5
</span><span>
</span><span>
</span><span>Verification : 6*5 -(4*5 - 4) = 14
</span><span>
</span><span> 30 - 20 + 4 = 14
</span><span>
</span><span> 10 + 4 = 14
</span><span>
</span><span> 14 = 14 - true
</span>