If you subtract negative from negative the answer will be positive if u subtract a nevagative from a positive it will become a negative.
Answer:
The number is 21.
Step-by-step explanation:
First you need to solve for n.
So the equation would be 2n = |5n-63|
First you'd subtract 5n from each side, that would give you -3n=|-63|
Then you need to divide each side by -3 to get n=21.
~~~~~
To check, you can just plug 21 back into the equation.
2(21) = |5(21) - 63|
42 = |105-63|
42 = |42|
42 = 42
Answer:
k = 1
Step-by-step explanation:
<u>Discriminant</u>




As we need to determine the value of k that will give <u>one solution</u>, set the <u>discriminant to zero</u>.
<u>Given equation</u>:

Therefore:
Substitute these values into the discriminant and solve for k:

Answer:
Step-by-step explanation:
I think it's the 2nd one