By making the determinant equal to or smaller than zero, we will see that there are 15 values of n such that the inequality has no real solution.
<h3>
Solving the inequality:</h3>
Here we have the inequality:
x^2 + n*x + 15 < 0
We want to see for which values of n we don't have real solutions.
Now, we can write the quadratic equation:
y = x^2 + nx + 15.
If the determinant of this quadratic equation is negative or 0, then we have a single root or we don't have roots, and because the leading coefficient is positive, that would mean that the function never becomes negative. Then for these cases, the inequality has no real solutions.
Then we must have:
n^2 - 4*15*1 ≤ 0
Now we can solve this for n.
n^2 ≤ 60
Then if n^2 is smaller than 60, we don't have real solutions, and we know that:
√60 = 7.75
Then we have:
-7.75 ≤ n ≤ 7.75
But n can only be an integer, so we can write:
-7 ≤ n ≤ 7
From -7 to 7 there are 15 integers, then there are 15 values of n such that the inequality has no real solutions.
If you want to learn more about inequalities, you can read:
brainly.com/question/11234618
Answer:
The poultry house must have to be well ventilated.
Ensure sufficient entrance of sunlight and fresh air inside the house.
It would be better if the house become situated north to south faced.
The proper distance of one house to another house is about 40 feet.
Clean the house properly before keeping the birds inside the poultry house.
Make a deep liter and keep it dry and clean always.
Wooden and rice bran can be used for making liter.
Keep feed and feeding equipment in proper distance inside the poultry house according to the number and demand of poultry birds.
The poultry house and all equipment must have to be free from virus, parasites and germs.
Build the poultry house in such a place where all the poultry birds are free from all types of wild animals and other predators.
The poultry housing area will be free from loud sound/sound pollution.
Make the poultry house in quite and calm place.
It would be better if the house located in an open air place.
However, to be successful in poultry farming the producers must have to be aware in making the poultry house. Be sure that all necessary equipment and facilities are available inside the poultry house.
Explanation:
The only reaction that will most likely take place based on the activity series is; C: Ba + Na₂CO₃
<h3>Activity Series</h3>
From the activity series given, we can say that during a displacement reaction, the more reactive metal will always displace the lesser reactive metal from a compound.
Let us look at each of the given options;
A) Ag + FeCl₃
From the activity series, Silver(Ag) is less reactive than Iron(Fe) and as such Silver cannot displace iron from its' compound.
B) Zn + CaO
Zinc (Zn) is a less reactive metal than Calcium (Ca), so it cannot cannot displace Calcium from its' compound.
C) Ba + Na₂CO₃
Barium (Ba) is a more reactive metal than Sodium (Na), and therefore Barium will displace sodium from its compound in a displacement reaction.
D) Cr + KNO₃
Chromium (Cr) is a lesser reactive metal than Potassium (K), and it therefore cannot displace Potassium from its compound.
Complete question is;
Which reaction will most likely take place based on the activity series? Li > K Ba > CaNa > Mn > Zn > Cr> Fe> Cd Ni > H > Sb > Cu > Ag > Pd > Hg > Pt
A. Ag + FeCl₃
B. Zn + CaO
C. Ba + Na₂CO₃
D. Cr + KNO₃
Read more about Activity Series at; brainly.com/question/17469010
Answer:
Yes i can give you some
Explanation:
The Big Apple is a nickname given to Washington D.C in 1971.
True or False?
Muddy York is a nickname for New York in the Winter.
Peanuts are not nuts!
People may sneeze or cough while sleeping deeply.
Copyrights depreciate over time
Answer:
If a mother is smoking and there are significant birth weights, a bar graph will be most effective. A bar graph can show how many children have similar weights, and you can tell which weights are most common.
Hope this helped.
