Answer:
Step-by-step explanation:
B
Hope I heped
Answer:
The roots of the equation is real and repeated
Step-by-step explanation:
Here, we want to describe the nature of the roots of the given quadratic equation
To get the nature of the roots, we find the discriminant of the equation
The discriminant is;
b^2 - 4ac
In this case, b = -28 , a = 49 and c = 4
The discriminant is thus;
-28^2 - 4(49)(4)
= 784 - 784 = 0
Since the discriminant is zero, this means that the quadratic equation has real roots which are the same
Answer:
The mean increases and the median changes to 4.
Step-by-step explanation:
To find the mean. You need to add all of the numbers together then divide by how many numbers there are. The median is found by the middle number.
Solving 
we get, 
Step-by-step explanation:
We need to solve:
Solving:
Adding -ln(2) on both sides:
Using logarithmic rule: if 
So,
Simplifying:
So, Solving we get,
Keywords: Logarithms
Learn more about Logarithms at:
#learnwithBrainly
