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
Sin63= 0.89
cos27= 0.89
tan57= 1.54
Answer:
The change in the depth of water per minute
Step-by-step explanation:
We are given a graph that shows the depth of water in a bathtub as water drains out
Slope is the rate of change
We can see in the graph that on increasing the value x , the value of y decreases .
x axis represents the minutes
y axis represents the depth of water(inches)
So, On increasing minutes , the depth of water decreases
So, there is a change in depth of water per minute
So, Option D is correct
The change in the depth of water per minute
Answer: A (-4,5)
Step-by-step explanation:
The radius is half the diameter, so the formula would be r=d divided by 2