<h2>
Answer:</h2>
√44
2 Real Roots
<h2>
Step-by-step explanation:</h2>
Looking at the image attached, the discriminant is the value under the square root.
In the equation given:
a = 1
b = -8
c = 5
The discriminant is therefore:
√(b²- 4ac) = √(-8²- (4*1*5)) = √(64-20) = √44
√44 is a positive number. Because it is positive, there must be 2 real roots.
If it were negative, there would be 2 imaginary roots.
If it were zero, there would be 1 real root.
Answer:
28 Square units
Step-by-step explanation:
From the given data in the problem, the longitude is essentially the same, and using the coordinates, the locations are 8° apart. The 8° is 8/360 of the circumference of the circle. The circumference is 2π • 3960. <span>Substituting, </span><span>(8 • 2π • 3960) / 360 = 4π • 44 = 553 miles. Thus, option B is the answer. </span>
Answer:
a) x=12
b) x=8.71
c) x=10.95
d) x=3.92
e) x=5.152
Step-by-step explanation:
a) x=12.
To have a probability of 0.5, x must be the mean of X.
b) x=8.71
c) x=10.95
d) x=3.92
If we define Y=X-12, then
For z=1.96, the probability around the mean is 0.95. Then:
e) x=5.152
As in the question d, the area around the mean now is 0.99. This happens when z=2.576. Then:
