Answer:
Step-by-step explanation:
Given that you choose at random a real number X from the interval [2, 10].
a) Since this is a contnuous interval with all number in between equally likely
E = probability for choosing a real number is U(2,10)
pdf of E is 
b) P(X>5) = 
For
P(X<5 or x>7) = 1-P(5<x<7)
= 
Answer:
(f + g)(x) = – 3x^2 + 5x - 8
Step-by-step explanation:
(f + g)(x) = f(x) + g(x)
= 5x^2 + 9x – 4 + (– 8x^2 – 3x – 4)
= 5x^2 + 9x – 4 – 8x^2 – 3x – 4
Combine
= – 3x^2 + 5x - 8
C lies on AB
True
BA is a ray on plane P
A ray passes through the plane. In this case, the line is on the plane, not passing through. So it is not a ray.
AB + BC = AC
True.
X, Y and Z are colinear
Colinear points are part of the same line. In this question, there is no line passing through these points, so they are not colinear.
W, A and Y are coplanar:
Coplanar points are on the same plane. In this item, points A and Y are on the same plane. However, point W is not, so they are not coplanar.
So the equation would be 10/N+3-6.
10/2=5 5+3=8 8-6=2. so if you plug in 2, it would make an answer of 2.
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