If
and
are mutually independent, then
and
.
If
and
are independent, then
. Ditto for
and
.
The inclusion/exclusion principle says that
Since
and
are mutually exclusive, their intersection is the empty set. It then follows that
also is the empty set, so the last probability is also 0.
Plug in what we know:
C, it has the ratio of $9 per hour which is a greater ration than all the other options.
Hope this helps!
Answer: 80%
Step-by-step explanation:
To find the average, add all the grades and divide by the number of grades
sum of all grades/number of grades
85 + 100 + 88 + 80 + 95 + x/6
She wants to have an 88, so we can set the expression above equal to 88
448 + x/6= 88
Multiply by 6 on both sides
448 + x = 528
Subtract 448 on both sides
x=80
She needs to score at least an 80 to get an 88 average.
Hope this helped!
Angles 1, 3, and 4 make up a straight line.
Thus, 3x + 90 + 3x - 6 = 180 (angle sum of straight line)
6x - 6 = 90
6x = 96
x = 16
Now angle 1 becomes 3(16) = 48
Angle 1, 2, and 3 also make up a straight line.
Thus, angle 2 + 48 + 90 = 180
angle 2 + 138 = 180
angle 2, therefore, becomes 42. In essence, (A)
Answer:
D
Step-by-step explanation:
36 ÷ ( x + 9 ) = ???
36 ÷ ( 3 + 9 ) = ???
36 ÷ (12) = 3
Ans . 3
HOPE THIS HELPS
PLZZ MARK BRAINLIEST
