Answer:
71.43% conditional probability that she will survive to 80 years
Step-by-step explanation:
We have these two following events.
Event A:
Living to be 70. So P(A) = 0.7
Event B:
Living to be 80. So P(B) = 0.5
The conditional probability formula is given by:
In which P(B|A) is the probability of B happening given that A has happened and is the probability of both events happening.
(a) If a woman from that country is 70 years old, what is the conditional probability that she will survive to 80 years
If a person lives to be 80, she must have lived to be 70. So
71.43% conditional probability that she will survive to 80 years
The other person is giving you the right answers, use those there is no point me writing mine he is doing them
Answer:
ow do you find arc length without the radius?
To calculate arc length without radius, you need the central angle and the sector area:
Multiply the area by 2 and divide the result by the central angle in radians.
Find the square root of this division.
Multiply this root by the central angle again to get the arc length.
The units will be the square root of the sector area angle.
Check your result with Omni Calculator.
Or the central angle and the chord length:
Divide the central angle in radians by 2 and perform the sin function on it.
Divide the chord length by double the result of step 1. This gives you the radius.
Multiply the radius by the central angle to get the arc length.
Check your result with Omni Calculator
Step-by-step explanation:
The given angles mean that line QT divides angle PQS.
<em>The measure of </em><em> is </em><em />
Given that:
Since QT divides ;
The equation to calculate is:
This gives
Open bracket
Collect like terms
Hence, the measure of is
Read more about angles at:
brainly.com/question/13954458
Answer:
4 mph
Step-by-step explanation:
Givens
Current = c = 2 mph
Alberta = r = ?
d = 2 mph upstream
d1 = 6 mph downstream
Formula
d = r * t
The time is the same so the formula becomes d/r = t
2/(r - 2) = 6/(r + 2)
Solution
Cross Multiply
2*(r + 2) = 6*(r - 2)
2r + 4 = 6r - 12 Subtract 2r from both sides
4 = 6r - 2r - 12 Combine the right.
4 = 4r - 12 Add 12 to both sides.
4 + 12 = 4r
16 = 4r Divide by 4
16/4 = 4r/4
r = 4
Alberta's rate of travel is 4 mph