Answer:
Y=t+5
Step-by-step explanation:
Bob starts running...(1)
Bill starts running 5 seconds later...(2)
From (1) and (2) we know that Bob had been running for 5 seconds when Bill started running.
The expression we are looking for is
Y=t+5
Y is the number of seconds Bob has been running
t is the number of seconds Bill has been running
Check the image for the diagram.
Total time = upstream time + downstream time
he rowed the same distance both ways.
upstream time = D/4
downstream time = D/6
total time = D/4 + D/6 = 3D/12 + 2D/12 = 5D/12 = 3 hours
D = 3*12/5 = 36/5 or 7.2 miles
where D is the one-way distance. The total distance he rowed is 2*D = 72/5 or 14.4 miles
Answer:8 or 9 ft
Step-by-step explanation:
Given
The area of the pool is
The area is in the form of a quadratic equation
So, the roots of the equation will give the length and width of the pool
Therefore length and width can either be .
Answer:
Step-by-step explanation:
<u>Given system:</u>
<u>Multiply the first equation by 7 and add up the equations:</u>
- -7x + 7y + 7x + 3y = 7*8 - 16
- 10y = 40
- y = 4
<u>Find y:</u>
Answer:
a) 0.0567
b) 0.4717
c) 0.099057
Step-by-step explanation:
Given:
P( population are 64 or over ) = 21% = 0.21
P( Population are under 64 ) = 1 - P( population are 64 or over )
= 1 - 0.21 = 0.79
P( 64 or over have loans ) = 27% = 0.27
P( under 64 have loans ) = 52% = 0.52
Now,
a) P( 64 or over and has a loan )
= P( 64 or over have loans ) × P( population are 64 or over )
= 0.27 × 0.21
= 0.0567
b) P( Has a loan )
= P( population are 64 or over ) × P( 64 or over have loans ) + P( Population are under 64 ) × P( under 64 have loans )
= ( 0.21 × 0.27 ) + ( 0.79 × 0.52 )
= 0.0609 + 0.4108
= 0.4717
c) P( events that person is 64 or over and that the person has a loan independent )
= P( population are 64 or over ) × P( Has a loan )
= 0.21 × 0.4717
= 0.099057