Answer:
3,230
Step-by-step explanation:
$4.31 in US dollars, and 3.31 in pounds
A-b=21
5a-2b=18
We can use substitution here. Take the first equation and solve for A. (Picking this one because it's easy)
a = 21+b
Plugin to the second equation:5(21+b)-2b=18
Simplify: 105 + 5b - 2b = 18
Simplify: 105 + 3b = 18
Subtract both sides: 3b = 18-105
Simplify: 3b = -87
Divide: b = -29
Plug back into the first: a=21+b
a = 21 - 29
a = -8
Option D
Answer:
jessica run mile per5 minute.
8/5 mile=8 minutes
1 mile=8/(8/5)=8×5/8=5 minute.
The probability would be out of 100,
in this case if it refers to the data from 2009 it would be 39:61
