Answer:
a=4, b = -2
Step-by-step explanation:
Use elimination: subtract two equations. you get -6b = 12, so b = -2. Substitute this into the first equation and get a -8 = -4, so a = 4
Theoretically she couldn’t spend that amount if money and thus her account balance will be negative. -61.72, to be precise.
Answer:
It will be about 12 inches
9514 1404 393
Answer:
13 nickels
Step-by-step explanation:
Let n represent the number of nickels Bob has. Then 18-n is the number of dimes, and the total value (in cents) is ...
5n +10(18-n) = 115
-5n +180 = 115 . . . simplify
65 = 5n . . . . . add 5n-115
13 = n . . . . . . . divide by 5
Bob has 13 nickels.
Answer:
82
Step-by-step explanation:
1'st step: 
+ 
= 
is the formula for the pythagorean theorem
2'nd step : 
+ 
=
3'rd step: 324+6400 =
4'rd step: 6724=
5'th step: 
=82
6'th step : therefore the value of c is 82 cm
