Please help!! Sally has $4.60 change in her pocket. she has only 20 cents and 50 cent coins, 14 coins in total. If t is the numb
er of 20c coins that sally has, find t.
1 answer:
Answer:
8
Step-by-step explanation:
4.60=0.2t+0.5f
t=20 cent coins
f=fifty cent coins
t+f=14
multiply the second equation by 0.5 to eliminate the f and subtract one equation from another.
4.60=0.2t+0.5f
-(7 =0.5t+0.5f)
-------------------------------
-2.4= -0.3t
multiply both sides by -0.3 to get 8=t. That's the # of 20 cent coins.
You might be interested in
Answer:
-9/5 , -8/5 , -7/5, -6/5 , -5/5.
Step-by-step explanation:
brainliest plsssss
You know that the average house price is $250,000 dollars
Median means medium
Answer:
(x+7)(x-7)
Step-by-step explanation:
x²-49
=x²-7²
=(x+7)(x-7)
