Answer:
Step-by-step explanation:
b^2 - 4ac > 0
(-8)^2 - 4(1)(-2) = 64 + 8 = 72
two solutions
Answer:
37.5
Step-by-step explanation:
5*15=75 then 75/2=37.5
.05n + .10d = 4.85
n - 34 = d
Substitute the second equation into the first equation and solve for n.
.05n + .10(n - 34) = 4.85
.05n + .10n - 3.4 = 4.85
combine like terms
.15n - 3.4 = 4.85
add 3.4 to both sides
.15n = 8.25
divide both sides by .15
n = 55
d = n - 34
d = 55 - 34
d = 21
CHECK
21 * .1 = 2.10
55 * .05 = 2.75
2.10 + 2.75 = 4.85
21 dimes and 55 nickels
Answer:
825 tokens
Step-by-step explanation:
Each game costs 25 tokens, and she played 33 games.
To find the total number of tokens, multiply the cost for one game by home many games she played.
cost of one game * number of games played
25*33=825
She used 825 tokens on the games