section 8.4 quadratic applications solving problems solving formulas 8.41
TRANSCRIPT
8.4 1
Section 8.4 Quadratic Applications Solving Problems Solving Formulas
8.4 2
Zen & The Art of Motorcycle Maintenance
mpha
aa
aa
aaaa
aa
aalcd
aa
aa
50
)50)(60(0
3000100
10300)10(300
)10(1
)10(1
2
2
10300300
10300300
10300
300
1300110
300
a
a
tta
tta
DistnceTimeRate
60a
Discard
8.4 3
Filling a Tank Two pipes are connected to the same tank. Working
together, they can fill the tank in 4 hours. When working alone, the larger pipe can fill the tank in 6 hours less than the smaller pipe. How long would the smaller pipe take if working alone?
24140
64)6(4
16
44
arg
2
2
ss
ssss
ss
wholeerlsmaller
)(2,122
1014
2
9619614
)1(2
)24)(1(4)14(14
24141
2
discardxs
s
s
cba
8.4 4
Swing Time – Formula Solving
lgT
g
g
lT
g
g
lT
glT
lforglT
2
2
222
2
22
22
4
44
4
4
2
2
8.4 5
Hanging In There
TV
TV
TV
TV
TV
12
3
3
3
316
48
48
48
2
2
2
8.4 6
Water Balloon Science
8.9
6.19
8.98.98.92
8.92
9.4
8.98.9
6.19
8.99.48.99.4
8.98.9
6.19
9.49.4
8.98.9
6.19
9.49.4
9.4
9.4
9.4
200
2
0
2
0
0
20
2
0022
0
02
2002
2
02
200
2
02
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vs
tvvsvtv
tvs
vt
vstvt
s
vt
vstvts
tvts
8.4 7
What Next? Quadratic Forms!! Present Section 8.5