Name
Solve the equation.
t. 4xz - 29:7
4' i*-?:a
2; y2
o
- 5o = 48
*r, -
8=4
Ot*-na=-40
6.
0.Lx2
- 6.4:0
Solve the equation. Eound the solutions to the nearest hundredth.
T.
@
4xz
- 8:
8.
122
3xz+23=74
@
6*2-27=e
9. 2sc2+7=1,
12. 5(x * 812 : 15
la-4)2=7
1s. lC, *
4(x
*
9)2
= 24
14.
16. iA
-
4)2
= t6
@
13.
@
ex2
+ 3:4(3x2
-
20.
6)
7x2
- 43:34
7x2-34:?r2+16
(o#)':,u
@ro
21.
7)z
:s
=z(x2+t)
(tax2
-
8)2
= 8l
Solve the equation without graphing.
22. x2+6x*9=16
25. y2-28x*98=72
*
x2-4xr4:too
aa)
\,/
26. -3x2+6x-3:-27
x2-Lox*25=lzl
27.
i.*'*4x*8:8
2A. Phnt Food
A-manufacturer is making a cylindrical canister that will
hold granulated plant food. The manufacturer wants the canister to
have a volume of 2A36 cubic centimeters and be 18 centimeters tall.
What should the diameter of the canister be? (Hint: Use the formula
for volume, V = rr2h, where Iz is the volume, r is the radius, and & is
the height.) Round your answer to the nearest centimeter.
(g
o.
o
:
=o
o
a
:ro
18 cm
o
o
o,
J
G
ooo
!
o
a
o
()o
29.
Speed To estimate the speed s (in feet per second) of a car involved in an accident,
investigators use the formula
, : Yht
where
I represents the length (in feet)
of tire skid marks on the pavemelt. After an accident, an investigator measures skid
marks that are 180 feet long. Approximately how fast was the car traveling?
{&
Algebra
I
Chapter 10 Hesource Book
51