Test 4 , Units 3.1 - 4.15 Flashcards
___g = 1 kg
1000
___ cm = 1 m
100
___ mm = 1 dm
100
___ mi. = 5 km
1 mi = .62 km
.62 x 5 = 3.1
___ lb. = 500 kg
1 lb = 2.2 kg
2.2 x 500 = 1100
___ m = 19 yd.
1 m = .91 yd
.91 x 19 = 17.29 = 17.3
freezing point of water - F
32 F
freezing point of water - Celsius
0 C
boiling point of water - F
212 F
boiling point of water - Celsius
100 C
___ C = 55 F
C = 5/9(F - 32)
C = 5/9(55 - 32)
C = 5/9(23)
C = 115/9
C = 12.7
C = 13
___ F = 25C
F = 9/5C + 32
F = 9/5(25) + 32
F = 45 + 32
F = 77
___C = 99F
C = 5/9(F - 32)
C = 5/9(99 - 32)
C = 5/9(67)
C = 335/9
C = 37.2 = 37
what is the numerical coefficient of 3axy
3
write the number of terms in a trinomial
3
write six less than x as an algebraic expression
x - 6
solve 32 (2 + 5) - 6
9 (7) - 6
63 - 6
57
identify as like or unlike terms: 4x2y ; 4xy2
unlike
write the exponent in 53
3
solve 50
1
solve y1
y
if a = 5, b = 4, c = 2
abc2
5 * 4 * 22
20 * 4
80
if a = 5, b = 4, c = 2
b(a + c)
4(5 + 2)
4 (7)
28
if a = 5, b = 4, c = 2
ac2 - b/2
5(22) - 4/2
5(4) - 2
20 - 2
18
3m + 6m + 2m
11m
12x2 + 3xy - x2 + y2
11x2 + 3xy + y2
9n + 4n + n
14n
(2x)(x2)
2x3
(4x2)(2x)(3xy)
24x4y
(m2)(m4)(m)
m7
x4 / x3
x
12a2bc / 4abc
3a
20mn2 / 5m2n2
4/m
x + 2 = 9
x + 2 - 2 = 9 - 2
x = 7
3x = 18
x = 6
1/2x = 7
2 * 1/2x = 7 * 2
x = 14
4x + 3 = 2x + 9
4x - 2x + 3 = 2x - 2x + 9
2x + 3 - 3 = 9 - 3
2x/2 = 6/2
x = 3
.5x = 10
5x = 100
x = 20
2/3x = 6
3/2 * 2/3x = 6 * 3/2
x = 18/2
x = 9
2 * 2 * a * a * b * b
4a2b2
5xxxyyyy
5x3y4
8 * 8 * 8 * m * m * n
512m2n
Cara traveled at the average rate of 52 mph on her trip. How many kilometers per hour was she traveling? Find the answer to the nearest whole kilometer.
1 mi. = 1.61 km
1.61 x 52 = 83.72 = 84
Cara filled up her car with 15 gallons of gas. How many liters did she buy? (convert 15 gal. to qt. first.)
15 gal x 4 = 60 qt.
1 qt. = .95 liters
.95 x 60 = 57
The temperature when she arrived was 68 F. What was the temp on the Celsius scale?
C = 5/9 (F - 32)
C = 5/9 (68 - 32)
C = 5/9 ( 36)
C = 5 ( 4)
C = 20
