Question 146874This question is from textbook Beginning Algebra
: This is a survey for school and I do not understand any of it any help would be appreciated... :)
1. Change to a decimal: 2.8%
2.8
28
0.028
280
2. 168 is what percent of 480?
29%
0.35%
2.9%
35%
3. 2x(3x - 4y) 3x(-3x + 4y)
-3x -20xy
15x -20xy
-3x +4xy
15x -4xy
4. 3
-9
9
-6
6
5. x+5 = (1/2) (x-4)
12
0
6
-14
6. 6x -3 +3x -6 = 5x -12 +3x +5
5
2
5/2
-20
7.
The perimeter of a triangle is 148cm. If the second side is the same length as the first and the third side is 16cm more than the first, find the three sides.
48, 48, 52cm
44, 44, 60cm
50, 50, 60cm
66, 66, 16cm
8.
Jean has $2.20 in change. She has three times as many dimes as quarters. How many of each does she have?
9 dimes, 3 quarters
4 quarters, 12 dimes
12 quarters, 4 dimes
2 quarters, 17 dimes
9. (3x -2y)
9x -12xy +4y
9x -4y
3x -2y
9x -6xy +4y
10. 4-
1/12
-12
1/64
64
11. x +14x +45
(x +2)(x +7)
(x-2)(x -7)
(x +5)(x +9)
(x -5)(x 9)
12. 6x +5x +7x
prime
(3x +1)(2x +1)
(2x +7)(3x +1)
x(6x +5x + 7)
13. 4x +14x -30
2(2x -3)(x +5)
2(2x -5)(x +3)
(4x -6)((x +5)
(2x -3)(2x +10)
14. 4x -8/(6x -12x)
(2x -2)/(3x -3x)
2/3
4/(6x)
2/(3x)
15. (3x -9)/(4x +20) . (x +3x -10)/(6x -12x)
3/4
(x -5)/(4(x +5))
(x -3)/(8x)
-3/8
16. (x -4x -5)/(x +2x +1) (x -5)/(x +4)
(x -5)/((x +1)(x +4))
5
(x +1)(x +4)/(x +1)
(x +4)/(x +1)
17. Find the slope of a line passing through (-4, 6) and (-2, 5)
-1/2
-2
1/2
1/6
18. Find the equation of the line passing through (2, 4) and (-3, 8)
4x +5y = 28
4x -5y = -12
5x +4y = 26
5x -4y = -6
19.
x +y = 2
3x -2y = 6
(1, 1)
(2,0)
Inconsistent
Dependent
20.
2x y = 8
x + 2y = 14
(6, 4)
(2, -4)
(0, 7)
(8, 3)
21.
x -2y = 12
x +3y = 2
(10, -1)
(0, -6)
(1, 1/3)
(8, -2)
22. 16x4y12
2xy
2xy
4xy6
4xy4
23. 2/�12
1/6
6 /6
12 /6
3 /3
24.
The hypotenuse of a right triangle is 10. One side is 2 less than the other. Find the length of each leg.
3, 5
5, 7
8, 6
4, 6
25. x +7x +10 = 0
5, 2
-5, 2
-5, -2
-2, 5
This question is from textbook Beginning Algebra
Answer by Fombitz(32388)   (Show Source):
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