Monday
April 21, 2014

Homework Help: algebra

Posted by whitney on Wednesday, September 8, 2010 at 9:22am.

sooo confusing... 6. ( + 7/8)(9/13)

A81/13
B17/104
C81/104
D17/29
E17/13
F17/25

7. [6(2+1) -6(1+1)] / [6(4-2) - 22 ]

A3/2
B3/4
C3/5
D3
E1/3
F2/3

8. -3(y 5) - (-2y + 1)

A-y +14
B5y - 4
C-5y + 14
D-13y
E-5y -6
F-y 4

For problems 9 15 let a = 2, b = -4, c = 7, and d = -3.

9. Evaluate (ac + b)/a

A3
B28
C-7
D5
E11
F7

10. Evaluate b3/a + c2

A55
B81
C-18
D17
E8
F-4

11. Evaluate bc/a2 + d

A4
B-28
C3
D25
E-10
F-7/2

12. Evaluate b a(cd + b) + a

A506
B2
C-44
D48
E-90
F52

13. Evaluate c + d[(ac + b)/(d-a)] + c

A-20
B36
C12
D52
E20
F-12

14. Evaluate (a + b)(c d)

A-20
B36
C-12
D20
E8
F-8

15. (b + d) (a c)

A-12
B-5
C2
D6
E5
F-2

16. The area of a rectangle may be determined by using the formula A = lw, where "A" stands for area, "l" stands for the length of the rectangle, and "w" stands for the width of the rectangle. If the length of the rectangle is 3 cm and the width of the rectangle is 5 cm, what is the area?

A2 square cm
B5/3 square cm
C8 square cm
D15 square cm
E16 square cm
F30 square cm

17. The perimeter of a rectangle may be determined by using the formula P = 2(l + w), where "P" stands for the perimeter, "l" stands for the length of the rectangle, and "w" stands for the width of the rectangle. What is the perimeter of a rectangle with the same dimensions as the rectangle in problem 16?

A15 cm
B12 cm
C11 cm
D13 cm
E16 cm
F30 cm

18. The surface area of a rectangular prism may be determined by using the formula S = 2(lw + lh + wh), where "S" stands for surface area, "l" stands for the length of the prism, w" stands for the width of the prism, and "h" stands for the height of the prism. If the length of the prism is 2 cm, the width is 4 cm, and the height is 5 cm, what is the surface area of the prism?

A76 square cm
B270 square cm
C140 square cm
D38 square cm
E200 square cm
F50 square cm

19. The area of a triangle may be determined by using the formula A = (1/2)bh, where "A" stands for area, "b" stands for the length of the base of the triangle, and "h" stands for the height of the triangle. If the base of the triangle measures 7 cm and the height of the triangle measures 4 cm, what is the area of the triangle?

A64 square cm
B14 square cm
C28 square cm
D6 square cm
E11/2 square cm
F56 square cm

20. The area of a trapezoid may be determined by using the formula A = (h/2)(a+b), where "A" stands for area, "h" stands for the height of the trapezoid, and "a" and "b" stand for the lengths of the bases of the trapezoid. If the height of the trapezoid is12 cm, a = 2 cm and b = 4 cm, what is the area of the trapezoid?

A16 square cm
B14 square cm
C24 square cm
D9 square cm
E72 square cm
F36 square cm

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