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Download e-book for kindle: Communications in Algebra, volume 26, number 4 by Taft E.J. (ed.)

Communications in Algebra provides the reader entry to the competitively speedy e-book of vital articles of well timed and enduring curiosity that experience made this magazine the superior overseas discussion board for the alternate of keystone algebraic rules. moreover, all parts of algebraic study are coated, together with classical quantity thought.

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3 c. 3 d. 9 242. What is the slope of the line whose equation is y = –3? a. –3 b. 0 c. 3 d. There is no slope. 243. What is the y-intercept of the line whose equa- tion is 8y = 16x – 4? a. b. c. d. 1 (0,–ᎏ2ᎏ) (0,2) (0,8) (0,16) –LINEAR EQUATIONS AND INEQUALITIES– 244. Which of the following lines contains the point (3,1)? a. y = 2x + 1 b. y = 2x + 2 intercept form. a. y = 3x + 5 b. y = –3x + 5 1 2 c. x = ᎏ3ᎏy + 5 2 ᎏᎏx 3 d. x = –ᎏ3ᎏy + 5 c. y = ᎏ3ᎏx – 2 d. y = 247. Transform the equation 3x + y = 5 into slope- –1 e.

X : x Ͻ 5} b. {x : x Ͼ 5} c. {x : x Ͻ 7} d. {x : x Ͼ 7} 198. What is the solution set for –8x + 11 Ͻ 83? a. b. c. d. {x : x Ͼ –9} {x : x Ͻ –9} {x : x Ͼ 9} {x : x Ͻ 9} 199. What is the solution set for –4(x –1) Յ 2(x + 1)? 1 a. {x : x Ն –ᎏ3ᎏ} 1 b. {x : x Յ –ᎏ3ᎏ} 200. What is the solution set for x + 5 Ն 3x + 9? a. b. c. d. 7 {x : x Ն ᎏ2ᎏ} {x : x Ն –2} {x : x Յ –2} {x : x Յ 2} 201. What is the solution set for –6(x + 1) Ն 60? a. b. c. d. {x : x Ն –9} {x : x Յ –9} {x : x Ն –11} {x : x Յ –11} 202.

T = ᎏnRᎏ b. PVnR = T c. PVR ᎏᎏ n =T 1 d. T = ᎏPVᎏ ϫ nR 1 ᎏᎏx – 4 2 ᎏ 3 x+8 = ᎏ5ᎏ ? a. –8 b. 8 c. –88 d. 88 182. Solve the following equation for A: C+A ᎏ B=ᎏ D–A BD – C ᎏ a. A = ᎏ 1+B D–C ᎏ b. A = ᎏ 1+B B–C 178. What value of x satisfies the equation 5x – 2[x – 3(7 – x)] = 3 – 2(x – 8) ? a. 23 b. –23 c. d. 23 ᎏᎏ 5 –23 ᎏᎏ 5 179. Assuming that a b, solve the following equation for x: ax + b = cx + d a. b. c. d. d+b ᎏᎏ a+c d–b ᎏᎏ c–a b–d ᎏᎏ a–c d–b ᎏᎏ a–c ᎏ c. A = ᎏ C+B B+D ᎏ d. A = ᎏ C+B 183. If 30% of r is equal to 75% of s, what is 50% of s if r = 30?