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algebra
1)Find the 20th term of the arithmetic sequence in which a1=3 and d=7 a.143 b.136 c.140 d.133 an=a1+(n1)d a20=3+(201)7 a20=3+(19)7 a20=3+133 answer=b 2)Write an equation for the nth term of the arithmetic sequence 3,3,9,15...
asked by Marissa on August 26, 2007 
Math ( Can You check my Work?)
1.an = 3n  1 2. an = 2(2n  3) 3.an = 4^n 4.an = (2/3)^n 5. an = (1)^n(n + 5) 6. an = (1)^n + 1(n + 6) 7. an= n+3/2n1 8. a1 = 5 and an = an1  3 for n ≥ 2 9. a1 = 6 and an = 2an1 for n ≥ 2 10.a1 = 4 and an = 3an1 + 2
asked by Tony on August 1, 2012 
amth/algebra
can someone help me with simplification: ã20/5  1/ã5 my first answer is 1/ã5 my second answer is 10 ã5/5 but the answere I have to choose from are: (a) ã20  5ã5/ã5 (b) ã20  ã5/5 (c) cannot be
asked by dee on July 29, 2007 
MATH
simplify: ã5 PLUSã20 MINUSã27 PLUSã147
asked by Anonymous, on August 21, 2008 
math
Simplify: (a) 4ã7 (2ã3 +3ã6 ã7 ) (b) (3ã7 ã2 )squared (c) (16ã24)/(4ã96) (d) 7/(ã20 )  4/(ã12) (e) (3ã2)/(ã12)  (5ã3)/(ã8 )
asked by muma on November 10, 2011 
Math...help
remove the brackets and simplify questions a) 3(2a+5)+2(a+7) b) 5(b+4)+10b c) 4(2c+3)+3(c3) d) 8+6(d2) e) 6(5e+3)4(2e+3) f) 5(3f+2)(f5) MY ANSWERS a)6a+15+2a+14 8a+29 b)5b+20+10b 15b+20 c)8c+12+3c9 11c3 d)8+6d12 I need to
asked by Unknown on October 31, 2013 
algebra 2
1.Simplify the difference. n^2  lOn+24 9 / n^2  13n + 42 — 7 A. n13/n7
asked by Anonymous on July 28, 2012 
math
Please check my answers! Simplify the product. 7x(x+4) A. 7x^2+4 B. 7x^2+28x
asked by Sage on February 25, 2016 
Algebra (check my answers)
Please check these answers. Multiply 7(2a2 4) = 14a2 + 28 Multiply 0.5(a + b 5) = 0.5a + 0.5b  2.5 Factor bx  by + bz = b(x  y + z) Combine like terms (simplify) 12x + 4  11y  6x  9  y = 6x  12y  5 Evaluate the
asked by Sharon on November 8, 2011 
Algebra
1. Simplify the expression: 4√18+5√32 A.45√2 B.32√2 C.116√2 D.9√50 2. Simplify the expression: 7√53√80 A.5√5 B.4√75 C.5 D.4√75 3. Simplify the expression: √21(√3+√14) A.9√749√6 B.2√6+√35
asked by GummyBears16 on April 5, 2016