# SOLUTION: Hi, Can someone please review the following, I did the work I just want to make sure it correct before I submit it. Thank you for your help. From the given polynomials, id

Algebra ->  Algebra  -> Customizable Word Problem Solvers  -> Geometry -> SOLUTION: Hi, Can someone please review the following, I did the work I just want to make sure it correct before I submit it. Thank you for your help. From the given polynomials, id      Log On

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 Click here to see ALL problems on Geometry Word Problems Question 152354: Hi, Can someone please review the following, I did the work I just want to make sure it correct before I submit it. Thank you for your help. From the given polynomials, identify the polynomials of degree one. a. 311y - 5 - 43y Since degree is based on the power of the largest variable (or is degree 0 if everything is constants). You have an expression that contains y to a power of 1. So the degree is 1 b. (11y2)1/2 + 14 ( This is a degree 2) c. 10 + (19)1/2x (This is not a polynomial) d. 2 + 15x ( This is a degree 1 polynomial) e. 52y4 + 7x + 2 ( This is not a polynomial) f. (68)1y1 (This is a degree 1 polynomial) g. x3 + 3x – 9 ( This is a degree 3 ) h. (2x)1/2 + 4x – 8 (This is a degree 1) Solve the following: 1. -2x = 3x + 4 -2x = 3x + 4 5x=4 --------> -5*x/5 = 4/(-5) = -4 5 2. 3x/4 = 6 3x=6*4 , cross multiply: 3x=24 --------> 3*x= 24*8/3 eliminate 3 and 24 x=8 3. y/6 + 1 = 9 y/6 + 1 = 9 y+6/6=9, cross multiply, y+6=54 y=54-6 y= 48 6 = -2x/4 , cross multiply, 24= -2x -------> 24 * 12/-2 = -2*x/-2 eliminate like terms 24,-2,-2,-2 x= -12 4. 6 = -2x/4 6 = -2x/4 -2x=6*4 -2x=24 x=24/-2 Answer: x=-12 To proof it I did the following: 6=-2*-12/4 6=24/4 6=6 5. Find f(1) for f(x) = 4x3 - 3x2 - x + 2 The problem gives you a "function of x": f(x) = 4x3 - 3x2 - x + 2 . Now, to find f(1), it simply asks you to find the value of f(x) when x=1 . So I , simply substitute in 1 wherever I see the x and solve: f(x) = 4x^3 - 3x^2 - x + 2 Substituting I get: f(1) = 4(1)^3 - 3(1)^2 - 1 + 2 f(1) = 4(1) - 3(1) - 1 + 2 f(1) = 4 - 3 - 1 + 2 f(1) = 6 - 4 f(1) = 2 (so f(1)=2) Answer: f(1)=2 6. A function gives the value of C as 2 × (22/7) × r. Find C when r = 21 cm and r = 84 cm. plug in 21 for r: C = 2 × (22/7) × 21 Answer: C = 132 cm And plug in 84: C = 2 × (22/7) × 84 Answer: C = 528 cm Answer by Earlsdon(6294)   (Show Source): You can put this solution on YOUR website!All of your answers look good except for the first problem, part e. Given: ...You said "This is not a polynomial" Why is it not? It certainly qualifies as a polynomial (a trinomial in this case) because there are no terms with variables in the denominator and no terms with variables under a radical sign. This polynomial is of degree 4 because of the