Which Nikes are better looking?

best women running shoes 2010 image

alwaysreme

1: http://cgi.ebay.com/NIB-160-Nike-Air-Max-2010-Womens-Running-Shoe-Sz-9-5-/360376280946?pt=US_Women_s_Shoes&hash=item53e819a772

2: http://cgi.ebay.com/WMNS-NIKE-AIR-MAX-2011-429890-160-SIZE-9-5-/330572829829?pt=US_Women_s_Shoes&hash=item4cf7ad1485

3: http://cgi.ebay.com/Womens-Nike-Air-Max-Pre-owned-9-5-Fits-like-9-/190548966243?pt=US_Women_s_Shoes&hash=item2c5d9a7b63

Do you like any of these? If not, which shoes would you recommend? Thanks:)

Answer
Last ones or first ones i <3 them both

I need someone to check my answers to make sure they are correct. My answers are in parenthesis.?

Demi

Please someone who knows their algebra check my answers.
1. The equation y=-1777x+27,153 can be used to predict the number y of gun deaths in the U.S. x years after 2000, that is x=0 corresponds to 2000, that is x=3, corresponds to 2003, x=5 corresponds to 2005, and so on.
Predict gun deaths in
2005 = ? (36038)
2008 = ? (41399)
The predicted number of gun deaths will be 9383 in the year ? =(1989).

2. The width of a rectangle is fixed at 17 cm. What lengths will make the perimeter greater than 86 cm?
The length must be greater than ? cm. (26 cm)

3. Graph the inequality on a plane. 5x+6y<=30. My points on my graph are(6,0)(0,5).

4. 8x-(5x+5)=13 The solution is x=? (x=6)

5. Solve the following system of equations. x+8y=9 equation one. Equation two; x=3-8y. What is the solution of the system? (solution is (3,5))

6. Solve by the subsitution method. 9x+4y=-11 & x=33-9y. The solution is ? (-3, 4)

7. Evaluate, z+y/9 for z=44 and y=10. (55/9)

8. Find the slope if it exists. x=-2. (The slope is undefined)

9. Use the intercepts to graph the equation. x+5y=10. (I graphed (10, 0)(0, 2))

10. Determine whether (-8, 1) is a solution of 3x+3y=0. (No)

11. Solve using the multiplication principle, -6x>1/13. ({x|x<-1/78})

12. Graph the equation. y=8. ((0,8) horizontal line)

13. 50% of what number is 15? (30)

14. Graph the system of inequalies. y>=-4; x>=5. (My graph shows (5, -4) colored to the right)

15. Solve -0.6x<-24. (Solution is {x|>40})

16. Solve using the addition & multiplacation principles. 1+7x<43. ({x|x<6})

17. On three consecutive passes, a football team gains 9 yds, loses 23 yds. & gains 50 yds. What # represents the total net yardage? Total yardage is ? (36 yds)

18. Use the distributive property to help you solve the equation. x(w-2) = -10 (w=0)

20. Decide whether the pair of lines is parallel, perpendicular, or neither. The lines are (parallel)

21. Solve 0.5x+9<=0.9x-8. (solution is {x|x>=42.5})

22. Solve using the multiplication principle. -1/2x=-9/10 (solution is x=9/5)

23. Find the domain of the function. g(x)=3/2-3x. ({x|x is a real number and x is not equal to 2/3})

25. Solve then graph, 6x>=10. Find solution and graph. (solution is {x|x>=5}) (graph is closed circle at 5 moving toward the left)

26. Determine if the graph is a function. (The graph is first line is (-5, 0) (-7, 2); second line (5, 0)(0, 5) my answer is yes)

27. Solve -8<=4x-3<=-2. (Solution is {x|-5/4<=x<=1/4})

28. Multiply (6/1)(3/4) (answer is 9/2)

29. Graph on a number line, where x is a real #. -1<x<=6. (graphed open circle moving toward 6 with a closed circle.)

30. Solve the system by graphing. Then classify the system as consistent or inconsistant & as dependent or independent. 8x-8y=-48; 8y-8x=48. (indefinate solutions; Consistant; independent)

31. solve using multiplication principle. 7x=-49 (solution is x=-7)

33. Use the intercepts to graph the equation. x+5y=10. (I graphed (10, 0)(0, 2))

34. Soybean meal is 16% protein; cornmeal is 8% protein. How many lbs of each should be mixed in order to get 320 lb mixture that is 14% protein? (Cornmeal = 80 lbs; Soybean = 240 lbs.)

35. Solve 5/4x+1/8x=5/8+x. (x= 5/3)

36. Graph the line containing the given pair and find the slope; (4, 1)(-4, -3). (m=1/2; graphed (4, 1)(-4, -3)).

37. The function H described by H(x)=2.75x+71 can be used to predict the height in cm of a womans whose humerus is x cm long. Predict the height of a woman whose humerus is 36 cm long. (170.48 cm)

38. Solve the compound inequality. 6>-2x+5 or 12<=-3x+5. ( (-infinity, -7/3] u (-1/2, infinity))

39. Amy paid $85.35 for a pair of running shoes during a 40% off sale. What was the regular price? ($85.75)

40. Translate to an algebraic expression. The product of 19% & some number. (translation is .10n)

41. Solve by elimination method. 2r-7s=4; 7r+2s=67. (there is no solution)

42. solve the graph. y-2>-17. (solution is {y|y>-15}; graphed from -15] toward the left on the line.)

43. Find the domain of the function; p(x)=x^2-2x+6. ({x|x is a real number})

44. In 1991, the life expectancy of males in a certain country was 61.2 yrs. In 1998 it was 63.5 yrs. Let E represent the life expectancy in yr t & let t represent the # of yrs since 1991. (The liner function E(t) that fits the data is E(t)=0.0t+61.2. Predict the life expectancy of males in 2004 is E(13)=65.1)

45. Media Services chg $40 for a phone & $30/month for its economy plan. The equation c=30t+40 describes the total cost c of operating a Media Services phone for t months.
(The total cost for 2 months os service is $100.)
If a customer has only $110 available, how many months of service can she receive? (2&1/3.)
(My graph build is y=cost, x=t is by yrs. (C=$40; T=1&1/3)

Answer
1. Predict gun deaths in
2005 = ? (36038) ---no: -1777(5) + 27,153 = -8885 + 27,153 = 18,268.
2008 = ? (41399) ---no: -1777(8) + 27,153 = -14,216 + 27,153 = 12,937.
The predicted number of gun deaths will be 9383 in the year ? =(1989).
---no.
9383 = -1777x + 27,153.
Subtract 27,153 from both sides, giving
-17,770 = -1777x.
Divide both sides by -1777, giving
x = 10 --> year = 2010.


#2, 4, 6, 8, 9, 10, 11, 12, 13, 15, 16, 17, 21, 22, 23, 27, 28, 30, 31, 32, 33, 34, 35, 36, 38, 43 are all correct.


3. ---correct: plot the points (6,0) and (0,5); draw a line through them; shade the half-plane below (and including) the line.


5. Solve the following system of equations. Equation one: x + 8y = 9. Equation two: x = 3 - 8y.
What is the solution of the system? (solution is (3,5))
---no.
Since x = 3 - 8y, substitute this in Equation one: x + 8y = 9 becomes (3 - 8y) + 8y = 9, which simplifies to 3 = 9. This is wrong, so the system has no solution.


7. Evaluate z + y/9 for z = 44 and y = 10. (55/9)
---no.
If this is (z+y)/9, it's (44+10)/9 = 54/9.
If this is z + (y/9), it's 44 + 10/9 = 396/9 + 10/9 = 406/9.


14. Graph the system of inequalities. y ⥠-4; x ⥠5. (My graph shows (5, -4) colored to the right)
---The graph includes the point (5,-4), the line y = -4 to the right of that, the line x = 5 above that, and the quarter-plane included between those lines (above and to the right of them).


18. Use the distributive property to help you solve the equation. x(w-2) = -10 (w=0)
---There is not enough information to solve it. There are two variables but only one equation.


20. Decide whether the pair of lines is parallel, perpendicular, or neither. The lines are (parallel)
---Lines are parallel if they have the same slope; perpendicular if their slopes are negative reciprocals (such as m and -1/m); neither, if neither of these conditions is met.


25. (solution is {x|x ⥠5}) (graph is closed circle at 5 moving toward the left)
---no.
Solve for x: 6x ⥠10 means x ⥠10/6, or x ⥠5/3. Solution: {x|x ⥠5/3}; closed circle at 5/3, moving toward the right.


26. ---correct; each of the two lines is a function.


29. ---correct: open circle at -1, moving to closed circle at 6.


37. The function H described by H(x) = 2.75x + 71 can be used to predict the height in cm of a woman whose humerus is x cm long. Predict the height of a woman whose humerus is 36 cm long. (170.48 cm)
---almost correct. 2.75(36) + 71 = 99 + 71 = 170.


39. Amy paid $85.35 for a pair of running shoes during a 40% off sale. What was the regular price? ($85.75)
---no.
40% off means that the new price is 60%, or 0.6, of the old price. If x = 0.6y, then y = x/0.6.
$85.35/0.6 = $142.25.


40. Translate to an algebraic expression. The product of 19% & some number. (translation is .10n)
---no. 19% = 0.19, so the product is 0.19n.


41. Solve by elimination method. 2r - 7s = 4; 7r + 2s = 67. (there is no solution)
---no.
Multiply the first equation by 7, giving
14r - 49s = 28.
Multiply the second equation by 2, giving
14r + 4s = 134.
Subtract:
14r - 49s = 28
-(14r + 4s = 134)
-------------------------
-53s = -106, so
s = 2.
Substitute this in one of the equations:
2r - 7(2) = 4, or
r = 9.


42. Solve the graph. y - 2 > -17. (solution is {y|y > -15}; graphed from -15] toward the left on the line.)
---almost. The graph goes rightward from an open circle at -15.


44. In 1991, the life expectancy of males in a certain country was 61.2 yrs. In 1998 it was 63.5 yrs. Let E represent the life expectancy in yr & let t represent the # of yrs since 1991. (The linear
function E(t) that fits the data is E(t) = 0.0t + 61.2. Predict the life expectancy of males in 2004 is E(13)=65.1)
---just about right, although the function should be E(t) = 0.32857t + 61.2.
With this, E(13) = 65.5 yr (65.47, rounded up).


45. ---correct, in an absolute sense; in practice, since the service is charged by whole months, she would be able to receive 2 whole months of service and have $10 left over.

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