Mathematics - 20 June 2007

Write a linear equation to model the situation. You borrow $70 from
your brother. To repay the loan, you pay him $7 per week. Use w to
denote the number of weeks and y as the balance on the loan.

2007-06-20 08:24:23 · 5 answers · asked by Berry A 2

2007-06-20 08:18:33 · 8 answers · asked by Alexander 6

2007-06-20 08:10:56 · 3 answers · asked by froggy 1

f x gand f/g State any domain restricitions?
please help

2007-06-20 07:52:21 · 6 answers · asked by king 1

2007-06-20 07:50:31 · 8 answers · asked by Anonymous

2007-06-20 07:47:44 · 3 answers · asked by andypoo9898 2

help!


=)

2007-06-20 07:31:02 · 5 answers · asked by Anonymous

Can anyone prove this identity?

is this correct?

(cos^2x)(sec^2) = 1
1= 1

2007-06-20 07:29:20 · 7 answers · asked by Anonymous

In base 2, 100001 = 33, not prime
In base 3, 100001 = 244, not prime
In base 4, 100001 = 1025, not prime

...?

2007-06-20 07:22:58 · 2 answers · asked by Anonymous

i tried to work it out the way she taught us in class:
x=0.9999
10x=9.99999

10x=9.9999
-
x=0.99999
________________________
9x=9
x=9/9 <
i worked it out as 9 times 0.11111
to its 9*1/9 but i dont know if this is right

2007-06-20 07:18:10 · 20 answers · asked by DiamondKiss 2

2007-06-20 07:05:38 · 6 answers · asked by nimia 1

1. Let c = number of cassettes that Naomi has. In terms of c, how many cassettes does Sam have?

c + 19
c + 7

c + 5

2. In terms of c, how many cassettes do Sam and Naomi have together?

3c + 19
3c + 7

2c + 7

3. Choose an equation based on the information, in terms of c, for how many cassettes Sam and Naomi have together.

2c + 7 = 19
c = 19

c + 7 = 12

4. How many cassettes does Naomi have?

6
4

13

5. How many cassettes does Sam have?

6
4

13

6. Chris cycled four times as far as David did. If Chris traveled 96 km, how far did David travel? Choose the correct equation and distance.

4d = 96; 24km
3d = 96; 32km

4d = 80; 20km

7. A rectangular field has a perimeter of 350m. The width is 75m. What is the length of the field? Choose the correct equation and distance.

350L + 2(75) = 2; 100m
5L = 350; 70m

2L + 2(75) = 350; 100m

2007-06-20 07:05:13 · 1 answers · asked by stupid g 1

2007-06-20 07:04:18 · 11 answers · asked by Anonymous

1. A small company involved in a delivery business is in charge of two routes. A driver on route A travels 70 miles and a driver on route B travels 75 miles on a given day. The Driver on route A travels 5 mph slower than the driver on route B. Also the route A takes ½ an hour longer than B. How fast is each driver driving?

2. Two ferryboats leave opposite sides of a
lake at the same time. They pass each other when they are 800 meters from the nearest shore. When it reaches the oppostie side, each boat spends 30 minutes at the dock and then starts back. This time the boats pass each other when they are 400 meters from the nearest shore. Assuming that each of the boats travel at the same speed in both directions, how wide is the lake between the two ferry docks?

3. A train, an hour after starting, meets an accident which detains it one hour, after which it proceeds at 3/5 of its former rate and arrives 3 hours late. But, had an accident which happened 80 KM farther, it would have been 1.5 hours late only. Find the original rate of the train and the length of the journey.

2007-06-20 06:57:34 · 5 answers · asked by Anthony W 2

2007-06-20 06:47:46 · 7 answers · asked by victoriaabshire 1

Could someone tell me the formula for finding the orthocentre and circumcentre with coordinate geometry?

I need it DESPERATELY! I was supposed to find it from some resource and cant find it ANYWHERE!!!!!

2007-06-20 06:38:23 · 1 answers · asked by girishloveslife 1

Someone gave this to me as a response to an earlier questiuon but i need the steps he took broken down a little but more.

interpolate and extrapolate.

at 10,000,000 revolutions, (interpolate)
[(80-85)/(21939300-6271600)]=
[(x-85)/(10,000,000-6271600)]
-5/15667700 = (x-85)/3728400
x-85 = -1.189836415
x = 83.81016359

at 100,000,000 revolutions, (extrapolate)
[70-75)/(87358800-62070100)]=
[(x-70)/(100,000,000-87358800)
-5/25288700 = (x-70)/12641200
x-70 = -2.499377192
x = 67.50062281

2007-06-20 06:32:35 · 1 answers · asked by Spencer D 3

[2(x – 1) + 3(x – 1)]
------------------------ (division line)
(x – 1)

2007-06-20 06:19:16 · 6 answers · asked by Anonymous

I had this question on a test. I got 360 what did you get?

2007-06-20 06:17:50 · 10 answers · asked by Choosing Life For Me ~ Experiencing A Break Over~ 2

I know it's simple, but I have been at this too long and cannot think.

Write an algebraic expression to answer the question:

How many hours are there in 'd' days?

2007-06-20 05:52:33 · 10 answers · asked by Theresa L 1

I want to know what X is equal to because i think to Find Y, X must Equal Zero and Vice Versa, But im not sure , PLZ Help

2007-06-20 05:36:42 · 6 answers · asked by bob J67 1

2007-06-20 05:17:28 · 12 answers · asked by delightfulldee71 1

A boat takes 6 hrs to travel 16 km upstream and 24 km downstream, and it takes 13hrs to travel 36km upstream and 48km downstream. find the speed of the boat in still water and the speed of the stream.

2007-06-20 05:12:55 · 4 answers · asked by athalenandita 1

2007-06-20 04:59:11 · 11 answers · asked by Lorna a garcia y nacion y abiada 1

2007-06-20 04:55:36 · 6 answers · asked by Lorna a garcia y nacion y abiada 1

19. (37 * 83) + (37 * 17)

3600
3700

370

20. 16*(17/8)

34
36

38

21. (0.25)(38) + (0.75)(38)

3.8
380

38

22. 12n + 27n

30n
40n

39n

23. 5x + 7 + 8x - 3

13x + 4
12x - 4

13x + 10

24. 3(x + 2) + 5(x - 3) - 7x + 4

2x - 5
x - 5

2x - 4

25. (-7)(-3)

-21
21

12

26. (5)(-3)

-15
15

5

27. (-4)(6)

24
12

-24

28. (-3x)(-2y)

5xy
-6xy

6xy

29. (-3)(5)(2)

-13
30

-30

30. (-1)(3)(-5)(6)

-90
48

90

31. 2(x - 3y) - 3(x - 2y)

0y - x
-x

x - y

32. (-1/2)n + (3/5)m + (5/2)n - (8/5)m

2n - m
n - 2m

2n + m

33. If n is an odd integer, find the next even integer.

n
n + 1

n + 2

34. If n is an odd integer, find the next two consecutive odd integers.

n + 2, n + 4
n + 1, n + 3

n, n + 2

Part 3
Multiple Choice: Choose the equation that matches the written expression. (Each question is worth 1 point)

35. The sum of two consecutive integers is 15.

n + n = 15
2n + 2 = 15

n + (n + 1) = 15

36. The product of two consecutive integers is 6.

n(n) = 6
2n + n = 6

n(n+1) = 6

37. The sum of three consecutive integers is 27.

3n + 6 = 27
n + (n + 1) + (n + 2) = 27

n + n + n = 27

38. The sum of three consecutive even integers is 12

n + (n + 2) + (n + 4) = 12
3n + 4 = 12

n + 6 = 12

39. The sum of two consecutive even integers is 2 more than twice the smaller integer.

n + (n + 2) - 2 = n
n + (n + 2) + 2 = 2n

n + (n + 2) = 2 + 2n

40. The sum of the least and greatest of three consecutive odd integers is -32

n + (n + 4) = -32
n + (n + 2) = 32

n + (n + 32) = 2

2007-06-20 04:45:20 · 6 answers · asked by Anonymous

what are twin prime numbers ?

can you please provide me an example

thanks

is it same as co-prime ? ex: 5,6 are co-prime as they dont have any common factor except 1 ...does twin prime ==co-prime ?

2007-06-20 04:43:26 · 5 answers · asked by sanko 1

need help with math essay

2007-06-20 04:42:22 · 3 answers · asked by Anonymous

i can't figure out this problem, some help would be nice.

solve for x:

5/8(x+4)
------------ = -2/5
-3

2007-06-20 04:34:49 · 14 answers · asked by cheerup_emokid_x3 3

Solve log2(x) = 3.87

A 12.543
B 16.342
C 17.426
D 14.621
E 18.527
F 21.234

2007-06-20 04:01:48 · 3 answers · asked by Nathan C 1