Mathematics - 24 June 2007

USE SUBSTITUTION TO SOLVE EACH SYSTEM OF EQUATIONS. CHECK SOULTION?
SUMMER HELP PLEASE

2007-06-24 15:12:12 · 4 answers · asked by king 1

Tides go up and down in a 14.8-hour period. The average depth of a certain river is 7 m and ranges from 3 to 11 m. The variation can be approximated by a sine curve. Write an equation that gives the approximate variation y, if x is the number of hours after midnight and high tide occurs at 8:00 a.m.

2007-06-24 15:08:24 · 1 answers · asked by Anonymous

z^2 y^4 / 3z^3 y

2007-06-24 14:55:49 · 3 answers · asked by Anonymous

2007-06-24 14:48:33 · 6 answers · asked by daneris f 1

2007-06-24 14:32:07 · 8 answers · asked by Math Whiz 1

2007-06-24 14:26:50 · 6 answers · asked by Anonymous

Find s_6, the sixth term in the series which corresponds to the geometric sequence which has a=8 and r=1/2

2007-06-24 14:20:14 · 4 answers · asked by Dani A 2

2007-06-24 14:19:08 · 4 answers · asked by Sean B 1

and with a range of motion of 225 degrees Over what area will the sensor detect motion and become illuminated?

2007-06-24 14:10:48 · 3 answers · asked by Sean B 1

Find the latitude of Spokane, WA if Spokane and Jordan Valley,43.15 Degrees North OR, are 486km apart

2007-06-24 14:03:49 · 2 answers · asked by Sean B 1

2007-06-24 13:55:27 · 4 answers · asked by pemd70 1

2007-06-24 13:49:09 · 13 answers · asked by whybeaverage1 1

horizontal. Give your answers in exact form - do not give decimal approximations off of the calculator.

2007-06-24 13:46:29 · 1 answers · asked by Nick S 2

2007-06-24 13:42:16 · 5 answers · asked by Anonymous

I have an exam next week and have no idea how to answer questions like this, though I've been told that there is one on the exam ... it says:

Richard has $10,000. He invested part of it in a term deposit paying 4% per annum, and the remainder in bonds paying 5% per annum. If the total interest after one year is $440, how much did he invest at each rate?

I know the answer is $6,000 at 4% and $4,000 at 5%, but could someone explain to me how to figure out how to do these questions? I would really appreciate it, I have no idea how to label them so I can solve it ... thanks! :)

2007-06-24 13:37:25 · 6 answers · asked by Anonymous

Judith Thompson, the student cafeteria manager, has decided to keep pizza as a permanent menu item after 3 successful months. She has entered discussions with the local pizza supplier to obtain a quantity discount. Currently, each pizza costs $4.75; however, if Judith purchases at least 225 pizzas at a time, their cost is $4.25 each. How much money can Judith save by ordering 225 pizzas at a time?
(a) 258.48 (b) 260 (c) 223.48 (d) Judith will not save any money (e) none of the above
I'm not sure my answer is (e)

2007-06-24 13:16:45 · 6 answers · asked by jennifer 1

√-x + 52 = 8
12
-8
-12

2: √25 - 3x -6 = 1
-8
-4
6

3: √-2x + 64 = 6
12
14
22

4: √-4x + 41 + 23 = 28
4
12
16

5: √-x + 7 - 15 = -11
-18
-12
-9

6: √139 + 3x + 10 = 21
8
6
-6

7: √91 + 2x = 9
5
-5
-8

8: √172 + 4x = 12
-7
-5
-2

9: √-4x - 8 = 2
-5
-3
5

10: √104 - 2x - 16 = -6
-4
-2
2

11: √3x + 6 = 3
1
-1
-3

12: √-x - 9 + 24 = 26
-14
-13
-12

13: √-2x + 47 = 5
11
13
15

14: √-x + 21 + 8 = 14
-25
-20
-15

15: √4x - 31 - 20 = -17
5
10
12

16: √-3x + 4 = 7
-15
-10
2

17: √-4x + 156 + 11 = 23
-9
-7
3

18: √2x = √x + 5
3
5
8

19: √x + √3 = √x + 9
3
5
7

20: 3√x = √4x + 5
-6
-5
1

2007-06-24 13:06:38 · 3 answers · asked by Anonymous

. (Human cannonball) In the 1940s, the human cannonball stunt was performed regularly by Emmanuel Zacchini for The Ringling Brothers and Barnum & Bailey Circus. The tip of the cannon rose 15 feet off the ground, and the total horizontal distance traveled was 175 feet. When the cannon is aimed at an angle of 45 degrees, an equation of the parabolic flight (see the picture) has the form y = ax^2 + x + c

2007-06-24 12:49:01 · 5 answers · asked by Sensei f 1

solve and graph the solution set

2007-06-24 12:41:08 · 5 answers · asked by LASHANDA F 1

2007-06-24 12:38:57 · 12 answers · asked by jessica 1

Please explain how to do this:

Name the smallest counting number by which to multiply the first number so that the product is a multiple of the second number.

Example: 2 x 3 x 5; 2 x 3 (squared) x 7

Solution: What factors of the second number are not factors of the first number? 3 and 7. Therefore, 3 x 7, or 21.

2007-06-24 12:29:58 · 4 answers · asked by babilv 2

show how you found the answer. thanks

2007-06-24 12:28:01 · 5 answers · asked by Anonymous

2.) find probablity for the experiment of tossing a six- sided die twice.
-the sum is at least 7.
answer i got was 7/36 & im not sure of this tho.

2.) One hundred college students were interviewed to determine their political party affiliations and whether they favored a balanced- budget amendment to the constitution.

23 democrats & 32 republicans favors the amendment
25 democrats & 9 republicans do not favor the amendment
7 democrats & 4 republicans are unsure.
democrats=55
republicans=45
*A person is selected at a random from the sample. Find the probablity that the described person is selected.
a.) a person who doesn't favor the amendment.
b.) a republican
c.) a democrat who favors the amendment

2007-06-24 12:24:00 · 3 answers · asked by limebacardi 1

Math summer project plz show how u found the answer. thanks

2007-06-24 12:17:18 · 9 answers · asked by Anonymous

2007-06-24 12:07:53 · 6 answers · asked by Anonymous

2007-06-24 12:04:39 · 3 answers · asked by Anonymous

Simplify inside the parentheses first, then multiply.

(1 - 1 / x + 3) (1 - 1 / x + 2) (8 - 8 / x + 1)

2007-06-24 12:02:08 · 4 answers · asked by Anonymous

2007-06-24 11:42:19 · 9 answers · asked by 23344 2

9x^2+30x= -16 by factoring

2007-06-24 11:40:26 · 8 answers · asked by funkenstien 2

1- the height of a triangle is 18 inches. find the length of the base if the area of the triangle is 63?
2-Find the circumference and area of a circle with diameter 6 inches. use 3.14 for n.
3-If two angles of a triangle measure 40 degrees and 70 degrees, what is the measure of the third.
4-Find the perimeter and area of a square with 12ft side.
5-Find the area of a triangle with base 13ft and height 6 ft.

2007-06-24 11:29:39 · 2 answers · asked by Anonymous