Mathematics - 30 September 2007

2007-09-30 11:25:16 · 3 answers · asked by Anonymous

5-12(2-x)=6

3-7d=5d+4

5x-2(2-x)=9-(4x+2)

SHOW ALL WORK

2007-09-30 11:21:48 · 10 answers · asked by Indie 2

A child riding a bicycle at 15 meters per second decelerates at the rate of 3.0 meters per second squared for 4.0 seconds. What is the child's speed at the end of 4.0 seconds?

2007-09-30 11:14:34 · 2 answers · asked by xenycexgurlx 1

The Sine of -3x, Looks like this Sin(-3x). When I put it in my calculator, it gives me a reflection over the x axis. So does -sinx = Sin(-x) ???

2007-09-30 11:09:23 · 1 answers · asked by Anonymous

This is a data chart of a groups bridge-thickness

Bridge Thickness (layers)1 2 3 4 5 6
Breaking Weight(pennies)22 32 40 57 68 84

Predict the breaking weight of a bridge made from 14 layers. Show all work.

PLEASE HELP I CANT FIGURE IT OUT!

2007-09-30 11:07:37 · 3 answers · asked by Indie 2

How many sections make up the conics field of analytical geometry? Also, is locus geometry part of conics? If so, in what way?

2007-09-30 11:05:07 · 2 answers · asked by journey 1

2007-09-30 11:03:47 · 8 answers · asked by M2 1

Sara is building a triangular pen for her pet rabbit. If two of the sides measure 8 feet and 15 feet, the length of the third side could be

2007-09-30 11:03:16 · 2 answers · asked by Andreas 1

1) 16=d-12/14 p.s: / means divided by.

2007-09-30 10:58:53 · 6 answers · asked by aran_valla 2

What is 4 2/27 * 1000? :-) (That's times, not to the power of)

2007-09-30 10:57:10 · 4 answers · asked by Julie Albright 3

2007-09-30 10:56:15 · 2 answers · asked by Matty B 3

This is a data chart of a groups bridge-thickness

Bridge Thickness (layers) 1 2 3 4 5 6
Breaking Weight(pennies) 22 32 40 57 68 84

Predict the breaking weight of a bridge made from 14 layers. Show all work.

2007-09-30 10:53:32 · 3 answers · asked by Indie 2

to find the total surface area of a cylinder I would have to do this right.

Area of rectangle= 2 (pie r h) right?

2007-09-30 10:51:43 · 5 answers · asked by Anonymous

1) 7/8p - 4 = 10

7/8p - 4 + 4 = 10 + 4

7/8p =14

0.875p = 14

0.875p/0.875 = 14/0.875

p=16

did i do it right?

2007-09-30 10:39:36 · 4 answers · asked by aran_valla 2

A clock chimes once at 30 minutes past each hour and chimes on the hour according to the hour. For example at 1 PM there is one chimes and at noon and midnight there are 12 chimes. Starting at 11:15 AM on feb. 26th 2003, on what date will the 2003rd chime occur?

please show work/explain!

THANKS!

2007-09-30 10:36:46 · 4 answers · asked by ~USA~ 2

pls help meee!!!

i dont understand

thanx

2007-09-30 10:24:54 · 5 answers · asked by -x-lollie-x- 1

Use a repeating pattern to find the numeral that will be in the ones place of 2 to 387power. I'm totally lost. Can anyone help me?

2007-09-30 10:22:21 · 1 answers · asked by Anonymous

x2-8x+15
(x to the power of two)
i no its really basic but i have forgotten how to do it
can u please do it step by step
thankuX

2007-09-30 09:41:20 · 12 answers · asked by Anonymous

Find the missing leg of the right triangle if 10 is the other leg and 26 is the hypotenuse.

18

27.86

16

24

2007-09-30 09:40:10 · 2 answers · asked by Anonymous

find the equation of the tangent to y= 1-3x+12x^2-8x^3
parrarel to tangent (1,2)

2007-09-30 09:35:38 · 3 answers · asked by edik 4

A man 5 feet 9 inches (5.75 ft) tall casts a shadow 14 feet in length. A nearby building casts a shadow that is 50 feet. How tall is the building?

1.61 ft

20.5 ft

38 ft

121.7 ft

2007-09-30 09:22:32 · 5 answers · asked by Anonymous

Could someone please walk me through this?

2007-09-30 09:15:28 · 6 answers · asked by Anonymous

part I
limx--> 9

1/(x – 9) – 18/(x^2 – 81)

1________ 18
----------- – --------------------
x – 9 x * x – 81


(x – 9)(x + 9)

1_________ 18
----------- – --------------------
x – 9 (x – 9)(x + 9)

this is as far as i got, but i know the answer isn't 0, or undefined.

Part II

lim --> 9

1/x – 1/9
-----------
x-9

note: if someone has some kind of methodology with limits, that would help a lot more, i.e., break it down. thanx!

2007-09-30 09:15:28 · 1 answers · asked by Ar J 2

How do you translate things with fractions? For instance: 2/5w = 1/2w + 3?

2007-09-30 09:15:07 · 1 answers · asked by Anonymous

Allie's income is five-eighths that of Basil's. Allie's expenses are one half those of Basil's, and Allie saves 40 percent of her income. What percentage of his income does Basil save?

2007-09-30 09:11:50 · 3 answers · asked by 1234 1

Hey Everyone,

I'm having a bit of trouble with my maths homework. I've searched on google for help, but nothing seems to be working.
Its to do with significant figures, this is my last resort hehe.

If anyone would be so kind as to help, it would be much appreciated, thankyou.

84.239 (2 Significant Figures)
0.074576 (2 Significant Figures)
80.1578 (3 Significant Figures)

Thanks very much.
Kerrianne.

2007-09-30 09:08:33 · 6 answers · asked by Kerrianne 1

2007-09-30 09:07:49 · 10 answers · asked by Admiral 4

2007-09-30 09:06:21 · 4 answers · asked by Pep C 1

using substitution addition and subtraction
4x+3y= -2
3x+2y= -3

please help i just dont get it

2007-09-30 09:03:22 · 5 answers · asked by Anonymous

the cost of a lunch of 3 sandwiches, 7 cups of coffee, and 1 donut is $3.15. The cost of a lunch of 4 sandwiches, 10 cups of coffee, and 1 donut was $4.20 at the same cafe. How much will 1 sandwich, 1 cup of coffee, and 1 donut cost?

2007-09-30 08:56:41 · 3 answers · asked by 1234 1