Mathematics - 17 August 2007

1.

5x2 + 4y2 - 20x +48y + 164 = 0
2.

y2 - 8y +1 = 0
3.

4x2 - y2 - 24x - 2y + 35 = 0

2007-08-17 08:19:39 · 4 answers · asked by Anonymous

Find the perimeter of a semi circle of diameter 10cm.

2007-08-17 08:17:54 · 12 answers · asked by Anonymous

I would really appreciate it.... if you would explain to me how to do this problem .....
Approximate 940 000 cm³ to the nearest cubic metre.
????????

Thankyou x

2007-08-17 08:12:36 · 8 answers · asked by Anonymous

When you graph a solution on a number line and the # is like 30 do you have to draw the number line with 0 in the middle because then the line would be big?
...-5 -4 -3 -2 -1 0 1 2 3 4 5
does 0 have to be in the middle or can it be like
... -5 -4 -3 -2-1 0
thx

2007-08-17 08:07:16 · 3 answers · asked by Anonymous

1. Solve by completing the square:
x^2 - 6x -3 = 0

2. Solve using the quadratic formula:
3x^2 - 2x + 1 = 0

2007-08-17 08:05:12 · 4 answers · asked by casper5 3

2007-08-17 08:01:44 · 5 answers · asked by Ash 1

In a cone with a slant height of 7.5 feet, the slant height forms a 38 degree angle with the radius. Find the surface area and volume of the cone.

2007-08-17 08:00:43 · 3 answers · asked by Anonymous

Find the volume of a sphere with radius 3 cm. Leave answers in terms of pi.

For an answer I got 113 cm. Do they want me to put a pi symbol after 113?

and for the hard question:

The volumes of two similar pyramids are 27 and 64. If the smaller has lateral area of 18, find the lateral area of the larger. (Hint: Apply thereom 12-11.)

HELP!!!

2007-08-17 07:41:25 · 2 answers · asked by acetone33432 1

1. z^2/8-7z/8=1

2. n^2/2-5n/6-2=0

3. x+1/2x=x-1/2x-1

4. 2/m^2+3m-4=2/3m+12-m/m-1

5. given a zero: x=2, of the polynomial: x^3-4x^2+21x-34=0, find the others.

2007-08-17 07:32:34 · 3 answers · asked by patrice cadet5 1

2007-08-17 07:27:17 · 5 answers · asked by Sajiah Z 1

2007-08-17 07:16:05 · 6 answers · asked by Scotty 3

2007-08-17 07:08:24 · 4 answers · asked by Lillian M 1

Can you simplify this problem for me please.

Va7 * b3 * c5

V= square root sign

* = multiplying sign

2007-08-17 07:07:40 · 3 answers · asked by Kwan L 2

2007-08-17 06:54:24 · 4 answers · asked by Lillian M 1

2007-08-17 06:50:04 · 9 answers · asked by Lillian M 1

landlord owes 6% to rent and want to calculate it myself and forget how to do that.

2007-08-17 06:44:18 · 9 answers · asked by 2hot2bamom 2

1) Solve

x^2+3x+2/x^2+5x+4 = 3/2

Where x not equal to -1 and x not equal to -4

2)

http://img411.imageshack.us/img411/2008/newbitmapimagews3.png

In the given figure AB=AC and angle ACD = 120
Find ‘angle’ A

3)
In the given figure AB=CF, EF=BD
‘angle’AFE = ‘angle’DBC
Prove that

‘triangle’AFE ‘Congruent to’ ‘triangle’CBD

http://img519.imageshack.us/img519/1885/newbitmapimage2pn0.png


4)
In the given figure X and Y are two points on equal sides AB and AC of ‘triangle’ABC such that AX=AY. Prove that XC=YB

http://img519.imageshack.us/img519/7133/newbitmapimageub1.png


5)
In the given figure ‘angle’A = ‘angle’C and AB=BC
Prove that ‘triangle’ABD ‘Congruent to’ ‘triangle’CBE


http://img293.imageshack.us/img293/6393/newbitmapimage2jz4.png


6)

In the given figure S is any point on the side QR of ‘triangle’PQR. Prove that PQ+QR+RP ’greater than’ 2PS

http://img339.imageshack.us/img339/9617/newbitmapimageoq2.png

2007-08-17 06:44:15 · 6 answers · asked by friend s 1

one - third of his rabbits were female. If x represents the original number of rabbits then,

1/2x - 2 = 1/3(x -2)

Solve this equation to find out what number of rabbits that he had before the sale?

2007-08-17 06:39:47 · 4 answers · asked by lala haha gaga mama 2

the equation is 48 divided by 3 x 2 - 2 x 3 = 2 and i need to know where the perenthisis go to make the answer true...help plx

2007-08-17 06:33:48 · 4 answers · asked by Anonymous

If 125 is appended to the right end of the number

5^(n-1) - 1
------------------ , the number 5^n is obtained . which of the
8
following is true of n ?

(a)n=4k , k belongs to N

(b)n=4k+2 , k belongs to N

(c)n belongs to N and n >2

(d)n=2k+1 , k belongs to N

2007-08-17 06:21:48 · 2 answers · asked by calculus 1

1)5 - 3(2x + 4) = 25

After distributing, How Should question should read

2) first step for this equation: -3(x - 4) = 2x + 10

3)3 - (x + 4) = 7

After distributing,What Should you get

4) Whats the next step to this equation 5 - 2(4 - x) = 17

5) The first step to solving this equation;
5 - 3(4x + 7) = 2(x + 5), is to...

2007-08-17 06:21:20 · 3 answers · asked by Patrice 1

2007-08-17 06:20:06 · 5 answers · asked by Jimbo C 2

2007-08-17 06:16:20 · 9 answers · asked by [JuMpEr] 3

2007-08-17 06:13:13 · 7 answers · asked by Virtuous Woman 1

I forgot how to do this type of question, and no longer have a high school textbook to look it up. The only thing I remember is CAST.

cos(116) = ?

please explain the process.

also how do i find co-terminal angles (in radians)? (add and subract 2pi)

2007-08-17 06:11:35 · 2 answers · asked by Anonymous

1.FIND THE NEXT TERM IN THE SEQUENCE

1/2 , -4, 32


2.What would the counterexample to the statement below.?


if the sum of two inegers is even, then both of the integers are even.

3. Identify the hypothesis and conclusion of the following statement:

If you get a's on all your geometry tests, then everyone will want to sit near you in class.

HYPOTHESIS:




CONCLUSION:

4. if the area of the parallelogram that has a height of 12 inches and a base of 28 inches?



5.IF one gallon of stain covers 350 square feet, what is the least number of gallons of stain you need to cover the floor of a rectangular deck that is 25 feet long and 16 feet wide?


6.draw and label: Lines 1 and m in place abc intersect at point C



7. Is the following statement true of false and why?

Three noncollinear points determine two lines.

8.what is the area of a rectangle that has a perimeter of 47mm and a length of 18.5mm?


9. vinyl flooring costs 25 dollars per square yard. How much will it cost to buy vinyl flooring for a kitchen that is 4.5 yards wide and 7.5 yards long?


10. give a number that is a counter example to the conjecture below. Explain your answer choice.

All numbers that end in digit 3 are prime.

11.what rule would you use to find the next term in the sequence below?
324, 108, 36, 12

12. draw and label a figure for the situation described below.

On line 1 ray ab and ray cd have no points in common.

13. how many different segments can be names in the figure below

<---------------X-----------------Y------------------Z------->

14.write the converse of the conditional statement below.
If its raining , then there are clouds in the sky.


15. Suppose you have 100 feet of fencing that you want to use to enclose the greatest possible retangular area of your backyard. First, draw three rectangels of different dimensions that each has a perimeter of 100 feet. Calculate the area of each of the three rectangles. After studying your three rectangles, decide what would be the greatest possible area that perimeter of 100 feet?

2007-08-17 05:45:53 · 6 answers · asked by simplybebop 1

ALso 48,400 vs 29,600? How do I figure this out? thanks

2007-08-17 05:39:18 · 8 answers · asked by Marla L. 1

2007-08-17 05:31:08 · 9 answers · asked by cool 1

Show that the ellipse 4x^2+9y^2=45 and the hyperbola x^2-4y^2=5 intersect at right angles.

2007-08-17 05:17:25 · 4 answers · asked by ori_culumn 1

2007-08-17 05:12:49 · 7 answers · asked by ? 2