Mathematics - 12 June 2007

2007-06-12 23:47:59 · 9 answers · asked by bipinbihari78 1

The cost of producing a doll is $1.20 per doll plus fixed costs of $12.50.

a) Write a formular for the cost of producing d dolls.
b) If the cost was $38.90, how many dolls were produced?

THANKYOU!

2007-06-12 23:35:30 · 11 answers · asked by Anonymous

need reply as soon as possible...

2007-06-12 22:42:02 · 3 answers · asked by reddish 3

I have this doubt: by definition, absolute value of a reall number is the numerical value of the real number without regard to its sign. But is it really possible to deal with a quantity which has no sign? It seems to me that although the definition says abs(x)=()|x|, with no sign attached, we actually treat it as if it is +|x|. Otherwise how do people plot a function like y(x)=|x|? this plot is entirely on the positive side of Y-axis, which means we actually take |x|=+|x|. So I think the definition usually given for absolute function is not very accurate. A real number or quantity is either positive or negative. Please tell me what you think about this.

2007-06-12 22:39:37 · 14 answers · asked by Roy 2

Write an equation in point-slope form of a line that has a slope of 1.5 and passes through the point (16,-5)

2007-06-12 22:28:30 · 6 answers · asked by Anonymous

2007-06-12 22:10:55 · 9 answers · asked by freeflavor1 1

dT/dt = -(5"pi"/12) cos ("pi" t/12)

"pi" = that pie sign

2007-06-12 22:09:47 · 1 answers · asked by Anonymous

answer this coz its our trivia...pls..

2007-06-12 21:58:06 · 9 answers · asked by jellytamarra 1

integers?

2007-06-12 21:39:20 · 10 answers · asked by Dave 4

2007-06-12 21:23:32 · 7 answers · asked by kel82012001 1

X is to Y as Y is to Z. The value of Y is 14 and the value of Z is 280. What is the value of x?

2007-06-12 21:18:55 · 11 answers · asked by I'm so freakin' gay 1

On average there are 2.2 planes arriving at a local airport in an hour daily.

1.What is the probability that there are 3 planes arriving at the airport in an hour?

2.What is the probability that there are at least 2 planes arriving at the airport in a two-hour?

3.What is the standard deviation for the number of planed arriving at the airport in a 10 hour period?

2007-06-12 21:05:30 · 2 answers · asked by Sky C 1

2007-06-12 20:55:16 · 5 answers · asked by SUYASH 2

I need help with this question. anyone? plz. first correct answer gets ten points. and plz explain..clearly..thanx..
(a) express the complex numbers 1+ i and 1-i in the form r(cos Θ + sin Θ) where r is the modulus and Θ the argument of the complex number. Find the modulus and argument of (1+i)^2 / (1-i)^2.

(b) Given that z1 = 2 + i and z2 =-2 +4i, find, in the form a+bi,the complex number z such that 1/z=1/z1+1/z2.
find the modulus and argument of z, giving your answer for arg z in the range -π < arg z< π , corrext to 3 decimal places.

2007-06-12 20:05:59 · 5 answers · asked by Anonymous

If you know what Im talking about, then please explain what it is? thanks.

2007-06-12 19:58:49 · 9 answers · asked by ovesuvius 1

Im really bad at everything to do with surface area, could someone please explain this question to me? :)

six cubes each have a surface area of 24cm²
they are joined together to make a cuboid
what could the surface area of this cuboid be
there are two different answers

thanks!

2007-06-12 19:19:08 · 8 answers · asked by pip m 1

A man does a piece of work in 5 days but with the help of his son he completes the work in 3 days how long will the son take to complete it?

2007-06-12 19:18:41 · 4 answers · asked by Max 1

I want to write out some math equations in both Excel and Word, but I can't figure out an easy way to do it. Is there some free software out there that will help me? I know there's some Office Add-on that does it, but I can't find it on my installation disk. Are there any others? Something versatile and easy to use. Please help!

2007-06-12 19:14:26 · 7 answers · asked by Anonymous

20 passengers are in a sinking ship. Ten are mathematicians. They all stand in a ring. Every 7th passenger climbs into the life boat which can hold 10 people. At what position should the mathematicians be standing in the ring so as to board the life boat?

2007-06-12 19:13:09 · 6 answers · asked by Max 1

2007-06-12 19:03:59 · 2 answers · asked by super sonic* 3

1) complete this sentence ........ two trianglesare congruent is ............ ( what does congruent mean ) ?
2) a teacher had 110 easter eggs to give to her students. after giving 4 eggs to each, she only had 2 left. how many kids where in the class ?
thanks

2007-06-12 19:02:29 · 6 answers · asked by jess y 4

show that maximum possible square cut from a circle is where the diagonal of square is the diameter of circle. Even show that the maximum possible circle from a square is where the diameter of circle is equal to side of square????

2007-06-12 18:53:34 · 6 answers · asked by smart 1

2007-06-12 18:52:53 · 1 answers · asked by Julie 1

2007-06-12 18:49:22 · 14 answers · asked by Mark 1

how do i prove garfields proof? need help ASAP!

2007-06-12 18:46:09 · 2 answers · asked by caliangel 2

find three consecutive even integers such that 6 times the sum of the first and the third is 8 less than 14 times the second. i found the correct answer which is 6, but what formula do i plug that into to find the other two numbers? the book has the answers of 2,4,6

2007-06-12 18:20:27 · 7 answers · asked by Ellen H 1

2007-06-12 18:11:28 · 8 answers · asked by Anonymous

The rectangular part of a field is 110 yards long, and the diameter of each semicircle is 42 yards. Find the cost of fertilizing the field at $0.70 per square yard.

2007-06-12 18:10:30 · 4 answers · asked by vanessandavid 1

82. 2 times a number, increased by 28, is less than or equal to 6 times that number.
Match each inequality on the right with a statement on the left.

2007-06-12 18:07:15 · 5 answers · asked by Anonymous

74. 7(x - 3) > 5x - 14

2007-06-12 18:05:58 · 4 answers · asked by Anonymous