Friday
July 25, 2014

Posts by erick


Total # Posts: 80

math
Hi, there is a problem on my math book that has been giving me headaches. That's why I'm looking for help. The problem is: Given z and w, two complex numbers such as |z+w|=|z-w|, prove that Arg z - arg w = plusminus (pi/2)

algebra 2
Solve system of equations.Describe each step if your solution. W+X+Y+Z=2 2W-X+2y-Z=1 -W+2x-y+2z=-2 3w+x+y-Z=5 Please help I only know how to do this with 3 equations.

Math
I don't know

physics
Stil wl b veloct of me nd -9.8m/s^2 for force of gravity

chemistry
name of the following compound: ch2-ch3 / ch3-ch2-ch-ch2-ch2-ch=ch-ch3

Physics
A horizontal spring is lying on a frictionless surface. One end of the spring is attaches to a wall while the other end is connected to a movable object. The spring and object are compressed by 0.076 m, released from rest, and subsequently oscillate back and forth with an angu...

Visual Basic (Computer Programming)
ALGORITHM EXERCISES 1. Wilma Peterson is paid by the hour. She would like a program that both calculates and displays her weekly gross pay. For this exercise, you do not need to worry about overtime pay, as Wilma never works more than 40 hours in a week. Desk-check your soluti...

Trigonometry
IM STUCK ON THESE :( 1. What is the equation for shifting the standard sine curve +2 units horizontally? A. y = sin (x + 2) B. y = sin x + 2 C. y = sin x − 2 D. y = sin (x − 2) 3. What is tan-¹ √3/3 ? A. π/4 B. -π/3 C. π/6 D. -π/4 4. ...

Trigonometry
QUESTIONS IM STUCK ON 6. Change -4√2 - 4√2 to trigonometric form A. 32 cis 135° B. 8 cis 225° C. 8 cis 45° D. 32 cis 45° 7. Simplify (2 cis 100°)7. A. 2 cis 700° B. 128 cis 280° C. 128 cis 340° D. 2 cis 340° 9. Simplify 12(cos52&...

Trigonometry
thank you so much, i just missed a lot of school in the past month and im trying to catch up

Algeba II
3x^2+4x^2-7x+2

Trigonometry
1. What is the area of triangle ABC if a = 47.0°, β = 57.8°, and a = 10.2 cm? A. 58.2 cm2 <----------- B. 43.5 cm2 C. 38.4 cm2 D. 33.3 cm2 2. Given triangle ABC with β = 41°, g = 14°, and a = 5.0, find the value of c. A. 6.2 B. 4.0 C. 1.5 <-----...

Trigonometry
2. Choose the point that lies on the curve r = 2 – 3 sin θ. A. (-5, 3π/2) <---------- B. (–2, π) C. (1, π/2) D. (5, π/2 3. Which of the following is not an approximate solution of x5 – 1 = 0? A. 0.3090 – 0.9511i B. 0.8090 + 0.587...

Trigonometry
2. Choose the point that lies on the curve r = 2 – 3 sin θ. A. (-5, 3π/2) B. (–2, π) C. (1, π/2) D. (5, π/2 3. Which of the following is not an approximate solution of x5 – 1 = 0? A. 0.3090 – 0.9511i B. 0.8090 + 0.5878i C. 0.3090 + ...

Trigonometry
1. What is the area of triangle ABC if a = 47.0°, β = 57.8°, and a = 10.2 cm? A. 58.2 cm2 B. 43.5 cm2 C. 38.4 cm2 D. 33.3 cm2 2. Given triangle ABC with β = 41°, g = 14°, and a = 5.0, find the value of c. A. 6.2 B. 4.0 C. 1.5 D. 17 3. Resolve the vect...

trigonometry
1. What is the area of triangle ABC if a = 47.0°, β = 57.8°, and a = 10.2 cm? A. 58.2 cm2 B. 43.5 cm2 C. 38.4 cm2 D. 33.3 cm2 2. Given triangle ABC with β = 41°, g = 14°, and a = 5.0, find the value of c. A. 6.2 B. 4.0 C. 1.5 D. 17 3. Resolve the vect...

trigonometry
2. Choose the point that lies on the curve r = 2 – 3 sin θ. A. (-5, 3π/2) B. (–2, π) C. (1, π/2) D. (5, π/2 3. Which of the following is not an approximate solution of x5 – 1 = 0? A. 0.3090 – 0.9511i B. 0.8090 + 0.5878i C. 0.3090 + ...

trigonometry
2. Choose the point that lies on the curve r = 2 – 3 sin θ. A. (-5, 3π/2) B. (–2, π) C. (1, π/2) D. (5, π/2 3. Which of the following is not an approximate solution of x5 – 1 = 0? A. 0.3090 – 0.9511i B. 0.8090 + 0.5878i C. 0.3090 + ...

Math
can you please do them all? pleaseeeeeee

Math
1. What is the area of triangle ABC if a = 47.0°, β = 57.8°, and a = 10.2 cm? A. 58.2 cm2 B. 43.5 cm2 C. 38.4 cm2 D. 33.3 cm2 2. Given triangle ABC with β = 41°, g = 14°, and a = 5.0, find the value of c. A. 6.2 B. 4.0 C. 1.5 D. 17 3. Resolve the vect...

math
the scle drawing of a close is 3 inches wide by 4.2 inches long. the original closet is 10 feet wide. how long is the original closet in feet? how long is the original closet in yards?

elementary
5

statistics
A student is taking a multiple choice test where each question have 5 possible answers of which only one is right. If the student knows the answer the student answers correctly, otherwise there is a 20% probability of correct answer. Assume the student knows 70% of the questio...

Physics
A 1.2 kg block is attached to a horizontal 23 N/m spring and resting on a frictionless horizontal surface. The block is set oscillating with amplitude 10 cm and phase constant – π/2. A 2nd block with mass 0.8 kg moving at 1.7 m/s collides inelastically (the blocks st...

Chemistry
What is the Net Ionic Reaction for NaOH(aq) + H2SO4(aq)-->

spanish
mi madastra

spanish
need to unscramble these letters amiaramtdrs

density acrostic poem
ugiyftudutf

math
rectangle

math
a container has volume 1m cubed the lenght of the container is 200cm. list all the possible dimensions of the container. each dimension is whole number of cm.

Physical science
It corect

Math
what is the fractoin of four and four tenths

physycs
A hockey player skates down the ice at an angle of 34° to a line crossing the width of the rink. If he skates 14 m, how far has he travelled down the length of the ice toward the goal?

Math
what is the fraction of four and five tenths

6th grade
who ordered the great sphinx to be built

US GOVERMENT
When was the colony establised in America this is ref to Delaware.

US GOVERMENT
REF TO DELAWARE, WHO WAS FOUNDER OF THE COLONY

SOCIAL STUDIES
who ordered the great sphinx to be built

SOCIAL STUDIES
WHAT DOES REGION PHYSICAL MEANS?

SOCIAL STUDIES
WHAT DOES REGION PHYSICAL MEANS?

science
How do scientists often name ecosystems

5th grade science
How could you change an object's volume without changing it's mass?

social studies
This region of the U.S. is the largest in area?

social studies
What region produces more corn?

social studies
Big Ben national park is in what region?

social studies
Baton Rouge and New Orleans are in what region?

social studies
Some of countrys highest mountains are in what region?

social studies
The nations largest city, N.Y. City is located in this region?

social studies
The Grand Canyon is in what region?

5th grade
This region is divided into 2 smaller regions-New England and the Mid atlantic states?

Physics
You have entered a contest in which the contestants drop a marble with mass 27.0g from the roof of a building onto a small target 23.0m below.From uncertainty considerations, what is the typical distance by which you will miss the target, given that you aim with the highest po...

math
what is the inverse of g(x)= 2/3x+4?

finance
Find the price of a bond with a face value of $12,500 that pays an annual coupon of $750 for a period of 11 years. The discount rate is 8% pa. Give your answer in dollars and cents to the nearest cent.

accounting
P13-4A The following financial information is for Inca Company. INCA COMPANY Balance Sheets December 31 Assets 2007 2006 Cash $ 70,000 $ 65,000 Short-term investments 55,000 40,000 Receivables 104,000 90,000 Inventories 230,000 125,000 Prepaid expenses 25,000 23,000 Land 130,0...

economics
Thank you

economics
When I click on the link where exactly do I go?

economics
What firm dominates the U.S. beer industry? What demand and supply factors have contributed to "fewness" in this industry?

economics
Yes I do

economics
Nothing really

economics
Help me answer the question is full detail if possible

economics
Why is there so much advertising in monopolistic competition and oligopoly? How does such advertising help consumers and promote efficiency? Why might it be excessive at times?

econimics
I do not understand much that's why I have come this site

econimics
Can you assist me in answering this question if possible

econimics
Why might price collusion occur in oligopolistic industries? Assess the economic desirability of collusive pricing. What the main obstacles to collusion? Speculate as to why price leadership is legal in the United States, whereas price fixing is not.

econmics
That's how the question is written in the textbook

econmics
Why do oligarchy exist? List five or six oligopolists whose products you own or regularly purchase. What distinguishes oilgopoly from monopolistic competition?

economics
How does monopolistic competition differ from pure competition in its basic characteristics? From pure monopoly? Explain fully what product differentiation may involve. Explain how the entry of firms into its industry affects the demand curve facing a monopolistic competitor a...

espaƱol
el guion teatral para que sirve

sicence
how are chemicals and physicals weathering affect

Algebra 1
-3y+4=8y-4+6y

ENGLISH
these are idioms explain what each means 1.burnign the candle on both ends. 2.by the skin of your teeth also this metaphor..exlain 1.perception is reality

english
these are idioms i need to know what they are explain 1.Burning the candle on both ends. 2.by the skin of your teeth

english
ok thank you

english
these are similies i need to know what they mean...explain 1.as blind as a bat 2.as common as dirt

english
wut's a goon to a goblin??

Geometry
If I know the number of sides of a regular polynomial(10), how do I find the exterior and interior angles?

Geometry
How do I find the number of sides a regular polygon has if I only know te measure of the exterior angle, such as 40 degrees?

COMMUNITCATION
EXAMPLES OF A COMPOSED POSITIVE MESSAGE

physics
cyndi used 1/4 because of this: KErotational=1/2IW^2 =1/2(1/2mr^2)(V/r)^2 =1/2(1/2mr^2)(V^2/r^2) =1/4mV^2 as you can see the radii cancel and the 1/2's multiply together to make 1/4

Science
What steps do you think can be taken to reduce the harmful effects of human activities on biogeochemical cycles? Which businesses would these changes impact the most?

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