Thursday

September 18, 2014

September 18, 2014

Total # Posts: 6,240

**Trigonometry - find all x**

Thanks a lot for your answer sir!
*October 17, 2013*

**Trigonometry - find all x**

Find all x such that 0 <= x <= pi/2 and sin^7 x + cos^7 x = 1. (Be sure to show that no other values of x satisfy the equation.) Well, I know sin^2 x + cos^2 x = 1, and that kind of looks like sin^7 x + cos^7 x = 1. I'm unsure on how to proceed. Help?
*October 17, 2013*

**Solving inequanities**

9t + 4 - 4 > 32 + 4 9t > 36 9t/9 > 36/9 t > 4
*October 17, 2013*

**Science**

For every trait we have--eye color, skin color and so on--there is a gene or group of genes that controls the trait by producing first the message and then the protein. Sperm cells and eggs cells are specialized to carry DNA in such a way that, at fertilization, a new ...
*October 17, 2013*

**Trigonometry - Proof**

Prove that cot x + tan x = csc x * sec x whenever both sides are defined. I tried rewriting all sides in terms of sin x but it got all complicated and I can't make head or tail of it. Could someone assist me? Is it all just a pound-out algebra problem in essence? How do ...
*October 16, 2013*

**math**

And what, Taylor, would that be? Just a hint, the percent for a tax / room rate is less than 100....so your answer is inaccurate.
*October 16, 2013*

**Math estimating quotients**

You are right. 18* 3 = 54. 17*3 = 51.
*October 16, 2013*

**Fat gram calculator**

Design a program that asks the user for the number of fat grams and calories in a food item. Validate the input as follows. Make sure the number of fat grams and calories are not less than 0. According to nutritional formulas, the number of calories cannot exceed fat grams * 9...
*October 13, 2013*

**English**

Using these words animosity, effervescent, solicitude anonymity, nonchalant and nepotism, where would the go in these sentences? Would it be animosity, effervescent, anonymity, solicitude, then nepotism?? A. After losing the to Henery, Gary cited _______ as the reason for his ...
*October 13, 2013*

**Genetics**

The following is pulse-chase experiment was performed as in Okazaki’s experiment, but in an organism as follows (all other as in regular replication): • One linear chromosome • 2 origins of replication spaced 50Kb apart, one firing at t=0 and one in t=10 min. &#...
*October 11, 2013*

**maths**

When a die is thrown,what is the probability that the number is greater than 1,given that it is odd?
*October 10, 2013*

**Physics**

In uniform circular motion, which of the following quantities are constant: speed, instantaneous velocity, tangential velocity, radial acceleration, tangential acceleration? Which of these quantities are zero throughout the motion?
*October 8, 2013*

**earth science**

Hydrogen, it used to be purple.
*October 8, 2013*

**earth science**

The amount of radioactivity halves every so many years, so ifyou know how much should have been it, there is a simple equation to firgure it out.
*October 8, 2013*

**algebra**

Determine the number and type of roots for each equation. thanks inadvance can u please show mw step by step thanks 2X(X+2)=-2
*October 7, 2013*

**algebra**

Determine the number and types of roots for each equation X(X+3)=2
*October 7, 2013*

**chemistry **

Volume (mL) of 2.15 M potassium hydroxide that contains 8.09 g of solute WebAssign will check your answer for the correct number of significant figures. mL
*October 6, 2013*

**Physics**

A tennis player hits a ball 2.0 m above the ground. The ball leaves his racquet with a speed of 15.0m/s at an angle 5.3∘ above the horizontal. The horizontal distance to the net is 7.0 m, and the net is 1.0 m high. How much did it clear the net by?
*October 4, 2013*

**Math**

About 3.41 seconds.
*October 4, 2013*

**Biology of environment poster project**

How about you do your own work and leave this site for people who really need help, Mohammad.
*October 4, 2013*

**maths help plz!**

can anyone tell me how you can find the angle of 6 different side of hexagon.
*October 3, 2013*

**physics **

Find x-component of vector d=(110m , 46 degrees below + x-axis). Find y-component of vector d=(110m ,46 degrees below + x-axis). Find x-component of vector v=(350m/s , 28degrees above + x-axis). Find y-component of vector v=(350 , 28 above + x-axis). Find x-component of vector...
*October 2, 2013*

**chemisry**

When alkali metals are heated with hydrogen they form what
*October 2, 2013*

**Math**

Length of a rectangle is 5 cm less than twice its width. The perimeter of the rectangle is 26 cm
*October 1, 2013*

**Math**

Sum of 2 consecutive integers is 59. Write an equation that models that situation and find values of both integers
*October 1, 2013*

**Math**

Solve for area of a trapezoid A= h(b1+b2) 2 Solve for b1
*October 1, 2013*

**Math**

Fahrenheit is -4 what is Celsius
*October 1, 2013*

**Math**

Solve formula for area of a trapezoid A= h(b1+b2) 2 Solve for b1
*October 1, 2013*

**Math**

Celsius to farenhet Find Celsius when it's -4 Fahrenheit
*October 1, 2013*

**Math**

Solve the formula for area of a trapezoid A= h(b1+b2) 2. Solve for b1
*October 1, 2013*

**algebra**

multiply and simplify 7^3 X 7^9
*October 1, 2013*

**Astronomy**

Final exam-find by yourself
*October 1, 2013*

**algebra**

Given the peoblem (-3)2 x ( -3 )4 which is the correct answer (-3)6 or (9)6 ? Explain how you got the answer
*September 30, 2013*

**Math**

Prove that (xt+yr)/yt is already in lowest terms, b and d have no common prime factor. Note that x/y and r/t are fractions in reduced terms.
*September 29, 2013*

**Math**

state and prove the distributive property of rational numbers.
*September 29, 2013*

**Combinatorics**

I am not sure how to solve that?
*September 29, 2013*

**Combinatorics**

Calvin has 3 red juggling pins, 4 blue juggling pins, 5 white juggling pins, and 6 green juggling pins. How many ways can he give a set of 3 juggling pins to Dan?
*September 29, 2013*

**us history**

What were religious groups who came to the New World looking for? a. Religious freedom for all religious groups. b. Equality for all. c. To avoid religious and civil persecution. d. To expand their religion throughout the colonies. A For what reason did the colonists feel that...
*September 28, 2013*

**us history**

how could i get that many wrong. you need to double check.
*September 28, 2013*

**us history**

B C B D A B D B A A thanks,
*September 28, 2013*

**us history**

Why were the British more successful than the Spanish in colonizing North America? Select one: a. They found more gold. b. They had a stronger military. c. They attracted more immigrants. d. They bonded with Native American populations. On the heels of repealing the Stamp Act...
*September 28, 2013*

**math/chem**

If aluminum foil has a density of 2.70 g/ml, then how thick would be a 2.22 g sample of foilif it measures 5.0 cm on each side. PLEASE SHOW WORK THX!
*September 27, 2013*

**algebra**

Following the guideline of the food and drug administration. Dale tries to eat at least 5 servings of fruit each day.For the first six days of one week, she had 5,5,3,4,and 5 servings. How many servings of fruit should Dale eat on saturday to average at least 5 servings per day.
*September 27, 2013*

**algebra**

Miranda's financial aid stipulates that her tuition not exceed $1200. If college charges a $45 registration fee plus $475 per course, what is the greatest number of courses for which Miranda can register. Miranda can register for at the most ???? courses
*September 27, 2013*

**Geometry**

Thanks so much!
*September 26, 2013*

**Geometry**

So, I am wondering if the statement is true or false.
*September 26, 2013*

**Geometry**

True or False: If x>4, then x>0 ? If false please explain.
*September 26, 2013*

**stat**

Mean
*September 26, 2013*

**Combinatorics**

Bernie's Breakfast Buffet has a wide selection of breakfast food available. They have 4 types of cereal, 5 types of fruit, and 6 styles of cooked eggs. How many different ways can someone choose a breakfast consisting of one type of cereal, one piece of fruit, and one ...
*September 26, 2013*

**Combinatorics**

Bernie's Breakfast Buffet has a wide selection of breakfast food available. They have 4 types of cereal, 5 types of fruit, and 6 styles of cooked eggs. How many different ways can someone choose a breakfast consisting of one type of cereal, one piece of fruit, and one ...
*September 26, 2013*

**Algebra**

I don't get what you mean Steve so that means that there are 50 positive integers where it equals 10?
*September 26, 2013*

**Algebra**

How many positive integers are there such that ⌊√x⌋=10? My answer was 11 but somehow that was wrong.
*September 26, 2013*

**Algebra**

f:R→R is a function satisfying f(2x+1)=4x^2+4x. So what is the value of f(12)?
*September 26, 2013*

**Physics**

I am not sure how you are calculating this problem since you wrote it in abbreviations so could you please explain again?
*September 25, 2013*

**Calculus**

Thank You!
*September 24, 2013*

**Calculus**

How do I find the critical values? y= 4/x + tan(πx/8) What I did is I simplified it to y= 4x^-1 + tan(πx/8) then I took the derivative y'= -4x^-2 + (π/8)(sec(πx/8))^2 Then I simplied it y'= -4/x^2 + (π/8)(sec(πx/8))^2 then I found a ...
*September 24, 2013*

**A**

Please help me graph the equation: 1.y=4x+6 2.y=x+8 3.Use the intercepts to graph the equation. 3x+5y=15
*September 23, 2013*

**algebra**

The perimeter of a collrge athletic field is 104 meters and the length is 18m more than the width.Find the length and width.
*September 23, 2013*

**Chemistry**

Which of the following metals or nonmetals are expected to displace Mn or Cl (respectively) from MnCl2? 1. Ca should displace Mn. 2. Br should displace Cl. 3. Cu should displace Mn. 4. I should displace Cl.
*September 22, 2013*

**physics**

The half-life of a certain radioactive isotope is 32 hours.What fraction of the sample would remain after 16 hours?(a)0.50(b)0.25(c)0.62(d)0.71
*September 22, 2013*

**Chemistry**

Why does aniline turn brown upon standing? Does it also turn brown upon heating?
*September 22, 2013*

**algebra**

-22x + 11y +55z =
*September 21, 2013*

**Math**

Is this statement true? The least squares regression line is a unique line for each data set? I would say yes.
*September 21, 2013*

**algebra**

Thank for the answer to the problem: the perimeter of a basketball court is 108 meters and length is 6 mters longer than twice the width. You gave me the width, but not the length. What is the length?
*September 21, 2013*

**Algebra**

The perimeter of a basketball court is 108 meters and the length is 6 meters longer than twice the width. what are the length and the width?
*September 21, 2013*

**Chemistry**

A sample of 2.08 grams of Z is dissolved into 500 grams of water which is in a styrofoam coﬀee cup. The temperature is monitored and is found to rise from 25.682◦C to 25.899◦C. What is ∆Hsolution for substance Z? Assume no heat is lost/gained by the ...
*September 21, 2013*

**Algebra**

Please solve for M28 A=nm2
*September 20, 2013*

**Algebra**

Solve the formula for the variable S p = s/n
*September 20, 2013*

**alegrebra**

2/x - 4/x+2 - x/(x+2)^2
*September 20, 2013*

**BBA Business communiction**

Using Proper Idiom: 1.The purchasing officer has gone in search for a substituteproduct. 2.Our office has become independent fromthe Dallas office. 3.We have been in search for a qualified supervisor since August
*September 20, 2013*

**BBA Business communiction**

Verification of the amount is made daily by the auditor
*September 20, 2013*

**physics**

how did nikola tesla change the world? and why students do not know about him and his inventions?
*September 18, 2013*

**math**

Give answer to 40+40x0+1
*September 18, 2013*

**physics**

A person takes a trip, driving with a constant speed of 90 km/h except for a rest stop for 30min. If his average speed is 78 km/h, how much time is spent on the trip and how far does the person travel?
*September 18, 2013*

**Logarithms**

What's the fastest way to find Anti Logarithms(not using interpolation or a log table) can anyone give me an example using any kind of value? (preferably solving triangles)
*September 17, 2013*

**Logarithms**

Thanks!
*September 17, 2013*

**Logarithms**

What's the fastest way to find Anti Logarithms(not using interpolation or a log table) can anyone give me an example using any kind of value? (preferably solving triangles)
*September 17, 2013*

**Logarithms**

What's the fastest way to find Anti Logarithms(not using interpolation or a log table) can anyone give me an example using any kind of value? (preferably solving triangles)
*September 17, 2013*

**Logarithms**

But how can you do the inverse? such as Log cot B 0.1690 = what angle? should find the cot first then the log?
*September 17, 2013*

**Logarithms**

What's the best way to find Angles using logarithms and vice-versa. Ex: log cot 0.1690 and log sin (25degrees 22min) log sin (25+22/60) = log sin 22.3666666667 = sin 0.38053243281 = (-0.41960832236) Is there a simpler way to do these? I get confused with finding the angles...
*September 17, 2013*

**physics**

Coasting due east on your bicycle at 8.0 m/s, you encounter a sandy patch of road 7.4 m across. When you leave the sandy patch your speed has been reduced to 5.5 m/s. Assuming the bicycle slows with constant acceleration, what was its acceleration in the sandy patch? Give both...
*September 16, 2013*

**computers**

I need someone help me to modify PDF file by any program Photoshop...
*September 16, 2013*

**algebra**

R=ã(3V/ƒÎH) solve for V.
*September 15, 2013*

**physics**

A battery of emf and negligible internal resistance is connected to two resistances R1 and R2 in series. What is the potential difference across R2?(a)E(R1+R2)/R2(b)E(R1+R2)/R1(c)ER2/R1+R2(d)ER1/R1+R2
*September 15, 2013*

**Algebra**

simplify by removing parentheses and collecting like terms. 48q-22-( 7+37q )
*September 15, 2013*

**Algebra**

Use the distributive law to factor the following: Check by multiplying. 22x+11y+55z =
*September 15, 2013*

**math plzzzzzzzzzzzzzzzz help!!!!!!!!!!!!!!!!!!**

I have a value of 90000 is what she has on the paper. I was thinking it was a typo, so I decided to do more research.
*September 12, 2013*

**math plzzzzzzzzzzzzzzzz help!!!!!!!!!!!!!!!!!!**

i am a six digit number less than 300,000. i have the same digit in my greatest and least place value. i am an even number. i have value of 90,000. the rest of my digits represent the smallest whole number. what number am I?
*September 12, 2013*

**math**

i am a six digit number less than 300,000. i have the same digit in my greatest and least place value. i am an even number. i have value of 90,000. the rest of my digits represent the smallest whole number. what number am I?
*September 12, 2013*

**Physics**

A person jumps straight up. Do they spend more time in air while in the top half or bottom half of the total height? What is the ratio of the two times?
*September 11, 2013*

**Physics**

A ball is thrown straight up, when it reaches the maximum height x, a second identical ball is thrown up with the same initial velocity as the first one. Where will these balls meet.
*September 11, 2013*

**Physics**

A ball is thrown straight up, when it reaches the maximum height x, a second identical ball is thrown up with the same initial velocity as the first one. Where will these balls meet.
*September 11, 2013*

**math**

write the following as decimals 6/15 4 3/8 6 4/11 10 3/4
*September 11, 2013*

**college physics1**

Well, assuming the gravity still has a value, named "g" (although the building is infinitely tall and then its value should be zero), the velocity should be, v=-gt take t=2, and you have, v=-2g If you assume g=9.8 m/s^2, then, v=-19.6 m/s. But remember that ...
*September 10, 2013*

**Algebra**

-14-105=-119
*September 10, 2013*

**Algebra**

I need to simplify this: 2(-7) + 15(-7) =
*September 10, 2013*

**Chemistry**

The reaction is NO+1/2O2 ----> NO2 Then the moles of O2 needed are, n=2.2*1/2=1.1 mol O2 So the mass is M=1.1*32=35.2 grams (Molar mass of O2 is 32 g/mol). The moles of NO2 produced are, n=2.2 mol And the mass, M=2.2*46=101.2 g (Molar mass of NO2 is 46 g/mol)
*September 10, 2013*

**math**

A perfect square is, (a+b)^2=a^2+b^2+2ab So you have to adapt the equation given to this expression. The term with x should be of the form 2ab, but a=sqrt(2)x, so b=5/(2*sqrt(2)), then 2x^2-5x-12=(sqrt(2)*x)^2+sqrt(2)*x*5/(2*sqrt(2))+25/8-25/8-12=0 (sqrt(2)x+5/(2sqrt(2)))^2=...
*September 10, 2013*

**physics**

please answer this question
*September 9, 2013*

**us history**

how do i make mine better though
*September 9, 2013*

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