# Posts by John

Total # Posts: 8,374

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...

chemisry
When alkali metals are heated with hydrogen they form what

Math
Length of a rectangle is 5 cm less than twice its width. The perimeter of the rectangle is 26 cm

Math
Sum of 2 consecutive integers is 59. Write an equation that models that situation and find values of both integers

Math
Solve for area of a trapezoid A= h(b1+b2) 2 Solve for b1

Math
Fahrenheit is -4 what is Celsius

Math
Solve formula for area of a trapezoid A= h(b1+b2) 2 Solve for b1

Math
Celsius to farenhet Find Celsius when it's -4 Fahrenheit

Math
Solve the formula for area of a trapezoid A= h(b1+b2) 2. Solve for b1

algebra
multiply and simplify 7^3 X 7^9

Astronomy
Final exam-find by yourself

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

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.

Math
state and prove the distributive property of rational numbers.

Combinatorics
I am not sure how to solve that?

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?

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...

us history
how could i get that many wrong. you need to double check.

us history
B C B D A B D B A A thanks,

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...

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!

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.

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

Geometry
Thanks so much!

Geometry
So, I am wondering if the statement is true or false.

Geometry
True or False: If x>4, then x>0 ? If false please explain.

stat
Mean

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 ...

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 ...

Algebra
I don't get what you mean Steve so that means that there are 50 positive integers where it equals 10?

Algebra
How many positive integers are there such that ⌊√x⌋=10? My answer was 11 but somehow that was wrong.

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

Physics
I am not sure how you are calculating this problem since you wrote it in abbreviations so could you please explain again?

Calculus
Thank You!

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 ...

A

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.

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.

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

Chemistry
Why does aniline turn brown upon standing? Does it also turn brown upon heating?

algebra
-22x + 11y +55z =

Math
Is this statement true? The least squares regression line is a unique line for each data set? I would say yes.

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?

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?

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 ...

Algebra

Algebra
Solve the formula for the variable S p = s/n

alegrebra
2/x - 4/x+2 - x/(x+2)^2

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

Verification of the amount is made daily by the auditor

physics
how did nikola tesla change the world? and why students do not know about him and his inventions?

math

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?

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)

Math
Rounding this comes out to the actual answer. How do I explain why?

physics
12

Logarithms
Thanks!

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)

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)

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?

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...

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...

computers
I need someone help me to modify PDF file by any program Photoshop...

algebra
R=ã(3V/ƒÎH) solve for V.

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

Algebra
simplify by removing parentheses and collecting like terms. 48q-22-( 7+37q )

Algebra
Use the distributive law to factor the following: Check by multiplying. 22x+11y+55z =

the square root of 20 minus the sqare root of 5 plus the square root of 45

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.

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?

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?

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?

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.

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.

math
write the following as decimals 6/15 4 3/8 6 4/11 10 3/4

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 ...

Algebra
-14-105=-119

Algebra
I need to simplify this: 2(-7) + 15(-7) =

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)

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=...

physics

us history
how do i make mine better though

us history
is this a good thesis statement for a paper i have to write about changes in the us from 1776 to 1870? "while we are still not a perfect country, political,social and economical changes are shaping up out country" is it ok or is there anything i can do to make it ...

u.s. history
how bout this one. while we are still not a perfect country, political,social and economical changes are shaping up out country

u.s. history
how can i make this one better?

u.s. history
is "positive changes that happened from 1776-1879 in American history" a good thesis?

u.s. history
ok im no good at thesis though but i will study up the site you showed me

u.s. history
well i was thinking about using some what along the lines of new inventions bring new era for the united state but my teacher said the paper has to be 5 paragraphs long with introduction 1st body(political changes)2nd body(economic changes,3rd body(social changes) and ...

u.s. history
i need a good thesis statement for a history paper i have to write. the topic is changes that took place in the U.S. from 1776-1870 im not good at thinking up thesis statements please help

Religion
Why does the Church encourage the faithful to read and study Scripture in light of the teachings of the Church?

COM 200 Quiz
HELLO!?!? ANYBODY THERE!?!?!?

COM 200 Quiz
I am checking to see if my answers are correct. If you see any that are wrong please let me know.

COM 200 Quiz
1. My boss, Josie, is a great supervisor because she listens to each employee’s concerns and ideas. Josie is an example of a: (Points : 1) *a) Social schema b) Stereotype c) Person Schema d) Prototype 2. Beth believes that she does a good job of presenting herself as a ...

math
how do you solve this 1/(1+ã2)+ã3/ã5

chemistry
1234

Quantum physics

math
An amusement park charges an admission fee of dollars per person. The cost, (in dollars), of admission for a group of people is given by the following function. What is the cost of admission for a group of people?

How are colloidal dispersions different from other types of dispersed systems?

parentheses
Add parentheses so that following equation is correct 7+9X3-1=25

Statistics
1. A pie chart can not be used for a frequency distribution with overlapping classes. A) True B) False True?

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