# Posts by John

Total # Posts: 8,337

**Statistics**

In probability and statistics, mean is used to refer to one measure of the central tendency either of a probability distribution or of the random variable characterized by that distribution. In statistics and probability theory, the standard deviation (represented by the Greek...

**math**

Yerp

**math**

Whoops, I meant 100/100 - 21/100 = 79/100 100/100 + 6/100 = 106/100 79/100 * 106/100 * 44 = ?

**math**

Do what you did on the previous problems :P 100/100 - 21/100 = 79/100 100/100 - 6/100 = 94/100 79/100 * 94/100 * 44 = ?

**Math**

Actually, that would be 1.23 x 10^-10. Move it over one more place. Count 11 places from 1.23. From 1.23 to 0.123 there is one jump.

**Math**

This means: how many times larger is a proton then an electron? Thus we put the proton on the numerator and the electron on the denominator. From pure chemical science, a proton is wayyy bigger (and heavier) than an electron. Thus, if you get an answer that is really small ...

**math**

Oh right, I'm sorry.

**math**

We need a 17% discount. We need a 5% discount as well. These discounts are on something valued at $89. If you have a 17% discount, it means you get 100/100 - 17/100 = 83/100 off the original price. In the same way, if you have a 5% discount, it means you have a 100/100 - 5/100...

**Physics**

What do you say?

**Science**

Similar results should be obtained when the experiment is repeated. Don't spam your posts repeatedly if possible, ok?

**Science**

Similar results should be obtained when the experiment is repeated.

**Health**

What she means is that how did your family affect your behavior? How did the internet affect your behavior? Or so I interpret. Etc. etc.

**math**

Ok, 5% = 5/100. Thus, 5% tax is equal to 0.05. The tax is equal to 0.05 * (the before tax cost = 40). Then, you add the price of the ticket back. You can take a shortcut by doing 100% + 5% = 105% * 40 = 1.05 * 40 = ?

**math**

Ms. Sue is totally correct. If you want to go a little bit simpler then: 25% off something is equal to 75/100 * (the price of the "something") because 25% = 25/100. But 25% means that you take that much off, so you need to minus 25/100 from the original percentage, ...

**Science**

Honestly, a google search will probably help you... but.... Chemical Composition Core is made of iron with minor amounts of nickel, and lies at the center of the earth Mantle is made of iron-magnesium silicates and surrounds the core. The mantle makes up the bulk of the earth...

**MATH**

Ummmmmmmm how am I supposed to know why don't you ask him ;) ? Just kidding, there is usually like 12 people on a bsaketball team and like 6 on a tennis team so probably he's not correct.

**Can someone check these answer for me?**

np :P

**Can someone check these answer for me?**

Question 5 is confusing...

**Can someone check these answer for me?**

Gymnosperms are a taxonomic class that includes plants whose seeds are not enclosed in an ovule (like a pine cone). Gymnosperm means as "naked seed". This group is often referred to as softwoods. Gymnosperms usually have needles that stay green throughout the year. ...

**Can someone check these answer for me?**

1,2,3 are wrong 4 is correct

**Can someone check these answer for me?**

Erm.... could you tell me what you think I am not going to just give you the answer to you.

**Can someone check these answer for me?**

Of course you know you could just do some research on the web and double check your answer by asking it here...

**Can someone check these answer for me?**

Number 1, a stamen is the male part producing pollen which animals pick up to deliver to the female part. Number 2, the pistil is the female part which produces seeds, so it needs to get the pollen from the male part Number 3, The 3 other answers don't make sense For ...

**Can someone check these answer for me?**

Or that's what I researched, Ms. Sue is probably right though.

**Can someone check these answer for me?**

1A 2D 3B 4C 5B

**Can someone check these answer for me?**

Um...which are the answers you chose?

**science plz help right now!!!!**

20 points o.O lol

**Math**

add em all up and divide by 29 29(1+29) / 2 = 435 435 / 29 =???

**math**

1/2 * 1/2 * 1/2 = 1/8

**Science**

Proteins are created by making a long chain of amino acids when ribosomes translate mRNA. In this process, tRNA brings in the single amino acids to the ribosome.

**Math**

20/x = 4/5 4x = 100 x = 25 Dunno why the info about monday is in there

**Kinesiology**

What are the ABCs that kinesiologists in sport and exercise psychology study?

**Trigonometry - find all x**

Thanks a lot for your answer sir!

**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?

**Solving inequanities**

9t + 4 - 4 > 32 + 4 9t > 36 9t/9 > 36/9 t > 4

**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 ...

**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 ...

**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.

**Math estimating quotients**

You are right. 18* 3 = 54. 17*3 = 51.

**Science**

and who cares if he is cheating, there is nothing you can do about it so GET OFF HIS ASS!!!

**Science**

ms. sue, shut up, not cheating, get a life! GOD!!

**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...

**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 ...

**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. &#...

**maths**

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

**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?

**earth science**

Hydrogen, it used to be purple.

**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.

**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

**algebra**

Determine the number and types of roots for each equation X(X+3)=2

**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

**English**

the freezing weather os threatening crops such as citrus fruits, which were sensitve to cold

**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?

**Math**

About 3.41 seconds.

**Biology of environment poster project**

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

**Math**

50x10=500

**maths help plz!**

can anyone tell me how you can find the angle of 6 different side of hexagon.

**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**

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

**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?