Friday

October 28, 2016
Total # Posts: 91

**Chemistry**

How many moles of ions are in 1.0 mol NH4Cl?

*October 12, 2016*

**Physics**

Bobpursley is a genius

*July 27, 2016*

**Science**

it's still no where near

*July 27, 2016*

**Science**

I am accounting those too and it still doesn't add up to it.

*July 27, 2016*

**Science**

Let say the humans started populating six million years ago, how come there is only over 7 billion people? I mean if you calculate the population today should be in 100 trillions

*July 27, 2016*

**Science**

So nothing is accurate? But estimated

*July 27, 2016*

**Science**

I just want to know when did humans start populating?

*July 27, 2016*

**Science**

So six million years ago?

*July 27, 2016*

**Science**

Thanks and What did humans evolve from?

*July 27, 2016*

**Science**

When did the first human exist? And when did they start populating the earth?

*July 27, 2016*

**science**

is it true that the theory of evolution collapsed on itself and that's why scientists don't believe in it?

*July 7, 2016*

**math**

The perimeter of the fence is 70feet and the width is 16feet.What is the length of the fence.

*May 9, 2016*

**Biology**

What is the effect of of adding more sugar to a solution? What will happen to its consistency?

*April 3, 2016*

**Math**

find the equation of a parabola that has a vertex of (-2,-3) and contains the point (4,1).

*March 28, 2016*

**math**

thank you so much...you have really helped me today...i have a test tomorrow and i think ill do much better than i wouldve without your help

*February 28, 2016*

**math**

sorry, but one more question... there are a couple questions that say something like write the equation 2x+3y-5=0 in normal form... but isnt it already in normal form?

*February 28, 2016*

**math**

solve 2sinx+√3<0 for 0<x<2π

*February 28, 2016*

**math**

solve 2cos^2x-5cosx+2=0 for principal values of x I don't understand this question...what are principal values?

*February 28, 2016*

**math**

sorry but i don't understand this one either solve 4sin^2x+4√2 cosx-6 for all real values of x

*February 28, 2016*

**math**

oh ok i think i understand how to do them know...thank you

*February 28, 2016*

**math**

if Ø is an angle in the first quadrant and cosØ= 1/2, find the exact value of cos2Ø

*February 28, 2016*

**math**

if cosØ=0.6 and 0°<Ø<90°, find the exact value of 2Ø

*February 28, 2016*

**GEO**

A major objective of the South Pacific Forum founded in 1971 was A. identifying and resolving human rights concerns in the region. B. reconciling diverse cultural heritages. C. stopping French nuclear testing in the region. D. expanding the copra trade.

*February 2, 2015*

**math**

The perimeter of a rectangle is 39centimeters. The perimeter of a circle is 39 inches. Which statment is correct about the two shapes is correct? The rectangle/The circle/ or both

*January 21, 2015*

**Physics**

Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 5 m/s2 for 4.2 seconds. It then continues at a constant speed for 11.1 seconds, before applying the brakes such that the car...

*January 21, 2015*

**Math**

The sides of the equilateral are given in cm. 3x 2,2y-x,y 3. Find x and y and the perimeter of the triangle

*November 27, 2014*

**statistics**

past history indicates that an average of 1.2 calls are received per minute. What is the probability of 3 or more calls per minute

*September 28, 2014*

**physics**

The acceleration due to gravity on the moon is about one-sixth its value on earth. If a baseball reaches a height of 78 m when thrown upward by someone on the earth, what height would it reach when thrown in the same way on the surface of the moon? Answer in units of m

*September 20, 2014*

**Math**

square root -1 divided by square root -81 square root -36

*September 19, 2014*

**Math**

A box with an open top is to be constructed by cutting a-inch squares from the corners of a rectangular sheet of tin whose length is twice its width. What size sheet will produce a box having a volume of 32 in^3, when a = 2? width in length in

*September 14, 2014*

**8th grade geometry**

The quarterback throws a pass from 10 yards from a goal line and 25 yards from a sideline. A receiver catches the pass at 40 yards from the same goal line and 5 yards from the same sideline. How long was the pass?

*April 25, 2014*

**science**

If you see that a hot-air balloon is rising above the top of a hill, what is the top of the hill called?

*April 17, 2014*

**chemistry**

CO2(g) + H2(g) equilibrium reaction arrow CO(g) + H2O(g) Calculate the equilibrium concentration of each compound if 2.00 moles of CO2 and 2.40 moles of H2 are placed in a 3.90 liter container at 300°C. Kc = 2.30 for the reaction at this temperature. [CO2] = M [H2] = M [CO...

*December 18, 2013*

**Social studies (7th gr.)**

fkfkmfkmkfmkfmfkmkmkmfkmkmfkmkdmdkmkdmdkfmkfmkfmkfmdkmfkmkdfmkdfmkdfmkdmdkd

*December 18, 2013*

**Jr Applied Math (Algebra II)**

c=15+10h c=8h

*November 6, 2013*

**Math**

I got 2190.

*October 16, 2013*

**world geography**

A major objective of the South Pacific Forum founded in 1971 was A. identifying and resolving human rights concerns in the region. B. reconciling diverse cultural heritages. C. stopping French nuclear testing in the region. D. expanding the copra trade.

*June 22, 2013*

**algerbra**

Type of Cookie Adults Children Total Chocolate Chip 5 10 Peanut Butter 8 6 Oatmeal 7 4 18. Based on the two-way frequency table, how many adults were surveyed? (1 point)13 15 20 40 19. What percentage of the children chose peanut butter? (1 point) 25% 30% 45% 70%

*April 16, 2013*

**Math**

Lois brought 6 gallons of milk for the soccer team they drank 10 quarts of the milk. How many quarts of milk were left over ?

*April 15, 2013*

**math**

Jake has 3/4of a dollar.maxwell has 1/10 of a dollar.do they have more or less than 1.00 dollar in all

*March 5, 2013*

**chemistry**

How many liters of 2.09 HCl solution would be needed to prepare 1.14 L of 0.69 M HCl solution?

*February 27, 2013*

**Division story**

Betty planted 54 seeds. She has 6 pots. If she wants to plant the same number of seed in each pot,how many seeds will she put in each pot? 54 divided by 6=9 She will put nine seeds in each pot

*February 6, 2013*

**social studies**

what is North Carolina largest port

*January 8, 2013*

**math**

Hooke's law states that the distance an object is stretched varied directly with the force exerted on the object. Suppose the force exerted by 7-kg mass stretches a certain spring 5 cm. To the nearest 0.1 cm. how far will the spring be stretched by the force of an 11-kg ...

*October 18, 2012*

**algebra**

Hooke's law states that the distance an object is stretched varied directly with the force exerted on the object. Suppose the force exerted by 7-kg mass stretches a certain spring 5 cm. To the nearest 0.1 cm. how far will the spring be stretched by the force of an 11-kg mass?

*October 18, 2012*

**hW**

A map scale shows that 1.3 inch on the map equals an actual distance on 3 miles. If a distance on the map is 3.4 inch, what is the actual distance in miles?

*September 11, 2012*

**Math**

When Jill woke up in the morning, the outdoor temperature was 3 degrees below zero. What integer represents the temperature?

*January 31, 2012*

**6th grade math**

how to solve w/3=17

*January 22, 2012*

**algebra**

Gordon has n stamps. Ahmed has twice as many stamps as Gordon. Peter has three times as many stamps as Ahmed. How many stamps does Peter have?

*January 17, 2012*

**algebra**

Marta got 88 points on her English test. Sandy got x points on the same test. What was their average score?

*January 17, 2012*

**physics**

A rock falls from rest a vertical distance of 0.63 meters to the surface of a planet in 0.48 seconds. What is the magnitude of the acceleration due to gravity on that planet?

*October 27, 2011*

**social studies**

Andes mountain range

*May 4, 2011*

**us history**

I need help on a small essay on why the embargo act of 1807 wasconsiderd a disaster

*April 25, 2011*

**science**

what is the formula for calcium and oxygen

*March 1, 2011*

**math**

Definition for Verbal Model

*February 23, 2011*

**history**

what were the conflicts and sources of tension leading up to ww1?

*February 13, 2011*

**science**

Determineyour distance traveled and displacement if you walk 100m forward and then 35m back

*February 1, 2011*

**Math**

2 mi.x _ = _ ft.?

*January 27, 2011*

**Spanish**

12. (A) 13.(C)

*January 27, 2011*

**math **

how to add mixed fractions:17 2/3 23 1/4= ?

*January 26, 2011*

**6th grade math**

You have 15 yards of ribbon for your gift boxes. Each box gets the same amount of ribbon. How much ribbon will each of your 20 gift boxes get?

*January 10, 2011*

**10th grade**

i have an equation; x^2+3x-18=0. i am given one of the roots, of which is 3, but how do i find the other root.

*December 20, 2010*

**5th Grade Math**

6 1/8=49/8 1 7/8=15/8

*November 30, 2010*

**math**

where do you place parentheses to make this statement true 9,5 + 2 - 8 times 3 + 1 = 22

*October 20, 2010*

**history**

The impact of segregation in washington dc after the civil war. were can I find information?

*June 21, 2010*

**English**

why did the Virginia Woolf had such a revolutionary impact on so many writers?

*June 12, 2010*

**English**

What literary device that is common to Modernist poetry and this poem T.S. Eliot's "The Love Song of Alfred J. Prufrock" Help Plz!!!!!!!

*June 11, 2010*

**History**

What Northern Renaissance painter stuck most closely to the Italian Renaissance model and ideals?

*May 30, 2010*

**Social Studies**

Thank You

*May 30, 2010*

**Social Studies**

Why were there fewer patrons in Northern Europe than in Italy? HELP please! could not find answer on google.

*May 30, 2010*

**social Studies**

which Northern Renaissance painter stuck most closely to the Italian Renaissance model and ideals?

*May 30, 2010*

**Social Studies**

Why were there fewer patrons in Northern Europe than in Italy?

*May 30, 2010*

**Science**

What kind of animal cells might have alot of mitochondria present?

*May 17, 2010*

**math**

square root of 5 over 5

*April 14, 2010*

**Chemistry**

It must have something that tells you whether it is in nature or not right????

*January 28, 2010*

**antonyms**

Under Over

*November 18, 2009*

**math**

how many meters are in 3,000cm

*March 12, 2009*

**Algebra**

How can i Multiply and Divide Polynomials by Monomials?

*February 4, 2009*

**spelling**

what is the memory rule

*November 10, 2008*

**4thgrade math**

9.0

*November 1, 2008*

**4thgrade math**

what does 9.4 round to?

*November 1, 2008*

**vocabulary**

what is the meaning of assent?

*October 27, 2008*

**Music**

Pour different amounts of water into three identical glass bottles. Which has the highest tone, which has the lowest tone. Why?

*October 24, 2008*

**math**

what is a slope

*September 3, 2008*

**equations**

does it make a diffrence what two points you chooose on a stragight line to find the slope of the line

*September 3, 2008*

**math**

What is findind a five number summary of each ser of numbers 7,7,5,4,1,9,8,8,8,5,2 and range of the same numbers please I only see one set of numbers. Why do you refer to "each" set? What five-number summary are you refering to? Mean, median, mode and what else? The ...

*June 12, 2007*

**math**

the following scores were recorded on a 200-point final wxam 193,185,186,192,135,158,174,188,172,168,183,195,165,183. what is the mean please and is the mean or the median mor improtant for this Please see the other posts to figure out how to find the mean. Since these are ...

*June 12, 2007*

**math**

what is a mean and how you do it A mean is the average. To find the mean add the numbers together. Then divide. For instance, to find the mean of 4, 8, and 9, you need to add those three numbers together and get 21. Divide 21 by 3 to get the mean -- 7.

*June 12, 2007*

**geometry**

a salesperson drove 238,259,87,163and 198 miles on a 5 day trip what was the mean number of miles driven per day? please Add the 5 numbers together. Then divide by 5 to find the mean (average) number of miles she drove each day. what is a mean A mean is the average. To find ...

*June 12, 2007*

**math**

what is the mode of 9,8,10,9,9,10,8 The mode is the range that occurs most often. In your problem, the mode is 9 because you have three 9's and only two of the other numbers. http://mathforum.org/library/drmath/view/58326.html thanx

*June 12, 2007*

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