Tuesday

February 9, 2016
Total # Posts: 353

**Math**

Destiny has 6 library books on her desk. 1/3 of them are about animals. How many of Destiny library books are about animals? Draw a diagram to show your work.
*January 25, 2016*

**U.S. Gov. & Economics**

I think so.
*January 21, 2016*

**Science**

thank you very much!
*January 21, 2016*

**Science **

I would really appreciate help! Compare renewable and nonrenewable energy sources, and discus the effects of each on biodiversity. (I need about 6 sentences) (I have tried thinking about it and cannot seem to figure it out)
*January 21, 2016*

**math **

Solve the system x+4y=1,-x+y=4.What is the -coordinate of this solution x.
*January 9, 2016*

**worlds history**

did the great pyramid of giza for its ststed purpose?
*November 28, 2015*

**math**

the number of pat's roses to the total number of pat's flowers. a)76:31 b)76:107 c)31:107 d)31:76
*November 24, 2015*

**English**

Scouts comments to Calpurnia (beginning "I told Calpurnia to just wait") suggest that A- scout is cruel and spiteful B- calpurnia is loving and educated C- the relationship between the two is strained D- scout is suicidal and vengeful E- calpurnia is inattentive and ...
*November 18, 2015*

**math**

Need help in solving this word problem. That are the steps? Of the total number of spectators at a circus, 1/4 are men. 2/5 of the remaining number of spectators are women. There are 132 women at the circus show. How many children are at the circus show?
*November 16, 2015*

**algebra**

9/16 / 7/10 divide. write the answer in simplest form.
*November 11, 2015*

**Math**

Which of the following options is an equivalent function to f(x) = 4(3)2x? A.f(x)= 36x B.f(x)= 4(9)x C.f(x)= 144x D.f(x)= 4(6x)
*November 4, 2015*

**Math**

Which of the following options results in a graph that shows exponential growth? A.f(X)= 0.4(3)X B.f(X)= 3(0.5)X C.f(X)= 0.8(0.9)X D.f(X)= 0.9(5)-X
*November 4, 2015*

**Chemistry**

A student dissolved 1.62 g of calcium bicarbonate into 500. mL of water. Excess amount of hydrobromic acid was then added to the solution until bubbling stopped. At STP, what approximate volume (in L) of the gaseous compound would be produced in this reaction?
*October 17, 2015*

**Math**

1. You are having a discussion about sequences with your classmate. She insists that the sequence 2,3,5,8,12 must be either arithmetic or geometric. Is she correct or incorrect? Explain. Can you help please 2. Determine whether the sequence is arithmetic, geometric, both, or ...
*October 9, 2015*

**Math**

The number of locks is 9 in the ones place the number in the hundreds place is one more than the number in the tens place those two numbers equal 11 how many blocks are there
*September 22, 2015*

**Physics**

A 10.0 kg object is resting on a horizontal surface with a coefficient of friction of 0.7. Determine the minimum force that can move the object.At what inclination should force be applied?
*September 14, 2015*

**math grade 12**

A sheet of plastic stops 25% of the light and lets through the residual 75%. What percentage of the light is let through by two sheets of the plastic ?
*August 17, 2015*

**math grade 12**

Sara got 85% and 89% on her first two Maths tests. What must she get on her third test to have at least a 90% test average. Assume three tests, represent the problem with an inequality and then solve it.
*August 17, 2015*

**Phenoix**

teresa buys 100 shares of XYZ sock on margin at $20 per share. If the margin requirement is 45 percent, the interest rate is 10 percent, and she holds the security for 1 year, how much interest must she pay?
*June 14, 2015*

**calculus**

find the exact arc length of the curve: y=0.5(e^x + e^-x) for 0 is less than or equal to x and x is less than or equals to ln2.
*May 6, 2015*

**calculus (please help)**

find the volume of the solid whose bounded by the circle x^2+y^2=4 and whose cross sections perpendicular to the y-axis are isosceles right triangles with one leg in the base. Please give explanation and steps
*April 22, 2015*

**math**

Find the volume of the solid formed by revolving the region bounded by f(x)= 2-x^2 and g(x)=1 about the line y=1.
*April 22, 2015*

**math**

A study of two types of weed killers was done on two identical weed plots. One weed killer killed 15% more weeds than the other. This difference was significant at the 0.05 level. What does this mean? A. The improvement was due to the fact that there were more weeds in one ...
*April 16, 2015*

**science**

Hey just wondering what are the correct answers?
*April 16, 2015*

**calc(very urgent)**

Imagine a flat-bottomed cylinderal container with a circular cross section of radius 4 in. a marble with radius 0<r<4 inches is placed in the bottom of the can. what is the radius of the bottom that requires the most water to cover it. (include first or second derivative...
*April 16, 2015*

**please help! someone plz**

Imagine a flat-bottomed cylinderal container with a circular cross section of radius 4 in. a marble with radius 0<r<4 inches is placed in the bottom of the can. what is the radius of the bottom that requires the most water to cover it. (include first or second derivative...
*April 16, 2015*

**math**

Imagine a flat-bottomed cylinderal container with a circular cross section of radius 4 in. a marble with radius 0<r<4 inches is placed in the bottom of the can. what is the radius of the bottom that requires the most water to cover it.
*April 16, 2015*

**science**

Hi Amy, If you have completed this test can you please tell me what the answers are? I really need to know!:) Or Ms. Sue could you explain the correct answers to me. I am studying material like this and would love to know these answers for reference. Can Damon, Steve, Reed, or...
*April 15, 2015*

**MATH**

I'm sure what if this is the right answer that the question is looking for. since my eng. not that good i have hard time understanding. Please help me. Question: write a situation that can be modeled by the following linear system. Explain what each variable means, then ...
*March 31, 2015*

**Social Studies**

It's the Romans and Greeks since the Romans adopted the Greek pantheon of Gods and Goddess. That's why Greek and Roman mythology involve many of the same Gods and Goddesses.
*March 20, 2015*

**math**

A diamond is purchased for $3500. Its value increases 4% each year. Find the value of the diamond at the end of the sixth year of ownership.
*March 19, 2015*

**MATH**

Thank You
*March 18, 2015*

**MATH**

So the total of 4 equation have the same slope but different b values?
*March 18, 2015*

**MATH**

How do I write one equations in slope-intercept form, and three other lines in slope-intercept form that are perpendicular to the first line ?? for ex. If I pick the equation y=2/3x+4 for the first equation. and for the second line , the slope -2/3x +4 , how about the 3rd and ...
*March 18, 2015*

**math - slope-intercept**

How do I write one equations in slope-intercept form, and three other lines in slope-intercept form that are perpendicular to the first line ?? for ex. If I pick the equation y=2/3x+4 for the first equation. and for the second line , the slope -2/3x +4 , how about the 3rd and ...
*March 17, 2015*

**math**

How do I write one equations in slope-intercept form, and three other lines in slope-intercept form that are perpendicular to the first line ?? -- one line: y=mx+b second line perpendicular y= -x/m + c of course, you have to know m, b, c. ----- for the second line ...
*March 16, 2015*

**math**

for the second line perpendicular, example if it -2/3 slope. it will be use for the 3rd and 4th line perpendicular right ? and pick any value of for y-intercept for the 3rd and 4th ?
*March 15, 2015*

**math**

How do I write one equations in slope-intercept form, and three other lines in slope-intercept form that are perpendicular to the first line ?? Please Help, Thank you =)
*March 15, 2015*

**math**

write a four equations in slope-intercept form of four different lines that are parallel and graph the line ?? HELP pleaseee!! thank you
*March 13, 2015*

**math**

Each homeroom of a middle school receives 1/12 of a 5/6 acre of land. How many homerooms receive a plot of land?
*February 27, 2015*

**Chemistry**

Thank you so much :)
*February 13, 2015*

**Chemistry**

Methanol ---> Normal BP: 64.6°C --> dHvap: 35.3kJ/mol iso-Propanol ---> Normal BP: 82.3°C --> dHvap: 45.4kJ/mol Cyclohexane ---> Normal BP: 80.7°C --> dHvap: 33.1kJ/mol Question: Ethanol has a normal BP of 78.3°C. Why is the normal BP higher ...
*February 13, 2015*

**Chemistry**

Okay thank you, since they did not give me the data plots, I'm guessing I should sketch the graph on my own.
*February 13, 2015*

**Chemistry**

The equation for the best fit line was y = -4058.7x + 16.10. Using the equation of the best fit line, calculate the heat of vaporization (delta H) and the NORMAL BOILING POINT (in Celsius) of this volatile liquid. Calculated: dHvap = 33.7kJ/mol ----> I'm really confused...
*February 13, 2015*

**physicsss**

An oxygen molecule consists of two oxygen atoms whose total mass is 5.3 x 10^-26 kg and whose moment of inertia about an axis perpendicular to the line joining the two atoms, midway between them, is 1.9 x 10^-46 kg*m^2. Estimate, from these data, the effective distance between...
*February 3, 2015*

**chemistry**

how many moles are present in 2.45 x 10²³ molecules CH₄?
*February 1, 2015*

**Math**

Thank you sooooo much for helping me
*January 18, 2015*

**Math**

Wouldn't it be 12.5
*January 18, 2015*

**Math**

Ms. Sue how much of the pizza is left? How Do I find that out
*January 18, 2015*

**Math**

12.5
*January 18, 2015*

**Math**

50.27 divided by 1/4
*January 18, 2015*

**Math**

Then what do I do
*January 18, 2015*

**Math**

Or is it just 4
*January 18, 2015*

**Math**

Is it 50.27
*January 18, 2015*

**Math**

A=πr2
*January 18, 2015*

**Math**

I got 12.56 as my area
*January 18, 2015*

**Math**

Oh okay and I don't get number five
*January 18, 2015*

**Math**

I mean I get about five cookies
*January 18, 2015*

**Math**

If I divide them then I can't about five cookies
*January 18, 2015*

**Math**

Yes ma'am I got 28.26 it was an accident and do I divide both of them
*January 18, 2015*

**Math**

My mistake- 6 inch cookie have an area of 28.27 and then 12 inch cookie has an area of 113.1 do I subtract both of them
*January 18, 2015*

**Math**

On #4 both of them have an area of 113.1
*January 18, 2015*

**Math**

Could you please help me with #4 and 5
*January 18, 2015*

**Math**

So 16 is the correct answer
*January 18, 2015*

**Math**

So would it be about 16 rolls of ribbon or 15
*January 18, 2015*

**Math**

On number two I got 15.7
*January 18, 2015*

**Math**

On #1 I got 131.88 And on #2 I got 25,120
*January 18, 2015*

**Math**

Well I just needed help solve each of these problems that's all
*January 18, 2015*

**Math**

Q#1-josh just put new tires on his car. if the wheels have a diameter of 14 inches, determine how far will the wheels travel in 3 revolution, to the nearest hundredth? Q#2-Melanie wants to put ribbon around the circumference of a circular section of the park. Ribbon comes in ...
*January 18, 2015*

**Biology**

Thank you very much!
*January 1, 2015*

**Biology**

A cell is lacking in its supply of amino acids. Which of the following will occur? A- mRNA will not be formed because enzymes may not be present. B- The ribosomes will not work properly because there will be no proteins. C- tRNA may not be able to fulfill its job. D- all of ...
*January 1, 2015*

**Biology**

Okay! Thank you so much for explaining and helping me with this! I really appreciate it! :)
*December 31, 2014*

**Biology**

Which of the following . is true about the DNA molecule during transcription? A- It opens up all of the way, one gene at a time. B- It unwinds from both ends. C- It makes a copy of itself. D- Only a small area is opened. My choice is C.
*December 31, 2014*

**Biology**

Thank you! :)
*December 31, 2014*

**Biology**

Which of the following is one role of RNA polymerase during transcription? A- to break down an already existing protein B- to produce a start sequence C- to build a molecule of mRNA D- to switch uracil with thymine on the exposed gene My choice is C.
*December 31, 2014*

**Physics~ ONE MOREE**

Thanks soooo much, I always doubt myself when I get really simple looking problems so then I start to over think it too much. At least I now know I should stick with the answer I first get :)
*December 29, 2014*

**Physics~ ONE MOREE**

Which of the following must the investigator measure during an experiment? independent variable dependent variable <<<<< controlled variable
*December 29, 2014*

**So what about this one bob? Physics**

Yessssssssss :D
*December 29, 2014*

**So what about this one bob? Physics**

Which of the following is closer to a guess? hypothesis<<<<< law question theory
*December 29, 2014*

**Physics**

Which of the following statements is true? A hypothesis always leads to a theory which leads to a law. A hypothesis always leads to a law which leads to a theory. A hypothesis must lead to a theory only. A hypothesis can lead to either a theory or a law. <<<<<&...
*December 29, 2014*

**math**

not to be personal or anything ms sue why do u help on jiskha were u a professor at one point do u know the other professors
*December 11, 2014*

**math**

noel started going to yoga class on november 3, and went every third day after that. Lana also started classes on november 3, and went every fourth day after that. In how many days will they be in class together again?
*December 11, 2014*

**math**

the cost of a midnight madness movie ticket, is reduced by 2/5 of the original cost, to a cost of 3/5c. which expression is equivalent to the new cost? A)c-3/5c B)1-3/5c C)1-2/5c D)c-2/5c
*December 10, 2014*

**Derivative Test( as in the consept) **

Second derivative test to test the critical points
*December 9, 2014*

**Derivative Test**

Consider the function y = 3x5 – 25x3 + 60x + 1. Use the first or second derivative test to test the critical points. How many relative maxima did you find? I got 2 as the relative maxima, is this done correctly?
*December 9, 2014*

**physics**

An egg rolls off a kitchen counter and breaks as it hits the floor. The counter is 1.0 m high, the mass of the egg is about 50 g, and the time interval during the collision is about 0.010 s. How large is the impulse that the floor exerts on the egg? use equations of motion to ...
*December 7, 2014*

**physics**

An airplane traveling at v = 163 m/s emits a sound of frequency 1730 Hz. At what frequency does a stationary listener hear the sound as the plane approaches? Use 340 m/s for the speed of the sound and answer in Hz.
*December 1, 2014*

**physics**

Assume that there is no friction between m2 and the incline, that m2 = 2.4 kg, m1 = 1.2 kg, the radius of the pulley is 0.10 m, the moment of inertia of the pulley is 4.8 kg m2, and θ = 25.0°. a) Find the combined mechanical energy of both masses the instant the ...
*November 26, 2014*

**physics**

Two sounds have measured intensities of I1 = 102 W/m2 and I2 = 408.00 W/m2. By how many decibels is the level of sound 1 lower than that of sound 2? Answer in dB
*November 24, 2014*

**physics**

Elephants communicate via infrasound, at frequencies as low as 14 Hz that can travel up to 10 km. The intensity of these sounds can reach 103 dB, measured a distance of 5.0 m from the source. Determine the intensity level of the infrasound 10 km from the source, assuming the ...
*November 24, 2014*

**Algebra 2**

Step 1: 5x-6=0 +6 +6 Add the six to both sides Step 2: Then divide the five to both sides isolate the x 5x=6 /5 /5 Answer should be: x=6/5 Then do the same to the second one and you should get x=-25 if you did it right
*November 12, 2014*

**Science**

1. A balloonist drops an apple weighing 1.5 N over the side of the balloon's gondola. As it falls and increases speed, the drag force from the air upward on it increases. When the upward force is 0.7 N, what is the direction and magnitude of the net force on the apple? 9.8...
*November 7, 2014*

**Physics**

1.A plane traveling at 300.0 km/h attempts to land on a 500 m runway. The plane’s engines and brakes accelerate uniformly at –5.0 m/s2. Will the plane be able to land safely? Show all your work. Include any equations used, the given and unknown. Show all calculations...
*October 22, 2014*

**Math**

I mean .20 and .020
*October 2, 2014*

**Math**

so is it .02 and .002?
*October 2, 2014*

**Math**

Janice thinks that 20 hundredths is equivalent to 2 thousandths because 20 hundreds is equal to 2 thousands. Use words and a place value chart to correct Janice’s error.
*October 2, 2014*

**chemistry**

How much benzoic acid is still dissolved when 73.53 mL of saturated boiling water is cooled to 20oC. The solubility at 20oC is 0.029g/10mL.
*September 17, 2014*

**algebra**

Thank You
*September 11, 2014*

**algebra**

$4.99 for 48 fluid ounces
*September 11, 2014*

**algebra**

Find the price of any container of lemonade at a local grocery store. (You can also find prices in advertisements and on the Internet.) Make sure you write down the number of fluid ounces in the container. Determine the unit price and post the information.
*September 11, 2014*