Wednesday
September 3, 2014

Posts by jenna


Total # Posts: 489

math
find the perimeter and area of a right triangle if 1 leg measures 10 ft. and the other leg measures 24ft. show all work please.
July 3, 2011

math
okay but the options i have to choose from are: a. 26Pi in. b. 6.5Pi in. c. 13Pi in. d. 42.25Pi in. e. 169Pi in. i think it's a. right?
July 3, 2011

math
the pi is 3.14
July 3, 2011

math
i am confused??
July 3, 2011

math
what is the exact circumference of a circle with a diameter of 13 inches?
July 3, 2011

math
i got that too! thank u :)
July 3, 2011

math
Find the area of a square if 1 side measures 22 cm. Include correct units with solution.
July 3, 2011

math
l * w right?
July 3, 2011

math
Find the area of a rectangle if its length measure 12 cm and its width measures 13 cm. Include correct units with the solution.
July 3, 2011

Differential Equations
A car is traveling at 70 mph skids 240 ft after it's breaks are suddenly applied. Assuming that the cars breaking system provides a constant deceleration, find that deceleration. How long did it take the car to stop?
June 19, 2011

global history.
What did people in Ancient Greece trade with other countries? What were the trade routes, what did they trade, and finally, what was the effect on Greece ?
June 7, 2011

math
A vase in the shape of a sqare based pyramid just fits inside a box in the shape of a square based prism. If the prism has the volume of 720 cm then what is the volume of the vase?
May 29, 2011

english
What value does Macbeth put on his soul in Act III, Scene I of "Macbeth" by Shakespeare.
May 17, 2011

Physics
a chain pulls tangentially on a 33.4kg uniform cylindrical gear with tension of 70.1 N. the chain is attached along outside radius at 0.794m from the axis of rotation. starting from rest gear takes 1.59 s to reach rotational speed of 1.08 rev/s. what is total frictional torque...
May 10, 2011

Physics
A boy of mass 37.8kg. is rescued from a hotel fire by leaping into a firefighters' net. The window from which he leapt was 8.02 above the net. The firefighters lower their arms and he lands in the net so that he is brought to a complete stop in a time of 0.491 s. What is ...
May 9, 2011

8th grade algebra: radicals
please help me solve these 1. 2√5/8 + 4√3/8 - 1/2√68 2. √4k-5 +1=8 (the radical sign goes over 4k-5) 3. (x+4)*2 /3 =8 4. Write the value of the discriminant of each equation. Then use it to decide how many different real-number roots the equation has. x...
May 6, 2011

Programming Logic
I need to create a flowchart/psuedocode for a dice game that give you 2 rolls with 5 dice, 3 rolls per game. the computer will roll the 4 dice and calculate your score. my question is...do i need to repeat this 3 times and can i use nested loops and if so..how do i set this up...
April 27, 2011

physics
Dispersion in a window pane. In the figure on the left, a beam of white light is incident at angle θ = 51° on a common window pane (shown in cross section). For the pane's type of glass, the index of refraction for visible light ranges from 1.528 at the blue end ...
April 17, 2011

chemistry
5.00 atm
March 31, 2011

Chem
H2SO4 +NaCO3 > Na2SO4 +Co2 +H2O if 150.0 g Of Sulfuric acids is spilled what is the minimum number of moles of sodium carbonate to complete this reaction?
March 26, 2011

pre calc
lnX + ln2 = 3
March 24, 2011

biology / help me
The hemophilia gene is located 12 map units from the red-green colorblindness gene on the X chromosome. Red-green colorblindness is recessive to normal color vision. A woman with normal blood clotting and normal color vision, but whose father was a hemophiliac and whose mother...
March 17, 2011

please help me
The hemophilia gene is located 12 map units from the red-green colorblindness gene on the X chromosome. Red-green colorblindness is recessive to normal color vision. A woman with normal blood clotting and normal color vision, but whose father was a hemophiliac and whose mother...
March 17, 2011

biology /help
. The hemophilia gene is located 12 map units from the red-green colorblindness gene on the X chromosome. Red-green colorblindness is recessive to normal color vision. A woman with normal blood clotting and normal color vision, but whose father was a hemophiliac and whose ...
March 17, 2011

Chemistry
An unknown compound X is one of the four compounds listed in the table below. A mixture of X with o-toluic acid melts at 100 degrees Celsius, a mixture of X with benzoic acid melts at 112 degrees Celsius, a mixture of X with phenyl succinate melts at 110 degrees Celsius, and a...
March 14, 2011

chemistry
Ok now I have to find the mole fraction of the solvent. I know the formula, which is the moles of a substance/ total moles of solution. Is the moles of the substance the number we just obtained? And which is the "total" moles of solution?
March 3, 2011

chemistry
Sorry the 18.02 is for water.
March 3, 2011

chemistry
To find the moles of solvent present, would you divide the mass the solvent by 18.02g/mol? I am given this: MM=18.02g/mol
March 3, 2011

chemistry
How do you find the mass of a solution if you have 1L of 2.5 M MgCl2. I have determined how many moles are present in MgCl2 which was 2.5 and how grams are present which came out to be 238.025g Now I'm asked "What is the mass of the solution and the mass of the ...
March 3, 2011

Organic Chemistry
What is the major product from the sulfuric acid and Hg(II)-catalyzed hydration ethynylcyclohexane?
March 3, 2011

math
Yes, thank you for thw awswers to my homework.
February 9, 2011

math
Thanks guys that really helped me on my homework :D im in 5th grade
February 9, 2011

Math
a building cast a 235 ft shadow along the ground. the angle of the sun's ray with the ground is 24 degrees. How tall is the building?
February 1, 2011

eth/125
How do you think slavery influenced the evolution of both Black and White America today?
January 31, 2011

Math
I still don't get it..?
January 31, 2011

Math
24 - 20 = 4
January 31, 2011

Math
4, but they're asking what's the mistake that was made in the problem. Because 100 isn't the correct answer.. I'm really stumped on this. :(
January 31, 2011

Math
Describe the mistakes. 3 x 8 - 4 x 5 = 100
January 31, 2011

Math
Thanks so much!! :)
January 26, 2011

Math
A recipe calls for 4 1/2 cups of flour for 72 cookies. How many cups of flour would be needed for 48 cookies?
January 26, 2011

Writing
What is the effect of smoking near others?
January 25, 2011

math 20
Using the procedure of comlpeting the square, write the equation x^2+y^2-6x+8y=0 in the form (x-h)^2+(y-k)^2=r^2. state the domain and range where(h,k) is the center of the circle and r is the radius
January 15, 2011

spelling
what is the analogy for thorn
January 11, 2011

math
the line passes through the point (3,-8) and ,(-7,1)
January 8, 2011

science
How much work is done on a 30 N rock that is lifted 1.5 m off the ground? show work.
January 4, 2011

Algebra 1
-3x+6<21 -6 -6 -3x<15 /-3 /-3 x<-5
January 4, 2011

chemistry
what volume of 0.250 M calcium chloride needs to be added to sodium phosphate to produce 35.0 g of calcium phosphate ?
December 15, 2010

12th grade
Objects on the moon's surface have an acceleration due to gravity one-sixth that on the earth's. What would the 40 kg boy weigh on the moon? (Round answer to nearest tenth.)
December 9, 2010

Physics
A particular guitar string is supposed to vibrate at 220 , but it is measured to vibrate at 230 . By what percent should the tension in the string be changed to correct the frequency? I have been working for 7 hours of hw! Please help!
November 15, 2010

chemistry
oops sorry.. did not mean to post this twice
November 15, 2010

chemistry
If a solution appears to be violet, what range of wavelength would you use for analysis of the solution? How about if the solution was blue-green?
November 15, 2010

Chemistry- wavelengths
a. If a solution appears to be violet, what range of wavelength would you use for analysis of the solution? b. How about if the solution was blue-green?
November 15, 2010

Chemistry
What is the pH of the solution obtained when 125 mL of 0.614M NaOH is diluted to 16.0 L with water?
November 9, 2010

spanish
yo bebo mucha agua..is this right?
November 1, 2010

math
(Y+3)^2/5+4(Y+3)^7/5=0 solve this equation by factoring. I don't know how to factor problems like this
October 28, 2010

science
Is Saturn's orbit more elliptical and it's tilt larger than Jupiter's?
October 24, 2010

Thermochemistry
H=? q=2.426 kJ w=-6 kJ Therefore, E=-8
October 18, 2010

Math
A thousandths grid is completely coloured in when tree different decimals are shown. One decimal is double of the others.
October 13, 2010

philosophy
In mediation 3 what does it mean to have the formal/inherent reality of things and the objective/representative reality of ideas? Thanks, Jenna
October 12, 2010

chemistry
if 30ml of .150 M CaCl2 is added to 22.5ml of .1 M AgNO3, what is the mass of the AgCl precipitate?
October 11, 2010

3rd grade math (array)
write two ways to break apart each array
October 7, 2010

physics
spherical aluminum ball of mass 1.22 kg contains an empty spherical cavity that is concentric with the ball. The ball just barely floats in water.Calculate the radius of the cavity.
October 5, 2010

math
How do you write a number in expanded form?
September 30, 2010

PHYSICS-HELP!!
Two bicyclists, starting at the same place, are riding toward the same campground by two different routes. One cyclist rides 1500 m due east and then turns due north and travels another 1430 m before reaching the campground. The second cyclist starts out by heading due north ...
September 16, 2010

Physics
I have a quick question, If a ballplayer catches a ball 3.0s after throwing it vertically upward. With what speed did he throw it, and what height did it reach?
September 13, 2010

physics
thank you very much
September 1, 2010

physics
A pump is installed in the basement of a 10-storey building in order to supply the occupants with water. Each storey is 3m high. How much pressure must the pump exert on the water so that the water reaches the 10th floor with a pressure of 400 kPa?
September 1, 2010

Physics
Within a book on a desk there are billions of forces pushing and pulling on all the molecules. Why is it that these forces never by chance add up to a net force in one direction, causing the book to accelerate "spontaneously" across the desk?
August 26, 2010

Accounting
Please check my answers. Identify each of the following as either assets, liabilities, or owner's equity. 1. Petty cash- Owner's Equity 2. Mortgage payable- Liabilities 3. Furniture- Assets 4. Owner's Capital- Owner's Equity 5. Food inventory- Assets 6. Profit...
August 24, 2010

Math
Use the discriminant to determine how many real number solutions the equation has 1-7a^2=-7a-2
July 20, 2010

Math
5x^2+4x+6=0, given the graph of y=5x^2+4x+6
July 20, 2010

Math
Give the equation of the line that is perpendicular to the line y=-3+7 and passes through point (0,-6)
July 20, 2010

Math 157
how many polygon arrangements does a semi-regular tessellation have?
July 3, 2010

Chemistry
A cubic piece of metal measures 6.50 on each edge. If the metal is nickel, whose density is 8.90 , what is the mass of the cube?
June 14, 2010

chemistry
Data obtained from lab (neutralization): H2SO4: C =1.0mol/l V = 30 mL Initial temp. = 24.1 NaOH c= 1.0mol/L v= 50 mL initial temp. = 23.9 Final temp. of H2SO4 & NaOH = 32.9 Assume specific heat capacity of both these substance is equal to water's = 4.19 Calculate the molar...
June 12, 2010

Chemistry 30
According to the data booklet Cu(NO3)2 and Sn(s) are spontaneous Cu2+ being a strong reducing agent and Sn(s) being a strong oxidizing agent but according this lab: d2l.adlc.ca/content/ADLC-Depts/ScienceSH/SCN3796-5cBl-08Feb10/chemistry_30/mm/m3/m3_l3_testing_predictions/...
June 10, 2010

Math 157
The chart on the next page is an example of a quality control chart. Samples of parts and products are drawn from an assembly line and checked against engineering specifications. Write a short report describing the various features of the chart and the performance of the ...
May 28, 2010

Chemistry
That's really easy. you do 250/100 which is 2.5 then, you multiply that to the mass of KCl and get 90g like what the other person said.
May 26, 2010

math/area
On grid paper I have a capital letter I three cubes across to make the top of letter I, three cubes in the middle, and three cubes across the bottom? So, how would I figure out the area?
May 19, 2010

Math
Yesterday someone posted my exact question, but I can't find the answer. What is area/perimeter of capital letters: I, U, and J? I know that area= lxw P= add up all the sides The area part is hard to figure
May 19, 2010

Math
number 9 is D
May 16, 2010

math
The Rental Depreciation Problem. The owner of a rental house can depreciate its value over a period of 27 ½ years, meaning that the value of the house declines at an even rate over that period of time until the value is $0. a. By what fraction does the value of the ...
May 7, 2010

english
ur welcome emilio
May 3, 2010

english
Search on the internet for more details about earthquakes.
May 3, 2010

english
An earthquake is a violent shaking of the Earth's crust that may cause destruction to buildings and results from the sudden release of tectonic stress along a fault line or from volcanic activity.
May 3, 2010

Math
Suppose r(x) = 8(x)^(1/2) represents revenue and c(x) = 2(x)^2 represents cost, with x measured in thousands of units. Is there a production level that maximizes profit? If so, what is it?
April 28, 2010

Elementary math for teachers
Scoring in Golf. A golfer played 8 rounds on a tournament course with the following scores (par is the expected score for a round; negative numbers represent the number of strokes under par for the round, and positive numbers represent the number of strokes over par for the ...
April 27, 2010

History WWII
Can you help me put the following events in order: -hitler declares austria part of germany -naie terrorize jewish on "kristallnacht -france and GB agree to defend Poland -hitler and stalin sign a friendship treaty -the leaders of GB, France, Italy and Germany meet -nazi ...
April 27, 2010

math
write 40% two different ways
April 22, 2010

Geometry
BD is a perpendicular bisector of triangle ABC. XZ is a perpendicular bisector of triangle WXY. Triangle ABC is similar to triangle WXY with a scale factor of 1:3. Part I. Find BD, AB, WZ, XZ and WX. Part II. What is the scale factor of the perimeters of triangle ABC and ...
April 6, 2010

math 221
.25
April 6, 2010

math
find the volume of the solid whose base is bounded by y=e^(-x), y=3cos(x), and x=0 and whose cross sections cut by planes perpendicular to the x-axis are squares the answer is 3.992 units cubed but can someone explain to me how to get this answer using integrals?
April 5, 2010

science
where in the renal tubule is potassium and sodium reabsorbed by the blood?
April 4, 2010

chemistry
thank you :)
April 2, 2010

chemistry
How many electrons are transferred in the production of 6.06×10^−4 mol H2(g) from water?
April 2, 2010

Science
You throw a ball upward and then it falls back down. How does the velocity of the ball change as it rises and falls?
March 29, 2010

Chemisrty
okay so if the molar mass of Na3PO4 is 164. a multiply that by 0.1 and then multiply that by o.25 ??
February 22, 2010

Chemisrty
how do i solve for XXXX
February 22, 2010

Chemisrty
what mass of sodium phosphate is required to make 250mL of 0.10mol/L solution?
February 22, 2010

Chemistry
How many electrons and how many protons are in the ion Cr6+?
February 19, 2010

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | Next>>

Search
Members