Tuesday
November 25, 2014

Posts by Mari


Total # Posts: 117

chemistry
a solution consisting of 1.6M NaNO3 and 1.0M of Na(NO3)2 please help
November 10, 2014

math
from a boat, the angle of elevation of the foot of a lighthouse on the edge of a cliff is 34 degrees. if the cliff is 150m high, how far from the base of the cliff is the boat
October 29, 2014

math
GCF of each pair of polynomials 27 y3z and 45 x2y
September 19, 2014

Math
From 1990 to 2006, the population, p (in millions), of a large city can be modeled by p = 1.1(1.05)t, where t is the number of years since 1990.
August 24, 2014

Algebra
Pytheorem Quadratic Help me solve this problem x^2(2x+6)(2x+4)
August 11, 2014

Algebra
Please help me find the GCF of these two expressions 20x^5u^7 and 28x^3v^2u^4
August 11, 2014

Algebra
Please check and see if my answer are correct 1). 24v^2w^5x^8-20v^7w^9= -4v^2w^5(5v^5w^4-6x^8) 2). 81-25z^2= (5z+9)(9-5z) 3). 5y^3-7y^2-15y+21=(y^2-3)(5y-7) 4). x^2+4x-12= (x+6)(x-2) 5). 3x^2-26x+16= (x-8)(3x-2) 6).4v^6+6v^5-18v^4= 2v^4(2v-3)(v+3) 7). solve for y y^2+6y+8=0 y...
August 11, 2014

Algebra
What is the GCF of these two expressions? 30w^4v^8 and 24y^3w^6v^2 Please help me figure this out
August 11, 2014

Algebra
Ok Thank you
August 11, 2014

Algebra
Help me with these two equations Solve for v 2v^2+4v-14=(v+1)^2 solve for y y^2+6y+8=0
August 11, 2014

Algebra
Need help!! Please help me figure this out What is the length of 7ft more than twice the width and an area of the rectangle is 99ft^2. Find the dimension?
August 11, 2014

Algebra
What is the GCF of these two expressions 30w^4v^8 and 24y^3w^6v^2
August 11, 2014

Algebra
How do I factor this, Please help me.9w-w^3
August 11, 2014

Algebra
Sorry Damon, I thought I was overlooked..I appreciate the help Thank you!!!
August 11, 2014

Algebra
How do I factor this, Please help me.9w-w^3
August 11, 2014

Math
thank you so much !!
July 29, 2014

Math
there are 2 sin(alpha+beta)=(sin alpha)(cos beta)+(cos alpha)(sin beta) cos(alpha+beta)=(sis alpha)(cos beta)+(sin alpha)(sin beta) these identities to derive i)sin(alpha-theta) ii)cos(alpha-theta) iii)sin2theta I just want one of them solved in steps to be able to implement ...
July 29, 2014

Math
Nope, assuming I want to prove cos2theta is cos 2theta =1-2sin^2theta cos2theta=(1-sin^2theta)-sin^2theta cos2theta=1-2sin^2theta
July 29, 2014

Math
using sin(alpha-beta)=(sin alpha)(cos beta)-(cos alpha)(sin beta) use the identity to derive the result proof for : sin(alpha-beta) PLEASE PLEASE PLEASE HELP
July 29, 2014

Math
Write a formula expressing the information: i)Rose paid twice as much as Mike I used R for Rose and M for Mike The formula I cam up with is R=2M ii)Taxes are 6 percent of income [Use T and x] So I wrote it like this T(0.06)/X iii)There are twenty times as many students as ...
July 8, 2014

PreCalculus
A wire is 200 inches long is cut into three pieces, two of equal length, each twice as long as the third. How long is the third piece?
June 23, 2014

american history
Which of the following statements about the Southern planter's world is most accurate? A. Most great planters of the Old South were self-made men. B. The stereotype of the "southern belle" is fairly accurate. C. The wives and daughter of plantation owners lived ...
May 5, 2014

Chemistry
What is the density of carbon dioxide gas at 25 C and 779 mmHg?
April 24, 2014

Math
Evaluate 3X /4 if X=2
March 25, 2014

math
describe a situation in which you might use each calculation a)9/8 divided by 2/3 b)1 and 2/3 divided by 2 and 2/3
March 21, 2014

Language
What impact do ignorance and stigma have on people who are HIV-positive in Malawi and other African countries? It'll b much helpful if you dont give links Thank u :)
March 20, 2014

History
how have the metis retain their culture in modern canada
March 18, 2014

Math
Explain how to calculate 1/4 divided by 1/8 using reciprocal fractions
March 17, 2014

Math
Explain why 0.4 divided by 0.2 has the same answer as 4 divided by 2. (Hint: Convert the decimals into fractions with a denominator of 10.)
March 17, 2014

History
I need help on a few questions.. Full sentences would be nice. 1. When was Rupert's Land given to Prince Rupert? 2.What areas of land does Rupert's land cover? 3.What is called Rupert's Land now?
March 17, 2014

Science- help asap plz
Thanks :)
March 7, 2014

Science- help asap plz
think about the role that trees play in the water cycle. what are two of the ways in which they are part of the cycle?
March 7, 2014

Science- still waiting
okay
March 7, 2014

Science- still waiting
My teacher wants different examples than that.. I don't know what other examples to write
March 7, 2014

Science- still waiting
Give 2 examples for each state of fresh water: a) solid b)liquid c) vapour?
March 7, 2014

Science
Give 2 examples for each state of fresh water: a) solid b)liquid c) vapour?
March 7, 2014

scince
As you drive down the highway you may see crows feeding on dead animals. As a result of this nutritional pattern,crows may be classified as
February 17, 2014

Calculus (Math)
Integral of (cot4x)^5 (csc4x)^7
February 11, 2014

writing and linear equations
the measure of one angle is described as twelve more than four times a number. its supplement is twice as large. find the measure of each angle.
February 10, 2014

math
I have a pizza that measures 36 by 21 that needs to cut into equal pieces with no left overs. What is the length of longest side?
December 16, 2013

6th grade math
In the cafetería , 100 milk cartons were put out for breakfast. At the end of breakfast, 27 remained.
September 13, 2013

6th grade math
At the 6th grade school dance, there are 132 boys, 89 girls, and 14 adults.
September 13, 2013

chem
Consider two identical iron nails: One nail is heated to 95 °C, the other is cooled to 15 °C. The two nails are placed in a coffee cup calorimeter and the system is allowed to come to thermal equilibrium. What is the final temperature of the two nails?
September 12, 2013

Statistics
Step 2 - Transform the sample mean into a z-score (p. 133) x̅ = 26, N = 30, σ_X=6 Z = (X- µ)/(σ_X/√N) = (24- 26)/(6/5.4772) = (-2)/(1.0955) = 1.8257 Z = - 1.83 The z-score table notes that the area between the mean of 26 and the z-score of 1.83 = ....
June 1, 2013

Statistics
Darned old Foofy! Foofy computes the x̅ (MEAN) from data that her professor says is a random sample from population Q. she correctly computes that this mean has a z-score of +41 on the sampling distribution for population Q. Foofy claims she has proven that this could not...
June 1, 2013

Chemistry
under the same conditions of temperature and pressure , does hydrogen iodide and ammonia diffuse faster? calculate the ratio of the velocities
May 10, 2013

math
An arithmetic sequence is represented in the following table. Enter the missing term of the sequence. 10,-2,-14,-26,?...
April 16, 2013

physics
hi does someone answer you with your question?
April 7, 2013

Math
If a 6 meter pole and a 3 meter pole are connected by wires from the top to bottom, how tall is the pole touching the intersecting wires?
March 20, 2013

Math 209
THE FEDERAL DEBT D IN TRILLIONS OF DOLLARS HELD BY FOREIGN AND INTERNATIONAL INVESTORS x YEARS AFTER 1970 CAN BE MODELED BY D(x) = WHERE 15 ≤x≤ 40.
February 24, 2013

Chemistry
The half-life of C-14 is 5700 years. If it took seven half lives for a sample of C-14 to decay completely, how many years would have gone by?
January 24, 2013

Economics
Owners of digital cameras have to buy memory cards in order to use the cameras. Cameras and memory cards are: A. substitutes. B. complements C. unrelated. D. elastic.
January 16, 2013

chemistry
how many silver coins weighing 26g each would take to provide 5 moles of silver
September 19, 2012

math
Can (-x – y) (x + y) be multiplied by using the difference-of-squares formula? Explain why or why not
August 24, 2012

Economics
rent
April 12, 2012

calculus
verify that y=c/x^2 is a general solution of the differential equation y'+(2/x) y=0-6y=0 then find a particular solution of the differential equation that satisfies the side condition y(1)=2
April 10, 2012

calculus
the management of a company has decided that the level of its investment should not exceed C dollars. Furthermore, managament has decided that the rate of net investment (the rate of change of the total capital invested) should be proportional to the difference between C and ...
April 10, 2012

calculus
verify that y=C1e^2x + C2e^-3 is a solution of the differential equation y''+y'-6y=0
April 10, 2012

I really need help..(Algebra)
Solve the equation. Show your work. 3m^2=-6m
March 7, 2012

algebra
What? Retype the equation.
March 7, 2012

algebra
What do you want to do with that?
March 7, 2012

Algebra; HELP PLEASE!
Solve the equation. Show your work. 3m^2=-6m
March 7, 2012

Math; PLEASE HELP
Thank you.
March 5, 2012

Math; PLEASE HELP
Solve for x. Provide an explanation, please. -X^2+36=0
March 5, 2012

5th Grade Math
2/3-7/12
February 27, 2012

trig
refer to right triangle ABC with C = 90degrees. Given a= 2 and b=√5 Find the six trigonometric functions of A. and find the angles A and B
February 13, 2012

calculus
Given a right circular cone, you put an upside-down cone inside it so that its vertex is at the center of the base of the larger cone, and its base is parallel to the base of the larger cone. If you choose the upside-down cone to have the largest possible volume, what fraction...
January 21, 2012

Math, help needed
Kate bought 3 CDs and 1 DVD at a store. Her friend Joel bought 2 CDs and 2 DVDs. If Kate spent $20 and Joel spent $22, determine the cost of a CD and DVD. ~Please provide an explanation as well. Please and thanks!
January 19, 2012

Math.
Kate bought 3 CDs and 1 DVD at a store. Her friend Joel bought 2 CDs and 2 DVDs. If Kate spent $20 and Joel spent $22, determine the cost of a CD and DVD. ~Please provide an explanation as well. Please and thanks!
January 19, 2012

Algebra
Thank you, that helped lot. :3
January 19, 2012

Algebra
Last month, Stacie spent $57 on 4 allergy shots and 1 office visit. This month she spent $9 after 1 office visit and a refund for 2 allergy shots from her insurance company. How much does an office visit cost? An allergy shot?
January 19, 2012

trig
Find theta such as tan(theta) = cot(theta+45). Thanks
November 12, 2011

science
Ok I do it 80×8=640
November 11, 2011

science
Do I ×8 andthe80
November 11, 2011

science
Which object is it
November 11, 2011

science
What do you mean ok the Bucket has 256 fluid ounces the Punch Bowl has 240 fluid ounces and Fish Tank has 640 fluid ounces and last the Sink has 512 fluid ounces
November 11, 2011

science
What object has a capacity of exactly 80 cups. 1.Bucket 2.Punch Bowl 3.Fish Tank 4.Sink
November 11, 2011

7th math
Mary earns $8 per hour.Write an algebraic expression to evaluate how much money Mary will earn if she works for 15,20,25,or 30 hours.
May 23, 2011

physics
A .50kg ball is rolling on a frictionless surface at a speed of .75m/s. it collides with a second ball with a mass of 1kg which is also moving in the same direction as the first ball with a speed of .38m/s. After the collision the firt ball continues at a reduced speed of .35m...
March 26, 2011

math
How many ways can we select a group of 4 people from a class of 27? Please explain
March 13, 2011

science
Yes a dishwasher is a wheel and axle.
January 10, 2011

hca 250
I need an example of a pain disorder (somatoform disorder). Anyone have any suggestions?
January 5, 2011

calculus
Find the derivative using the limit process y=cox find dy/dx
November 14, 2010

HCA 230
what is America cultural viewpoint on health in regards to health as organic, health as harmonious, and disease as a curse or stigma?
October 25, 2010

algebra
thank you
October 24, 2010

algebra
or y=6?
October 24, 2010

algebra
that's what i was thinking too. haha um...6y?
October 24, 2010

algebra
-144y/-24 simplified = 6 is this correct?
October 24, 2010

6th grade
What type(s) of friction oppose the motion of a fast-moving car on a road?
October 24, 2010

HCA 230
describe different coping annd support strategies for dealing with stress related medical issues. Include the following strategies action facilitating support and nurturing support. I just need to figure out what are some stress related medical issues??
October 15, 2010

HCA 210
thank you Ms. Sue
June 27, 2010

HCA 210
what are two positive patient outcomes
June 27, 2010

HCA 210
That website wasn't much help because you have to buy something to get information.
June 21, 2010

HCA 210
I am having trouble figuring out how to write a proposal for a new health care system. Any tips on how to write a proposal?
June 21, 2010

physical science (light)
1. An object 5 millimeters high is located 15 millimeters in front of a plane mirror. How far from the mirror is the image located? A. 5.0 millimeters B. 7.5 millimeters C. 15 millimeters *** D. 30 millimeters 2. Which of the following values represents an index of refraction ...
June 10, 2010

HCA 210
this is the week 7 checkpoint
April 11, 2010

Chemistry
DrBob, for your first example should that be Al(NO3)2 or Ag(NO3)2? Because you have Al on the reactant side.
March 24, 2010

Physics
A uniformly charged sphere has a potential on its surface of 410 V. At a radial distance of 20 cm from this surface, the potential is 150 V. The Coulomb constant is 8.99 × 109 N · m2/C2.What is the radius of the sphere? Answer in units of m.
March 6, 2010

Chemistry
How much heat is required to change 10 g of ice at 0o deg C to steam at 100 deg. C?
February 23, 2010

chemistry
A 43 kg sample of water absorbs 302 kJ of heat. If the water was initially at 29.8 degree celsius, what is its final temperature? sorry about before i forgot the units.
February 5, 2010

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