Friday
July 3, 2015

Posts by tiffany


Total # Posts: 844

help math ahhhh
For questions 9–10, solve each system by elimination. 9. 5x + 4y = 1 3x – 4y = 7 (1 point) (–1, –1) (1, –1) (1, 1) 10. x + 2y = 5 3x + y = 10 (1 point) (3, –1) (1, 3) (3, 1)
January 20, 2011

algebra
The length of a rectangle is 6 cm more than four times the width. If the perimeter of the rectangle is 42 cm, what are its dimensions? a. length = 18 cm; width = 3 cm b. length = 18 cm; width = 9 cm c. length = 6 cm; width = 9 cm d. length = 3 cm; width = 18 cm
January 20, 2011

algebra
solve the system of equations using substitution. y = 2x + 5 y = 3x a. (–5, –15) b. (5, 15) c. (–15, –5) d. (1, 3)
January 20, 2011

algebra
solve the system of equations using substitution. y = x + 10 y = 3x a. (5, 15) b. (2.5, 7.5) c. (–15, –5) d. (–5, –15)
January 20, 2011

algebra
thanks
January 20, 2011

algebra
solve the system of equations using substitution. y = 3x – 4 y = 2x – 1 (1 point) a. (–2, –9) b. (1, –1) c. (1, 1) d. (3, 5)
January 20, 2011

algebra
solve the system of equations using substitution. y = 4x + 2 y = 3x + 6 a. (4, 18) b. (–4, –14) c. (–14, –4) d. (–4, –6)
January 20, 2011

algebra
Choose the compound inequality that repesents the situation. all real numbers at least –6 and at most 3 –6 >=x >= 3 –6 >=x >= 3 –6 < x < 3 –6 <=x <= 3
January 20, 2011

algebra
Choose the compound inequality that repesents the situation. all real numbers at least –6 and at most 3 –6 >x > 3 –6 >x > 3 –6 < x < 3 –6 <x < 3
January 20, 2011

bio
Discuss three types of fossils and how they are formed.
January 20, 2011

bio
Discuss how the external environment of an organism can affect gene function.
January 20, 2011

Biology
Compare and contrast the terms aerobic process and anaerobic process.
January 20, 2011

Biology
Explain the importance of carbon's ability to form covalent bonds in straight chains, branched chains, or rings.
January 20, 2011

Bio
An electromagnet can be made by wrapping insulated wire around an iron nail and connecting the ends of the wire to a 6-volt battery. HYPOTHESIS: Increasing the number of coils of wire wrapped around the nail increases the strength of the electromagnet, as measured by the ...
January 20, 2011

english
How does " an occurence at owl creek bridge" a reflection of the period of time?
January 19, 2011

asymptotes and graphing, f
graph and identify the horizontal asymptote y=7(1/4)x
January 18, 2011

English
Write 5 sentences about the role of education in successful financial planning, in which you correctly use a different verb tense in each. 1. Education "is very" (simple present tense) important in your critical role for financial success. 2. I'm "trying&...
January 16, 2011

Math
Suppose you earn $7 per hour The number of hours you work (input) determines your pay (output) i need the inputs and outputs
December 19, 2010

Math
complete the pattern 3 8 13 18 23 what three numbers come next?
December 16, 2010

prob. statistics
a survey indicates that 41% of women in the us consider reading as their favorite leisure time activity. you randomly select 4 women and ask them if reading is their favorite leisure time activity. find the probability that exactly 2 of them said yes
December 13, 2010

chemistry
there is 4.5 grams of acetic acid in 100 ml of water. how many moles of acetic acid is that?
December 13, 2010

Math
78
December 13, 2010

child care
thanks bobpursley ok 6 is not b so i think is a? and 20 if its 25-30% its b?
December 13, 2010

Please check answers/ childcare
thanks bobpursley ok 6 is not b so i think is a? and 20 if its 25-30% its b?
December 12, 2010

Please check answers/ childcare
thanks bobpursley ok 6 is not b so i think is a? and 20 if its 25-30% its b?
December 12, 2010

Please check answers/ childcare
hello i need someone to check these for me? 6) alcohol,drugs,radiation,and pollutants that affect a child development are called a.teratogens b.toxic inhibitors c.tranferal agents. d.phenylanines 10) monstrates an inability to leap over a barrier, his teacher checks to see if ...
December 12, 2010

child care
hello i need someone to check these for me? 6) alcohol,drugs,radiation,and pollutants that affect a child development are called a.teratogens b.toxic inhibitors c.tranferal agents. d.phenylanines 10) monstrates an inability to leap over a barrier, his teacher checks to see if ...
December 12, 2010

Childcare Manegment /please chech answers
hello i need someone to check these for me? 6) alcohol,drugs,radiation,and pollutants that affect a child development are called a.teratogens b.toxic inhibitors c.tranferal agents. d.phenylanines 10) monstrates an inability to leap over a barrier, his teacher checks to see if ...
December 11, 2010

can you please check my answers
1) A strategy for health promotion among infants toddlers and young children focuses on educational programs physical fitness activities and a. family planning b.tobacco,alcohol, and drug use. c.Nutrition. d.mental health & menta disorders. 2)The main goal of effective health...
December 11, 2010

chemistry
After writing a balanced equation for the reaction between magnesium and hydrochloric acid, calculate the mass of magnesium needed to produce 90ml of hydrogen gas @ STP conditions.
December 9, 2010

General Physic
The time it takes for an object dropped from the top of cliff A to hit the water in the lake below is twice the time it takes for another object dropped from the top of cliff B to reach the lake. If it takes 2.30 s for the object to fall from cliff A to the water, what are the...
December 5, 2010

english (Frederick Douglass)
Whatis the most important description of Mr. Gore?
December 4, 2010

english (Frederick Douglass)
Why do you think Douglass says of the killing of slave Demby ‘in an instant poor Demby was no more. His mangled body sank out of sight, and blood and brains marked the water where he stood.”?
December 4, 2010

sociology
Im in Illinois and Yes its the same book Chapter 12 pg 365... Im so lost and dont know where to start. From Rasmussen as well. LOL
December 3, 2010

history
How did the settlement house movement differ from earlier attempts to relieve poverty?
December 2, 2010

history
in the 1800s
December 2, 2010

history
How did professionalization meet the needs of the developing American economy In the urban life?
December 2, 2010

childcare
ok thanks
November 30, 2010

childcare
its for my homework
November 30, 2010

childcare
exam 00383001 need help withj 5 questions
November 30, 2010

childcare
thanks :O)
November 30, 2010

English (Grade 6)
What is the best website to practice direct and indirect speech, adjectives and verbs for free? Thank you
November 29, 2010

physics
When a woman runs 140 meters north and then 60 meters west, what is the magnitude of her total displacement?
November 27, 2010

Physics
How does progress today differ from progress thousands of years ago?
November 24, 2010

MATH
3 OUT OF EVERY 4 STUDENT HAVE A COMPUTER AT HOME IF THERE ARE80 STUDENTS HOW MANY HAVE COMPUTERS AT HOME
November 22, 2010

MATH
IN A CLASS 3 OUT OF EVERY 7 STUDENT ARE MALES IF THERE ARE 27 MALES HOW MANY STUDENT ARE IN THE CLASS
November 22, 2010

12th Grade Government
Why was it important to the Founding Fathers to justify their actions by evoking traditional English rights?
November 22, 2010

12th Grade Government
_____ believed that there should be no limits to the power of the government once the will of the people was determined.
November 22, 2010

physics
Suppose I have a spring. I add a mass (m = 1.0 kg) and it is displaced by 15 cm. What is the spring constant k in units of (N/m)?
November 18, 2010

Accounting
Need help with this bank reconciliation...this is actually for a job and I am forgetting everything about accounting because I am nervous. BANK RECONCILATION ============================================== On Aug 14th, One of our Partner's ( Compuville ) cash book showed a ...
November 17, 2010

algebra
Use muliplying by 1 to find an expression equivalent to 10/13 with a dominator of 39a Please kindly help. I don't understand what to do. Thanks!
November 14, 2010

math116
-8x-27=-32 1/5 the solution must be in the form as an integer or simplified fraction. Thank you.
November 12, 2010

PHYSICS ---HELP!
A patient is to be given a blood transfusion. The blood is to flow through a tube from a raised bottle to a needle inserted in the vein . The inside diameter of the 4.8 cm long needle is 0.48 mm, and the required flow rate is 4.9 cm/3 of blood per minute. How high should the ...
November 12, 2010

physics
Blood from an animal is placed in a bottle 2.0 m above a 3.4 cm long needle, of inside diameter 0.35 mm, from which it flows at a rate of 2.9 cm^3/min. What is the viscosity of this blood? Assume Pblood}=1.05 * 10^3 kg/m^3.
November 11, 2010

chemistry
a 5% acetic acid solution contains -----grams of acetic acid per ------
November 11, 2010

College Algebra
USE MULTIPLICATION PRINCIPLE - X/2 = 8 X=_________ I APPRECIATE THE HELP!
November 8, 2010

math
complete the order triple 8x-y+z=22, 4x+2y-3z=13, x-3y+2x=-6
November 7, 2010

Alg & Trig 2
find the sum of 1/2, 2/7x, and 5/x
November 5, 2010

Alg & Trig 2
find the sum of 1/2, 2/7x, and 5/x
November 5, 2010

intro chem HELp please
Jizz
November 5, 2010

Chemistry
Calculate the enthalpy change in kJ when 21.6g of H2S is burned. 2H2S(g) + 3O2(g) --> 2SO2(g) + 2H20(g) Change in H=-1036kJ/mol
October 31, 2010

Business
Which economic system is the best solution to handling a crisis of epic proportion?
October 29, 2010

Physics Help!!
Hurricanes can involve winds in excess of 120 km/h at the outer edge. Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg*m^3 of radius 120 km and height 4.5 km. Make a crude estimate of the ...
October 26, 2010

science
Which of the following chemical reactions is written to show that mass is conserved? A H2O to H2+O2 B CH4+202 to CO2+2H2O C Mg+HCI to 3MgCI0+H2 D N2+H2 to NH
October 26, 2010

Physics
A 3.6 m diameter merry-go-round is rotating freely with an angular velocity of 0.78 rad/s. Its total moment of inertia is 1700 kg m^2. Four people standing on the ground, each of mass 62 kg, suddenly step onto the edge of the merry-go-round. What is the angular velocity of the...
October 26, 2010

English
Idententify the sentence parts - Whose car did the parking attendant tow yesterday?
October 25, 2010

phsics
for this you just take the inverse tan of .4 and will get theta.
October 24, 2010

consumer math
$400.OO
October 20, 2010

Finance
what is the present value of 1000 paid at the end of each of the next 100 years if the interest rate is 7% per year
October 17, 2010

College Algebra and Trig
a rancher has 12,000 feet of fence to enclose 5 adjacent pens. determine the outer rectangular dimensions that result the maximum enclosed area.
October 14, 2010

math
Erica took 2 days to drive 1,020 miles. On the first day she drove 10 hours at an average spped of 62 mile per hour. on the second day, her average spped was 57 miles per hour. approx. how long did she drive on the 2nd day?
October 11, 2010

geometry
A manufacturer wants to make a rectangular storage box with volume 0.75 cubic meters, length 1.5 meters and width 0.4 meters. What is the height of the box?
October 11, 2010

math
the coordinates of triangle KLM are K(-2,-5), L(0,1), M(6,-2) What type of triangle is KLM? A) obtuse isosceles B) acute scalene C) right isosceles D) right scalene
October 11, 2010

GEOMETRY
Alicia is 5ft tall. she casts a shadow that measures 6 1/2 feet long at the same time that a sculpture in the park casts a shadow 12 ft long. which of the following is the approximate height of the sculpture? a) 2.0 miles b) 6.6 miles c) 12 miles d) 15.6 miles
October 11, 2010

Ohlone
6moles
October 7, 2010

math
how do you find the function of the domaine
October 5, 2010

Chem.
Suppose that 55 mL of 0.2 M LiOH and 55 mL of 0.3 M HNO2 are mixed. What is the K for the dominant equilibrium in terms of Ka's, Kb's, Kw etc.?
October 4, 2010

Chemistry
NH4+ OH-=NH3+H20
October 4, 2010

Chemistry
NH4+ + OH- NH3 + H2O What is the K for the reaction above in terms of Ka's, Kb's, Kw etc.?
October 4, 2010

Psychology
What different tools of psychology help us with work and everyday life situations?
October 3, 2010

Chemistry
Calculate the solubility of LaF3 in grams per liter in the following solutions. The Ksp of LaF3 is 2.01 e-19. (a) pure water (b) 0.051 M KF solution (c) 0.065 M LaCl3 solution
October 1, 2010

physics
Your groceries are in a bag with paper handles. The handles will tear off if a force greater than 59 N is applied to them. (a) What is the greatest mass of groceries that can be lifted safely with this bag, given that the bag is raised with constant speed? kg (b) What if it is...
September 30, 2010

reading
see Marjorie's personality as shallow
September 28, 2010

math
-2(-5+2)-3(3-4)-5
September 25, 2010

math
on a single day the temperature in alaska dropped from a high of -12 f to a low of -50. what os the difference between the high and low temperatures
September 25, 2010

Chemistry
3H2(g)+N2(g)=2NH3(g) Suppose the equilibrium constant Kp = 0.003337 for the reaction above. If the equilibrium mixture contains partial pressures H2 = 0.400 atm and N2 = 0.350 atm. What is the equilibrium partial pressure of NH3 in atm?
September 23, 2010

physics
A brick is thrown upward from the top of a building at an angle of 25° to the horizontal and with an initial speed of 17 m/s. If the brick is in flight for 2.5 s, how tall is the building?
September 20, 2010

Algebra
how do you factor 4c^3-500 ?
September 11, 2010

art
please help me pick a favorite harlem Renaissance name of the picture date/time material used. and used for and symbolism
September 11, 2010

college art
please help me pick a favorite harlem Renaissance name of the picture date/time material used. and used for and symbolism
September 11, 2010

physics
A truck covers 40.0 m in 8.60 s while smoothly slowing down to a final velocity of 2.00 m/s. (a) Find the truck's original speed. (b) Find its acceleration.
September 10, 2010

Chemistry
Some physical properties of water are shown below. freezing point 0.00°C boiling point 100.00°C Kf 1.86°C/m Kb 0.512°C/m A 16.0 g sample of a compound known to contain 3 ion species is dissolved in 100. g of water. The boiling point of the solution is 103.6°...
September 9, 2010

Chemistry
If you are making 430.0 g of 0.41 m Na2SO3, how many grams of the solute should you use? I got 20 grams, but I don't think this is the right answer.
September 8, 2010

math
There are about 9ft per yard
September 6, 2010

math
Area= 2(L+W)
September 6, 2010

Grammar
Thank you
September 6, 2010

Grammar
(Check these please)Identify these sentences as compound, simple or run-on sentences. 5. Percy Shelley traveled in Europe and visited friends.(simple) 6. Shelley made friends with other poets; John Keats was Shelley's friend.(compound) 7. William Godwin was another friend...
September 6, 2010

chemistry
Which of the following are solutions? Choose all that apply. (Note: do not pick heterogeneous systems that contain a homogeneous phase.) - Cold coffee or cold tea. -Cigarette smoke. - Tap water. - Milk. - Fog. - The air typically found in a room. - Pure water.
September 6, 2010

chemistry
11:54Am
September 3, 2010

Grammar
Thank you
August 30, 2010

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