Sunday
December 4, 2016

Posts by sara

Total # Posts: 4,385

Maths
A number consists of two digits.THe digit in tens place is twice that in units place.if 18 is subtracted from the number. The digits are reversed.find the number.
December 4, 2016

Maths
divide 1000 among a,b,c in such a way that a gets 120 more than b and b gets rs 110 more than c .hw much each get
December 4, 2016

Maths
50 divided into two parts such that if 6 is subtracted from one part , 12 is added to the second part we get same number .
December 2, 2016

math
The radioactive decay of a substance is expressed by A=A^0 e^ -kt, where the initial amount A^0, decays to an amount A after t years. The positive constant k differs for each substance. Strontium 90 decays such that k=.028. Find out how much of 1,000 mg of strontium 90 remains...
December 1, 2016

chemistry
why is the spectrum of hydrogen composed of discrete lines?
November 29, 2016

Math
The figure below shows two triangles. Which statement about the triangles is true? i.imgsafe(.)org/c60dcd0488(.)jpg The triangles can be proven congruent by: 1. Angle angle side <<< 2. Angle side angle 3. Side angle side 4. The triangles cannot be proven congruent
November 28, 2016

Algebra
Chandra has 2 liters of a 14% solution of sodium hydroxide in a container. What is the amount and concentration of sodium hydroxide solution she must add to this in order to end up with 7 liters of a 34% solution?
November 28, 2016

algebra
Shari drove for 90 miles in the city. When she got on the highway, she increased her speed by 20 mph and drove for 130 miles. If Shari drove a total of 4 hours, how fast did she drive in the city?
November 27, 2016

algebra
Bob needs to wash the windows on his house. He has a 25-foot ladder and places the base of the ladder 10 feet from the wall on the house. How far up the wall will the ladder reach?
November 27, 2016

math
Solve the quadratic equation, 2 x2 - 5 x+3
November 27, 2016

Math (please check my answer!!)
What other information is needed to prove that the two triangles congruent by SAS? Picture description: there are two triangles showing line LT = line MQ and L=M A. <T = <Q B. <G = <N C. Line GT = line NQ << D. Line LG = line MN
November 22, 2016

Biology (please help!!)
Explain the process that takes place in the stroma including and reactants going in nd the products produced from these processes in a. bright sunlight and in b. darkness. c. what happens over an extended period of darkness of many days? What I need to know is part C.. I have ...
November 21, 2016

math
Can you please help with finding rate of change in graphing? One question has times: 0 15 23 30 35 distance:30 70 0 45 60 Can you help me get started, I don't know what to do? Also, in another question for the slope I have to find which line has greatest absolute value ? ...
November 20, 2016

Government
What is the role of joint chiefs of staff? A.To serve as objective military advisors B.To manage the executive office of the president << C.To lead the department of Defense << D.To lead the state Department I'm not sure if it's B or C, I do lean more ...
November 18, 2016

math
Estimating the product of a decimal and a whole number what is 8.02 x 70
November 17, 2016

math
What is the estimated answer of 0.97x312
November 17, 2016

Physics
Suppose your car was mired deeply in the mud and you wanted to use the method illustrated in the figure to pull it out. (a) What force in newtons would you have to exert perpendicular to the center of a rope to produce a force of 10,000 N on the car if the angle is 1.80°? ...
November 7, 2016

MATH
If y varies inversely with x and y = 8 when x = 5, then what is y when x = 2? 4 6 10 20
November 5, 2016

Math
A store buys shirts for $12 each and marks up the price by 25%. What is the price for a shirt at this store?
November 1, 2016

Math
V varies inversely with T and V = 12 when T = 6. Which equation shows this relationship? V = 2T V = 72T--- My Answer v=2/T V=72/T
October 27, 2016

Algebra
f(x) varies inversely with x and f(x) = –10 when x = 20. What is the inverse variation equation?
October 27, 2016

math
12.75 x 8.25
October 24, 2016

Math
Which equation(s) represents a proportional relationship? A) y = 5 + x B) y = 4x C) y = 7x² D) y = 2 - x
October 21, 2016

Math
What integer represent a debt of 12$
October 20, 2016

MATH
Suppose an object moves along the x-axis so that its position at time $t$ is $x=-t+\frac{t^3}{6}$. (a) Find the velocity, $v(t)=x(t)$, of the object. (b) What is $v(0)$? What does this say about the direction of motion of the object at time $t=0$? (c) When is the object at the...
October 20, 2016

math
The formula of a trapezoid is A=1/2h(b1+b2) Express b1 in terms of A,h,and b2 I did A=1/2hb1+1/2hb2 A=hb1/2 +hb2/2 A-hb2(2/h)=hb1/2(2/h) A-b2=b1 I am not sure if this is correct? I was confused on how to do this. Any help or explanation is greatly appreciated. Thank you.
October 4, 2016

History
I was wondering how I use citation for a website?
October 4, 2016

English
1. Choose the answer that best matches the word in italics. Samantha tried to look IMPASSIVE when they announced her essay as a finalist in the competition.  (1 point) surprised unemotional*** unsure vibrant 2.   Choose the answer that best matches the word...
September 29, 2016

science
its A
September 29, 2016

Physics
Pls send the answers
September 29, 2016

Civics
I need an example of two Statute laws. I know what it means but I don't know any laws.
September 28, 2016

polynomials
Thank you for explaining my mistake.
September 25, 2016

polynomials
I have to simplify (-x^5y^4)^4(3x^2y)^2(1/3xy) I did (x^20y^16)(9x^4y^2)(1/3xy) (9x^24y^18)(1/3xy) 3x^25y^19 Is this correct? Thank you for your help!
September 25, 2016

algebra
5/x-3/4x=23/x+6 first I made it 20/4x-3/4x=23/x+6 Then I am stuck how to solve the rest of the equation Can you please help. Thank you
September 21, 2016

Math
Carly and Kyle decided to count the number of red, blue, and yellow cars that they saw. They counted twice as many red cars as blue cars. The number of yellow cars they counted was one third of the number of red cars if they counted a tote of 33 cars. How many of each car did ...
September 19, 2016

Social studies
1. Clock maker gun maker and wheat maker 2. B 3. B and c
September 14, 2016

Math
2√2 (3√8 - √6) For my answer I got 24 - 2√12, would this be correct? I'm not sure if I simplified incorrectly.
September 13, 2016

Chemistry
I actually found the answer. The answer is 83 grams. You must convert the values accordingly. oz to grams, Fahrenheit to Celsius. You calculate the heat lost by the drink first. This is the setup: =(368.544g)(4.18J/gC)(-17.7778C) the change in temp is found by first converting...
September 13, 2016

Chemistry
When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 13.0 oz drink from 71 ∘F to 39 ∘F, if the heat capacity of the drink is 4.18 J/g∘C? (Assume that the heat transfer is 100 % efficient.)
September 13, 2016

Physics
Ho can I calculate the volume of a CD that is 0.75 mm thick has outer diameter of 128 mm and inner diameter of 15 mm.
September 4, 2016

College Algebra
At a basketball game a vendor sold a combined total of 196 sodas and hotdogs. The number of sodas was 48 more than the number of hotdogs sold
September 1, 2016

chemistry
A solution is made by mixing 25 mL of .35 M LiOH with 15.5 mL of .2225 M NH3. Kb=1.8x10^-5 for NH3 Calculate the pH for the solution.
August 25, 2016

perfect number
I need please!!!!
August 16, 2016

perfect number
Yes i need soon for my activity
August 16, 2016

perfect number
I need two perfect numbers. For my activity,I should submit it tomorrow please help me. I need now. Please
August 16, 2016

Maths
An industrial fertilizer costing $370 per tonne to produce is sold retail 61 cents per kilogram.If there is a wastage of 2.5%,find the profit as a percentage of the cost?
June 29, 2016

Abnormal Psychology
GAD
June 27, 2016

Math
Sara was mixing punch for a party from a recipe that calls for 3 parts ginger ale mixed with 2 parts pineapple juice. She graphed the people served compared to the total mixture. Use the point shown on her graph to compute the ginger ale need to serve 20 people.
June 24, 2016

math
if you make guesses for four multiple-choice test questions (each with five possible answers), what is the probability of getting at least one correct?
June 23, 2016

Chemistry
Prepare M/20 oxalic acid solution.Using this solution, find molarity, strength, and percentage purity of the sodium hydroxide solution.
June 13, 2016

English
Option 3 is the Best Answer according to me. Trust me, I am a School Topper in Emirates English Speaking School, Dubai, UAE. Even though others are grammatical enough, most teachers have Option 3 in mind.
June 13, 2016

english
thank you!
May 29, 2016

english
What parts of grammar are the words? Yesterday is history. Tomorrow is a mystery. Today is a gift, which is why we call it the present. Yesterday? Tomorrow? gift? call? it? present? My brother was discharged and will follow up next week. My? will follow up?
May 29, 2016

English
I agree on that one. C.
May 28, 2016

Math
Thanks!!! <3
May 22, 2016

Math
Form the perfect square trinomial in the process of completing the square. What is the value of c? x^2 + 3x + c = 7/4 + c c =
May 22, 2016

Math
Say that you (or your parents) are purchasing a used car for $22,350. The sales tax is 7.5%, the down payment is $1,200.00, and you have an average credit rating. If your first payment is $475.25, how much of the payment goes toward the principal? The average rating is 5.85. ...
May 21, 2016

ELA
Identify the type of clause that is underlined in the following sentence. In this game, whoever gets the fewest whoever gets the fewest points wins. whoever gets the fewest points is underlined
May 11, 2016

finance
Jiminy's Cricket Farm issued a 30-year, 7.2 percent semiannual bond 9 years ago. The bond currently sells for 85.5 percent of its face value. The book value of this debt issue is $107 million. In addition, the company has a second debt issue, a zero coupon bond with 12 ...
May 9, 2016

math
thank you so much!
May 9, 2016

math
I asked this yesterday and didn't get a response. I know it is difficult since you can't see the picture on my homework. Can you tell me if I started correctly and used the correct formula for surface area of a triangular prism? Is there a way to post a pic to help ...
May 9, 2016

geometry (please help)
IMG_7042.JPG I tried to take a pic of the image. Hope it shows because I really need help. Thank you
May 8, 2016

geometry (please help)
Is there a way to post a pic to help explain this? (I will try and explain the triangular prism. it has a 90 angle. the long end of the triangle is 13.5 in. One side is 10 in and the other side of the triangle is 9 in. the side coming down from the triangle making the prisms ...
May 8, 2016

math- geometry
no, the 1 m is not the area of the shaded portion. there is a dotted line across the shaded part and ending at the outer part of the glass. the dotted part is 1 m. that is why I felt if you added that part to the radius of the glass, it would give the radius of the circular ...
May 5, 2016

math- geometry
the shaded area(I mean portion, not the area as in the equation.) shows the distance of the shaded part=1m, . They put that there so you can add that piece onto 1/2m (radius of the inside circle) and together it gives you the radius of the full circle. How did you get the ...
May 5, 2016

math- geometry
I will try and explain this since I can't draw the picture that went with this question. A circular glass overlay was placed on the top of a circular table. Find the area of the shaded region, rounding to the nearest tenth. The shaded region is the part of the table ...
May 5, 2016

geography/social studies
thanks!
May 3, 2016

geography/social studies
one more question: what challenges does russia face as it finds its place in today's world?
May 3, 2016

geography/social studies
PLEASE HELP ME if you were an entrepreneur, which european country might be the best place to start your new business? explain your reasoning
May 3, 2016

social studies
Italy surrounds San marino. So C is the answer.
May 3, 2016

Science
Which of the following statements is true about Earth's magnetic poles? A.They are located at earths geographic poles B.They are the areas where Earths magnetic field is weakest. C. They are the areas where Earths magneic field is strongest. D. Earth has one dominant ...
April 27, 2016

Finance
If your bank pays an annual interest rate of 1.5% of balance exceeds $750 and it averages $815 but it falls below $750 for 4 months do you get the other 8 months interest or you get none because of the 4 months it fell below?
April 24, 2016

math
which pair of expressions are equivalent A 4(6X) and 10X B 4(6X) and 24X C 4X + 6X and 10 XX D 4X + 6X and 24X
April 23, 2016

chemistry
Aqueous sodium sulfate reacts with aqueous barium chloride to produce solid barium sulfate and aqueous sodium chloride. the solution contains 3.44g of barium chloride. you have a 0.282M solution of sodium sulfate. determine the volume of the sodium sulfate solution necessary ...
April 17, 2016

chemistry
what is the concentration of 24.5g of Ca(NO3)2 in 244mL of water
April 16, 2016

chemistry
how do i figure out the dilutions of 1.5L of a 15.0% (v/v) NaCl/water solution, what would the concentration of NaCl be if you added 3.0L of water
April 15, 2016

Translating a sentence into a one-step equation
Six more than the product of 8 and Gail's savings
April 15, 2016

U.S history
Compare and contrast the US involvement in the korean and the Vietnam war. Include two similarities and two differences. Can someone please please help me? I honestly remember nothing about these wars.
April 12, 2016

Writing
I need an amazing title that rhymes and includes the name Garza.... Same Thing with the name Coffee #i want these name to stand out as a title
April 11, 2016

Pre-Algebra
which of the following describes a situation in which a data set with a low mean absolute deviation is preferable? A. a car dealership sells cars at different prices B. a factory manufactures computers of different sizes and shapes. C. a food processing plant fills each can ...
April 11, 2016

Math
Your answer... It's like an interview
April 9, 2016

Math
When did you first start a saving plan? What is the purpose of the saving plan? How will having a saving plan benefit someone?
April 9, 2016

Physics
A 2.30 kg block is initially at rest on a horizontal surface. A horizontal force ModifyingAbove Upper F With right-arrow of magnitude 4.92 N and a vertical force ModifyingAbove Upper P With right-arrow are then applied to the block (see the figure). The coefficients of ...
April 7, 2016

math
Thank you for your help
April 6, 2016

math
what is the value of -3/4-(3/-8) (the 3/4 fraction only has the - on the 3, not the entire fraction) a -1 1/8 B -3/8 C3/8 D 1 1/8 What I did is first find a common denominator making the equation -6/8-(3/-8)= -9/16 this is not one of the choices Can you please help. Thank you
April 6, 2016

physics
When is the kinetic energy equal to zero?
April 5, 2016

chem.
The combustion of a polymer gives only carbon dioxide and water. Its average molar mass is 10500g/mol and its degree of polymerization is 2500. Determine the molar mass the formula and the name of the monomer. Draw the formula of the polymer what is its name. Thanks.
April 4, 2016

math
Thank you, I know I didn't know what symbol to use for absolute value, that is why I said I did the absolute value of..., but what are they asking for in the second part when asking What conclusion can you make from the mad value you found? I am not sure what they want. ...
April 2, 2016

math
can you please check my work. The time in minutes that it took five students to complete the math test was 45, 27, 30, 25, and 48. What is the mean absolute deviation of the times? I did 25+27+30+45+48= 175 then I divided it by the 5 students. 175/5= 35 so now I did the ...
April 2, 2016

Physics
A block is projected up a frictionless inclined plane with initial speed v0 = 2.19 m/s. The angle of incline is θ = 25.1°. (a) How far up the plane does it go? (b) How long does it take to get there? (c) What is its speed when it gets back to the bottom?
March 31, 2016

Physics
Three astronauts, propelled by jet backpacks, push and guide a 118 kg asteroid toward a processing dock, exerting the forces shown in the figure, with F1 = 32 N, F2 = 56 N, F3 = 38 N, θ1 = 30°, and θ3 = 60°. What is the (a) magnitude and (b) angle (measured ...
March 31, 2016

1st math
How far does the minute hand move in an hour?
March 28, 2016

math
sorry composition is actually supposed to be consumption
March 22, 2016

math
Which car is the cheapest to run?Explain why. Bill's car: average fuel composition 20 miles per gallon Sue's car: average fuel composition 30 miles per gallon Fred's car: average fuel composition 40 miles per gallon I think the answer is Fred because his car can ...
March 22, 2016

Math
At a hockey game, a vender sold a combined total of sodas and hot dogs. The number of sodas sold was three times the number of hot dogs sold. Find the number of sodas and the number of hot dogs sold.
March 19, 2016

Phys
A pendulum is constructed of a mass m connected to a mass ess rigid rod of lengthl. As shownin the figure, the other end of the rodis suspended from a point on the ring ofradius R. The pendulum is free to swing in a vertical plane that is also the plane of the ring. The ring ...
March 13, 2016

Statistics
In a prior sample of U.S. adults, the Center for Disease Control (CDC), found that 10% of the people in this sample had pinworm but the margin of error for the population estimate was too large. They want an estimate that is in error by no more than 1.5 percentage points at ...
March 11, 2016

Statistics
Suppose you draw a card from a deck (with replacement) 10 times in a row. What is the probability that you get exactly 3 hearts? Round your answer to 3 decimal places.
March 11, 2016

english composition 11
all of the following are techniques of active reading except
March 10, 2016

English
B?
March 8, 2016

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