Saturday

August 27, 2016
Number of results: 22,223

**math**

draw a square on the graph paper whose each side of the length 5 centimetre and then make partition of the square into 25 small squares as soon in figure 1.1 each square is small square have its height and length 1 centimetre
*July 23, 2015 by rohit*

**Math**

What is the mean proportional between 5 and 21? It is the square root of 5x21, which is 10.24695... Note that 10.24695/5 = 21/10.24695. That is why it is called the proportional mean. The ratios to the higher and lower number are the same
*January 26, 2007 by Antonio*

**HS Calculus**

Definition of the derivative to calculate f'(x) if f(x) = square root 2x. Find the equation of the tangent & normal line to the graph of f at x=2. Tangent line - y=2x-x Normal line - y = 1/2x +3 I do not know whether these are the correct answers.
*November 25, 2008 by jane*

**Trigonometry**

Hi, I really need help in understanding how to solve trig equations. How do you solve this equation? Solve the equation on the interval 0 < or equal to x < or equal to 2pi. sinx = (square root of 3)/2 I appreciate your help. Thank you!
*March 17, 2013 by Leah*

**Psy 230**

The text for this class is strange to read and about clear as mud. The question that I am needing help with is this one: Rotter's social-learning theory state that over time, a behavior and a reinforcer (a consequence) become so closely associated that a person can come to ...
*October 21, 2012 by Marie*

**Psy 230**

The text for this class is strange to read and about clear as mud. The question that I am needing help with is this one: Rotter's social-learning theory state that over time, a behavior and a reinforcer (a consequence) become so closely associated that a person can come to ...
*October 21, 2012 by Marie*

**Chemistry**

True or False? 1) Do Nuclear changes generally absorb more energy than chemical changes. 2) In Exothermic reactions, the reactants have more kinetic energy than the products. 3) If one molecule is involved the rate determining step is called first order. Is it 1)F 2)F 3)T ...
*July 24, 2010 by Christian*

**algebra**

if x.y=30 and x+y=10.3, what is x? i been told by my teacher to use quadratic formula , and him and i did it , we end up having , x1=-5.15-5.89i and x2=-5.15+5.89i, y1=30/(-5.15-5.89i) and y2=30/(-5.15+5.89i).and he told to go from there, but i cant get final answe. as you ...
*September 20, 2010 by layth*

**trig**

what are the values of theta in the interval 0 degrees is lessthan or equal to theta is less than or equal to 360 degrees that satisfy the equation tan theta minus square root of 3 equals 0?
*May 15, 2011 by jacquelinemelody*

**MATH**

Thanks for the answers but I must show the work for each problem. Can someone please help now that I finally submitted the square root correctly,thanks to drwls, and Ms. Sue. Thank you The slash (/) line represents that the number is a fraction. divide: sqrt45 / sqrt81 = ...
*October 29, 2011 by PLEASE HELP*

**Math**

1. 5/ 8+root 7 A. 5/57 B. 5 root 7 /15 C. 5- root 7/8 D. 40- 5 root 7/ 57 My answer I had two was not sure A and D . 2. An object 8.1 feet tall casts a shadow that is 24.3 feet long. How long in feet would the shadow be for an object which is 17.4 feet tall? A. 1.2 feet B. 5.8...
*August 22, 2013 by Queta*

**English**

Which of the following did NOT contribute to the Harlem Renaissance? A.The Emancipation Proclamation. B. By 1930, the population of African Americans in Harlem grew to over 200,000. <-- C.F. Scott Fitzgerald All Harlem Renaissance writers wrote literature about suffering, ...
*February 26, 2016 by Kelly*

**english**

Which of the following did NOT contribute to the Harlem Renaissance? A.The Emancipation Proclamation. B. By 1930, the population of African Americans in Harlem grew to over 200,000. C.F. Scott Fitzgerald <-- All Harlem Renaissance writers wrote literature about suffering, ...
*February 26, 2016 by Kelly*

**Chemistry**

Calculate the pH of a 100mL solution of 0.10M acetic acid ka=1.8x10(-5) i calculated the pH to be 2.87 from the square root of (1.8x10(-5) * 0.1, the negative log gives me the pH. The next question wants you to calculate the pH with 50mL HCl added. I found the pH to be 2.78 by...
*October 25, 2011 by Kevin*

**Math**

Use linear approximation, i.e. the tangent line, to approximate cube root of 27.05 as follows. Let f(x) = cube root of x and find the equation of the tangent line to f(x) at x = 27 in the form y = mx+b. Note: The values of m and b are rational numbers which can be computed by ...
*December 19, 2014 by Maxime*

**Algebra**

Let x, y, and z be positive numbers. What is the fourth root of the expression: 16x^8 * y^4 * z^16 What is a "fourth root"? Thank you! :-)
*March 18, 2009 by Cassie*

**algebra**

According to the rational root theorem, which is not a possible rational root of x3 + 8x2 x 6 = 0?
*January 10, 2011 by Zac*

**Math**

Is the simplified form of 2square root of 3 − 2square root of 3 rational Yes or No
*November 4, 2015 by Lucy*

**MATH**

Is the simplified form of 2square root of 3 − 2square root of 3 rational? Yes or no
*November 4, 2015 by Marie*

**Math**

Is the simplified form of 2square root of 3 ⋅ 2square root of 6 rational Yes or No
*November 4, 2015 by Gracie*

**Math**

Is the simplified form of 2square root of 3 ⋅ 2square root of 6 rational? Yes or No
*November 5, 2015 by Katie*

**statistics**

The p value is the: a. probability with which a test statistic would occur if the research hypothesis were true. b. probability with which a test statistic would occur if the null hypothesis were true. c. cutoff probability at which a test statistic is considered extreme. d. ...
*October 20, 2014 by mark*

**statistics**

The p value is the: a. probability with which a test statistic would occur if the research hypothesis were true. b. probability with which a test statistic would occur if the null hypothesis were true. c. cutoff probability at which a test statistic is considered extreme. d. ...
*October 21, 2014 by sue*

**Calculus**

What would the limit be for the following problems? lim (square root (x+3)) x--> 1 I thought it would be 1.4 lim (1/x) x--> 7 I thought it would be 0 or .1 but neither of those show to be correct. Thank you!
*August 22, 2015 by Serena*

**Anthropology Quiz**

1. The hydraulic theory of state formation is: (Points : 1) polities conquer societies which have irrigation. polities with irrigation systems conquer smaller political units. centralized government is necessary to organize and maintain irrigation systems. state authorities ...
*November 13, 2011 by Rabia *

**Physics**

A square, 0.69 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. This axis is perpendicular to the plane of the square. A force of 17.1 N lies in this plane and is applied to the square. What is the magnitude of the ...
*November 13, 2010 by Mike*

**Physics**

A square, 0.52 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. This axis is perpendicular to the plane of the square. A force of 15.0 N lies in this plane and is applied to the square. What is the magnitude of the ...
*November 15, 2010 by Bella*

**physics**

A square, 0.52 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. This axis is perpendicular to the plane of the square. A force of 15.0 N lies in this plane and is applied to the square. What is the magnitude of the ...
*November 15, 2010 by Bella*

**algebra 1**

a diagram below shows an artistic design,] if the length of the outer square is 12" and the length of the inner square is 7" what is the area of the remaining glass when the smaller square is cut form the larger square? well i multiplied 12*12 and 7*7 that gives me 144 and 49 ...
*April 16, 2013 by li*

**math**

Jana is going to install ceramic tiles in her kitchen. It measures 13' 3" by 12' 6". How many square feet of tile does Jana need? a.) 142.38 square feet b.) 143 square feet c.) 140.625 square feet Can you please show me how you got your answer
*March 13, 2014 by kp*

**Environmental science B**

1.(1 point) The increase in use of electricity and oil as well as the expectation that dependency on foreign oil will ______ over the next ten years has lead to the restructuring of current energy policies. Double**** Triple Decrease Stay the same 2.(1 point) Which of the ...
*February 9, 2016 by Patty*

**Grammar**

Form Questions: 1/ I went to london last year. When.............? Answer: when did go I to london? 2/ She bought a new car. What.............? Answer: what did she buy? 3/ he visited his uncle . Who.............. ? Answer: who did he visit? 4/ I did my homework an hour ago. ...
*October 12, 2014 by Nina*

**Chem**

Calculate the [NH4+] in solution that is 0.25 M NH3 and 0.20 M NaOH. (Kb for NH3 = 1.8 x 10-5) I set up ICE from the equation: NH3 + H20 ------NH4 + OH- I 0.25 0 0 C -x +x +x E 0.25-x x x 1.8 *10^-5 = x*x/ 0.25-x 4.5* 10^-6 = x2 took the square root to get: 2.12 * 10^-3 =x but...
*April 6, 2010 by AMI*

**vector**

the imaginary i or j which is equivalent to square root of -1 has a phase difference of ____ with real number 1. what's the answer? choices are: a.)0 degrees, along or within the force b.)90 degrees c.)360 degrees, one complete revolution d.)180 degrees e.)45 degrees, ...
*August 26, 2015 by reece*

**Stat**

PLEASE CHECK AND SEE IF I HAVE THESE ANSWERS CORRECT. T F 1. Hypothesis testing is a procedure based on sample evidence and probability theory to decide whether the hypothesis is a reasonable statement. ANSWER (True) T F 2. For a one-tailed test using the 0.05 level of ...
*October 11, 2008 by Mary*

**Statistics**

PLEASE CHECK AND SEE IF I HAVE THESE ANSWERS CORRECT. T F 1. Hypothesis testing is a procedure based on sample evidence and probability theory to decide whether the hypothesis is a reasonable statement. ANSWER (True) T F 2. For a one-tailed test using the 0.05 level of ...
*October 12, 2008 by Susan*

**Precalculus**

The figure shows a 10 x 10 square centered at the origin. The darker shaded square is the image of this square, dilated by a factor of 0.8 and rotated about the origin by exactly the number of degrees, theta, so that its corners touch the sides of the parent square. The ...
*March 16, 2011 by Sam*

**maths**

simplify the following expression without using calculator. -2(-4a squared + b cube) square ........ -2 (-4a squared + b cube)(-4a squared + b cube) -2 (16a square - 4a square b cube + b cube) -2 (+ 16 a square = b cube ) -32a square - 2b cube.
*January 25, 2015 by rubbia*

**Math**

I am putting < for the square root abbreviation. I don't know how to use it on my comp. 3<99-2<44-6<11=? On a graphing calculator, the carrot symbol is used to show exponents. that’s what I used here. Solve your exponents first: 3^99, then 2^44, then 6^11 After ...
*February 22, 2007 by Andrea*

**physics**

Consider the following set of equations, where s, s0 and r have units of length, t has units of time, v has units of velocity, g and a have units of acceleration. Take k to be dimensionless.Identify if these are dimensionally correct or incorrect. 1)v^2= 2as + kav 2)s = s0 + ...
*September 2, 2012 by selena*

**heeeeeeelp math**

P is a point outside of circle Γ. The tangent from P to Γ touches at A. A line from P intersects Γ at B and C such that ∠ACP=120 ∘. If AC=16 and AP=19, then the radius of Γ can be written as a root b/c where a and c are co prime and c is not ...
*June 7, 2013 by clavin*

**solid mensuration**

let a and b be opposite vertices of a unit cube (i.e. , the distance between a and b is the square root of 3). find the radius of a sphere, whose center is in the interior of the cube, that is tangent to the three faces that at a and also tangent to the three edges that meet ...
*March 20, 2014 by aivan alob*

**Science**

1. The process of nitrogen fixation uses oxygen to produce carbon dioxide- false? 2. While a pyramid of numbers or biomass can be inverted, a pyramid of energy cannot- false? are my answers correct?
*October 2, 2014 by Bethany*

**English**

I forgot to include these last two sentences. Thank you very much. 1) But now that she has experienced the true essence of love, everything else seems false and artificial. 2) Dorian is very angry and disappointed and instantly severes their relationship. Dorian will later ...
*October 2, 2011 by Henry2*

**English**

Which sentence most clearly exhibits bias? A. The professor’s points appear to be based on outdated research. B. If my argument is true, Blake’s argument is clearly false. C. Few would disagree that poor people are incapable of rational thinking. D. When a major storm is ...
*March 7, 2015 by jb*

**Science**

This is not questions its the answers hope it helps took a long time to type. A basketball momentarily changes shape as it bounces off the floor. This is due too balanced forces acting on the ball TRUE* FALSE* A ball slowing down as it rolls across a carpet is a example of ...
*March 23, 2016 by Peanut buddy*

**Math**

1. The figure below is a parallelogram which statement must be true? D___________E | | |__________ | F G a.line Df is parallel to line de b. Line Df is parallel to line eg c. Line fg is parallel to line eg d. Line fg is parallel to line df 3. All __ are rectangles A. ...
*February 8, 2016 by Help*

**Literature 1010**

Transitions function much like road signals. A) True B) False this question does not make sense. when i look in my book ans online, i do not see anything referring to the Transitions function can someone tell me what a transition function relating to Literature.
*March 6, 2011 by Alex*

**GRAMMAR**

Question: A predicate is the part of the sentence that always contains a noun or pronoun. TRUE FALSE The predicate is one of the two main parts of a sentence - The other being the subject. The predicate is said to modify the subject. (a statement or action) - 50-50 guess. Why ...
*June 30, 2011 by Leslie-To:Writeacher*

**Physics HELP!!**

A square, 0.74m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. This axis is perpendicular to the plane of the square. A force of 26.8N lies in this plane and is applied to the square. What is the magnitude of the maximum...
*November 12, 2012 by Ann*

**Physics**

A square, 0.36 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. The axis is perpendicular to the plane of the square. A force of 14.4 N lies in this plane and is applied to the square. What is the magnitude of the ...
*November 15, 2012 by Elizabeth*

**Physics**

A particle starts from the origin with velocity 2i m/s at t = 0 and moves in the xy plane with a varying acceleration given by 2 (sq root t) where is in meters per second squared and t is in seconds. (a) Determine the velocity of the particle as a function of time. So I ...
*September 14, 2011 by Katie*

**GEOMETRY **

I'm working on a story problem that is using 30-60-90 triangles. I have to solve for the hypotenuse. The long leg is 6 feet. So, short leg would be 6 = x square root of 3 /3...Then I'm stuck. I know the hypotenuse is dbl the short leg
*February 12, 2016 by sweet pea*

**algebra**

How come the function square root of (4-x^2) has a domain of -2 is less than or equal to x is less than or equal to 2? I would think it would be x is greater than/equal to one.
*October 25, 2009 by Alex *

**math**

A square martix A is said to be idempotent if A=A^2. The only real numbers that are idempotent are 1 and 0, but this is not true for martices. Find a 2x2 idempotent other than 1 or 0.
*November 25, 2010 by jim*

**Science CHECK ANSWERS PLZ**

Which of the following gases was most likely present in Earth's earliest atmosphere? A. nitrogen B. hydrogen* C. argon D. oxygen Which of the following statements accurately describes the development of the geologic time scale? A. Scientists developed the geologic time scale ...
*November 16, 2015 by Anonymous*

**Math **

Please please help!!!!! Solve the inequality and write the solution set in interval notation 4x^3 -6x^2<0 2x^2 (2x-3)<0 2x-3<0 x= 3/2 Now I'm not sure about this 2x^2<0 x^2<1/2 sq root of x^2<sq root of 1/2 x=.7071 Right? When I plug it in the calculator it ...
*June 14, 2013 by Ashley*

**Math**

For nth root functions, I know that if "n" is even, then the domain must be equal or greater than zero. If "n" is odd, then domain will be all set of real numbers. But how do I determine the range of an n-th root function?
*September 29, 2015 by ela*

**Algebra**

A positive integer minus a positive integer is always positive. This statement is sometimes true. For example, 17 – 5 = 12, but 15 – 20 = –5. post five other statements about the addition and subtraction of positive and negative integers, and ask whether each is always true, ...
*October 8, 2013 by Mary Ann*

**pre algebra**

Each side of the triangle shown has the same length. If the perimeter of the triangle is 49 inches, the length of each side is 3 inches. true or false
*June 30, 2011 by hi*

**pre-calc**

Can someone check my work please? Convert each polar equation to a rectangular equation. Then determine the graph's slope and y-intercept. ( I'm going to type 'x' instead of theta ) r sin(x- pi/4)=2 r(sin(x- pi/4))=2 r(sinx*cos pi/4 - sin pi/4*cosx)=2 r(sqrt2/2*sin x - sqrt2/2...
*April 12, 2007 by Jessica*

**Geometry**

Please Please HELP!!!! I need the answer to this and i've worked it out but I don't know if it is correct... Please check my answer!!!! The polygons are regular polygons. Find the area of the shaded region to the nearest tenth. I can't post a picture of it but it shows a ...
*April 14, 2016 by Becca*

**Math**

Math.. find limit help? Find the given limit. (x→ 1)lim: (square root x-1) + 1
*April 26, 2011 by Jacob*

**Grammar**

1. The rain poured into the river and flooded the nearby community. -simple sentence 2. Some indefinite pronouns are always plural and require plural verbs. select these pronouns. A. both, many, several B. everyone, everybody, any, several C. somebody, someone, both, most D. ...
*July 1, 2011 by lizzie*

**PHYSICS**

The hydraulic gradient in an 10-ft-thick aquifer at a site of uniform flow prior to pumping is -0.02. The hydraulic conductivity is 100 ft/day. True or False: After pumping starts at a well at a rate of 10,000 cubic feet per day, the distance from the well to a point of ...
*March 9, 2011 by MARK*

**health**

Please help... Staying fit requires all of the following EXCEPT _______. A-a rigid fitness plan B-physical activity C-healthy habits D-healthy eating 5. True or False: To develop a personal fitness plan you should consider which exercises and sports you like the most.
*May 3, 2011 by mo *

**maths**

To get an A grade on the test, you need a total score of more than 16 points. One of the students knows the correct answer to 6 of the 20 questions. The rest she guesses at random by tossing a coin (one toss per question,true if heads and false if tails). What is the chance ...
*April 27, 2013 by anonymous*

**English**

Question about the short story the Wager by Anton Chekhov: The climax comes at the end of the middle section of the story after which the author "ties up loose ends" by telling the reader what happened to each major character. True or False I am really confused about this ...
*October 9, 2014 by Aivar*

**Cultural Anthropology 101**

Theocracies are: (Points : 1) 9A)****determined by the religious beliefs of the society. based on the accumulation of wealth by individuals. a group of elected officials. are sanctioned by Big Men. 2. Chiefs within chiefdoms generally gained their positions: (Points : 1) by ...
*December 16, 2012 by mandy*

**Math**

I need help with this problem. (Just imagine a small square with 5x-1 at the top of the square, 2x on the left side of the square and in the right hand corner of the square there is a box on the top is a 3 and on the left side is a 2.) You have to figure it out the area of ...
*March 21, 2009 by Madeline*

**Algebra**

Solve x^2-10x+22=0 by using the quadratic formula. After I substituted in the values for A, B, and C, and broke it down I got 10 plus or minus 2 times the square root of three/2. How do you break this down further? I know ten can be divided by 2 to get five, and 2/2 is 1, but ...
*October 10, 2009 by Corinna*

**physics**

A 4kg object is subjected to two forces, F1=2Ni-3Nj, and F2=4Ni-11Nj. The object is at rest at the origin at t=0. What is the objects acceleration? I know you use F=m*a Do you add the two F vectors together & take the square root to find the sum of F? ex: Fnet=6Ni-14Nj & then ...
*September 19, 2010 by J*

**Math**

Hi,I need to know how to do question like this without using a calculator. Can anyone help please. Which of the following is closest to square root of 4000 A)40 B) 60 C) 200 D) 2000 I know the answer is B , but I did it on the calculator. Can someone show me how to get the ...
*July 15, 2010 by Mike*

**Algebra II**

What two numbers are represented by each of the following? -6+/- sqrt 6 -6 plus or minus square root 6 not sure how to type the question. I think the answers are -6 + sqrt 6 -6 - sqrt 6 I'm just not sure what the question is actually asking for. Could someone please help me. ...
*May 20, 2011 by jet*

**math**

the volume of an equilateral triangular frustum is 183 square root of 3 cubic inches. The upper base, 9in above the lower base, has an edge which measures 8in. Compute for the edge of the lower base.
*February 19, 2012 by kitOy*

**algebra**

The stooping distance d of a car after the brakes are appied varies directly as the square root of the speed r. If a car traveling 40mph can stop in 90 ft., how many feet will it take the same car to stop when it is traveling 60 mph.
*June 1, 2012 by ll*

**math**

write as a single logarithm: -2logbase3(1/x)+(1/3)logbase3(square root of x) please show the steps to solving this. thanx. remember that 1 log (AxB) = log A + Log B (same base) 2 log (A/B) = log A - log B 3 log A^n = n log A use these three rules and it becomes an easy question.
*February 25, 2007 by michelle*

**geometry**

State what conclusion can be made IFx=5 and the given statement is true IFx>x=z, then y=14z. I don't understand this part of your statement: "IFx>x=z," Please clarify this. If x>X-2, then y=14x Ok, I will suppose this is the question then "State what conclusion can be...
*October 2, 2006 by maria*

**MATH HELP PLEASE**

The slash (/) line represents that the number is a fraction. divide: sqrt45 / sqrt81 = simplify: 7sqrt3 / sqrt5 = Multiply: sqrt7/sqrt8 X sqrt24/sqrt49 = Thanks for the advice regarding how to show square root symbol correctly. Also thank for taking the time to help with these...
*October 29, 2011 by TO: drwls*

**geometry**

(imageshack)123 (.)us(/)photo 123 (/) my-images 123 (/)42(/) 123 2vja. jpg(/)123 Open that link please , just delete the parentheses and spaces and 123's please please help me with my assignments I beg you cooperate with me huhu 1. in the figure , the areas of traingle cef, ...
*November 9, 2013 by Barbie lee *

**Chemistry**

True/False 1. Diatomic molecules contain two atoms?T 2. Electrons travel in pairs? T 3. The energies needed to break chemical bonds can be measured T 4. Bonding involves all the electrons in an atom T 5. Lewis structures are used to describe bonding? F 6. More than one pair of...
*January 16, 2011 by Chem*

**Geometry**

ABGF is a square with half the perimeter of square ACDE. GD = 4in. Find the area of the shaded region. Please help me work this problem out I am stuck. It's a square and in the top right corner there in another square inside it that is 1/4 the size of the big one. From that ...
*June 7, 2016 by Pleasehwlp*

**Geometry (PLEASE HELP!!!)**

Please Please HELP!!!! I need the answer to this and i've worked it out but I don't know if it is correct... Please check my answer!!!! The polygons are regular polygons. Find the area of the shaded region to the nearest tenth. I can't post a picture of it but it shows a ...
*April 14, 2016 by Becca*

**Geography **

1. Demographers report the population density of a country as a measure of total population relative to land size. TRUE FALSE Answer : true 2. Which of the following is not an example of adequate physiological population density? A. Cities such as Luxor, Cairo, and Alexandria ...
*October 30, 2015 by Geo*

**roots**

what root goes in this blank? i can't figure it out. She wore ________sox at the beach. argyll bobby crew (none of which are roots, however; sorry) =( How about "no" (root of "nothing")? I hope this helps. Thanks for asking.
*April 11, 2007 by Jordan*

**Algebra**

There are 5 quadratics below. Four of them have two distinct roots each. The other has only one distinct root; find the value of that root. 4x^2+16x-9 2x^2+80x+400 x^2-6x-9 4x^2-12x+9 -x^2+14x+49
*February 7, 2015 by Juliet*

**algebra **

There are 5 quadratics below. Four of them have two distinct roots each. The other has only one distinct root; find the value of that root. 4x^2 +16x - 9 2x^2 + 80x + 400 x^2 - 6x - 9 4x^2 - 12x + 9 -x^2 + 14x + 49
*February 11, 2016 by Zane*

**Algebra**

Solve the quadratic equation. 3x^2-15x+18=0 I know that the formula to quadratic equation is x=-b+and-(square root)b^2-4ac divided by 2a. I know that a=3, b=-15 and c=18, then subsitute in and get two answers, my problem is that I keep getting an answer that does not work ...
*April 22, 2010 by Lexie*

**geometry**

I need to find the area of the shaded portion of a circle with a square in the middle all corners touching the circle. My square has a line measurement of 10 cm. I know that the area of the square is 100 cm(10 x 10). But I am not sure what to do with the circle. Is the ...
*May 29, 2010 by bart*

**Phyiscs**

True or false: When a system consists of several objects, each with their own mass and velocity, the linear momentum of the system as a whole is simply the product of the system's total mass and the velocity of the system's center of mass.
*October 30, 2012 by Angelena*

**Health**

Please check 1. Which is a common viral disease? A. strep throat B. lyme *** C. tuberculosis D. common cold 2. which statement is about the flu? A. there is no cure B. there is usually a fever *** C. It typically lasts 3-7 days D. it spread by contact with infected people or ...
*March 11, 2015 by Anonymous *

**PRECAL!**

Prove: (3cosx + 4sinx)^2 + (4cosx - 3sinx)^2=5 ...this is all under the square root sign. this is what i did please check. i multipied both binomials. but i get cos square x..and sincosx ..how do i combine them..please help! In this case, after multiplying binomials, there ...
*March 27, 2007 by just*

**Physics-can anyone check my work?**

A particle starts from the origin with velocity 2i m/s at t = 0 and moves in the xy plane with a varying acceleration given by 2 (sq root t) where is in meters per second squared and t is in seconds. (a) Determine the velocity of the particle as a function of time. So I ...
*September 14, 2011 by Katie*

**Math**

The smallest real number in the solution set of 2x > 6 is 4. A) True B) False - The smallest real number in the solution set of 2x > 6 is 3. C) False - The smallest real number in the solution set of 2x > 6 is a number greater than 3. For example, 3.01 is a real ...
*October 4, 2011 by Michelle*

**Math**

The smallest real number in the solution set of 2x > 6 is 4. A) True B) False - The smallest real number in the solution set of 2x > 6 is 3. C) False - The smallest real number in the solution set of 2x > 6 is a number greater than 3. For example, 3.01 is a real ...
*October 4, 2011 by Mary*

**Math **

Find all solutions to the equation sqrt(2-3x)= 9. Express your answer as a common fraction. I squared both sides and I got 4-9z^2=81 and then -9z^2=77 then I divided both sides by -9 and now I am stuck, I know I can square root both sides. But I think something went wrong.
*December 3, 2014 by Mark *

**why will no one answer? chem**

The decomposition of hydrogen peroxide in solution and in the presence of iodide ion was studied in laboratory, and the following mechanism proposed based on the experimental data. H2O2 + I - = H2O + IO - (slow) H2O2 + IO - = H2O + O2 + I - (fast) Which one of the following ...
*February 27, 2012 by john117*

**Math**

A company manufactures fence sections for residential use. The number, s, of sections that can be produced per day is related to the number of hours, h, of labour required by the function s=2.1 square root h (Show your work) a) State the domain and range for the function. (2 ...
*October 8, 2014 by Alex*

**Math**

A rectangular box is 4cm wide, 4cm tall, and 10cm long. What is the diameter of the smallest circular opening through which the box will fit? Round to the nearest tenth of a centimeter. Is it 4 squared plus 4 squared which equals 32 then take the square root of 32 and get 5.65...
*February 23, 2016 by KIM*

**Algebra**

Solve the system of equations and check your solution. x^2+y^2=25 x+2y=10 I tried but I got only the 2 x values 8 plus or minus the square root of 164 all over 2. I know the answer is wrong but I can't find my mistake. Can you show me step-by-step how to solve this system of ...
*April 6, 2016 by Anonymous*