Saturday

April 25, 2015

April 25, 2015

Number of results: 19,313

**Math**

1. One of the formulas for finding the partial sum of an arithmetic sequence is Sn = n(a1 + an) True 2. The value of a probability must be in the interval [0, 1]? True
*June 7, 2013 by mysterychicken*

**stats**

suppose a normal distribution has a true population mean of 18 and a true standard deviation of 2. what % of observations will be 18 or less, 18 or greater and in the range from 16 to 20?
*June 19, 2013 by dometrice*

**7th grade math**

Q:The ratio of the perimeters of two square is 5 to 4. If the area of the smaller square is 36 units, what is the area of the larger square? A: 56.25 My teacher told us the answer, 56.25, so that we could correct it. But I don't understand how she got the answer at all, so can...
*April 7, 2013 by dingbat*

**English please check my answer**

Please check my answer thank you Cardiology is the study of the heart. Which of the following terms describes the foundation upon which the medical word is built that usually relates to the body organ involved ? A. Prefix B. Suffix C. Root D. Combining form My answer is Root (c)
*March 19, 2008 by Dakotah*

**math**

If a quarter circle is placed on a square target and the radius of the quarter circle is the same as the length of a side of the square, what is the probability that a dart that hits the square does not hit the quarter circle
*October 26, 2011 by Nikki*

**ISDS **

The optimal total shipping cost in a minimization transportation model is $622, and the reduced cost from source node 1 to destination node 6 is $6. This implies that if one were to deviate from the optimal solution by shipping one unit from node 1 to node 6, the new minimum ...
*March 13, 2012 by jamaal*

**History**

True Or False; The Political machines of the large cities determinded what type of projects would be funded by tax dollars and for the most part they were honest organizations, The U.S. government's treaties were just ways of moving the Native Americans around so that it and ...
*May 7, 2012 by MM*

**HELP!!!!**

Darnell used one small can of polyurethane to seal a square patch of his hardwood floor. The can advertised coverage of 50 square feet. What is the approximate side length of the square Darnell sealed? a)7 feet b)8 feet c)25 feet d)49 feet
*April 8, 2011 by Dezzy*

**physics: escape velocity **

You are on Pluto and would like to send a probe into space so that it does not fall back to the surface. What minimum launch speed do you need? (The mass of Pluto is 1.3x^22 kg and the radius of Pluto is 1.18x10^6 m). Answer in km/s. I have used the velocity of escape = (...
*March 26, 2010 by Laramie*

**Math**

A media company divides 1 million copies of a new music CD into 100 equal groups before sipping the CD to 100 stores .how many CDs is the company shippi ng to each store? Please help me , i don't know the answer. Write the value of the underlined digit. 76,982 the value 9 ( ...
*September 8, 2014 by Nnn*

**Reading**

If a blue fish is 70 ft long and a red fish is 45 feet long. This is statement true or false. A blue fish is not as long as a red fish
*May 8, 2012 by Annie*

**American Government**

Hey guys could you please check this thanks. The directions are either the following statements are true or false. 1. ------ Article I of the constitution refers to the Legislative Branch. Answer: True 2. ----- Congress is made up of two chambers, the senate and the president...
*January 29, 2009 by Baby Girl 2122*

**Geometry **

1. If ΔRST symbol ΔNPQ, then RT line is congruent to _____. (1 point) line NP line NQ line PQ line QP 2. Given RST NPQ, RT = 7x 5, NQ = 5x + 11, find the length of RT and of NQ. (1 point) 8 51 40 56 3. Which of the following statements is true about the triangles ...
*December 5, 2013 by hi*

**math**

Find two positive decimals a and b that make the following statement true. Then find two positive decimals a and b that make the statement false. If a < 1 and b < 1, then a ๗ b < 1.
*October 13, 2014 by Anonymous*

**math**

2xsquare- 8x - 42 over 6x square divided by x square - 9 over x square - 3 x
*January 28, 2010 by daniel*

**Calculus**

I think I have the correct answers for the following problems. For anyone who has the time I would appreciate it if you could tell me if I am correct/incorrect. Thank you. 1). Differentiate ใ(x)sin x = (2xcosx+sinx)/2ใ(x) 2). Differentiate 2t/(4+t^2) = (8-2t^2)/(4+t^2)^2 3...
*September 25, 2011 by Linda*

**Algebra**

Rationalize V stands for square root 3/V2 3/V2 x V2/V2 = 3V2/V2V2= 3V2/V4 =3V2/2 Answer 3V2/2 6V2/V3 6V2/3 x V3/V3 =6V2V3/V3V3 = 6V6/3= 2V6 My book gives these two examples. In the first problem you multiply the 2 in the denominator and get 4. It the second problem the 3 in ...
*June 19, 2009 by G*

**math**

The area of a rectangle is 84 square units. If its length is shortened by 7 units and its width by 2 units a square is formed. Determine the area of the square.
*September 10, 2009 by Mary*

**math**

a square has a length of 5 inches. Then it is increased by 20%. Then the same square has a width of 10 inches and it is increased by 10%. How Many Percents has the area of the square been increased By? Thanx 4 your Help
*January 24, 2010 by qwertyuiop*

**Japanese langauge help**

I have marked my answer with a โ
, if I am wrong could you please give me the correct choice and explain if you will? I was really confused on these types of questions. Comparative sentences usually use the words: "ใปใ" and "ๆน"? True โ
False 1. Write a comparative ...
*January 14, 2014 by Kirito*

**algebra**

Determine the value(s) of k for which x^2+(k-2)x-2k=0 has equal and real roots. a x^2 + bx + c = 0 has two different roots if the discriminant D defined as: D = b^2 - 4 a c does not equal zero. If D = 0 then there is one root. That root is then real if b/a is real. In this ...
*January 18, 2007 by Shay*

**algebra/math**

I have this figure of a square QRST with an equilateral triangle PQT sitting on top of the square. The figure looks like a little house... My question is if PQ equals 6 cm, then what is the area of the square? Do I need to find the area of the triangle to figure this out? Do I...
*March 11, 2009 by Mike 50*

**electric potential**

Given a square of side length a = 6 cm. We place a charged particle at each corner, three of them carry +7 nC of charge and one carries the same amount of negative charge. What is the electric potential at the center of the square? Choose V = 0 V for a position very far from ...
*February 24, 2010 by Jeff*

**math**

If the sides of a square are lengthened by 8cm, the area becomes 144 cm^2 Find the length of a side of the original square. The length of a side of the original square is?cm
*February 4, 2010 by Tina*

**pre-cal**

The sq root of -4 (3-sq root of -9) a)6 +6i b)-6+6i c)6-6i d)-6-6i Again the i's are in italics. I would think that c and d could be eliminated because the answer is suppose to be in the form a + bi but they could be trting to trick you. I'm not quite sure what your problem is...
*March 7, 2007 by raven 31791*

**Algebra II-Please check fpr explanation**

I have a question concerning this problem:I just want to make sure my formulas are correct before I do problem It is a hyperbola equation (y-4)^2/49 - (x-6)^2/72 = 1 1.It is a vertical hyperbola, correct? 2. the a^2 is 49, correct? 3. the b^2 is 72, correct? 4. I find the foci...
*January 14, 2012 by Graham*

**psychology**

Which of the following statements is false? A. Childhood psychopathology is relatively common occurrence. B. Most childhood problems and disorders remit by the end of childhood. C. Children today face greater stressors than they did in the past. D. Young children and ...
*January 27, 2010 by Nia*

**high school**

Use the digits in the year 2010 and the operations +, -, x, ๗, sqrt (square root), ^ (raise to a power), and ! (factorial) along with parentheses, brackets, or other grouping symbols to write expressions for the counting numbers 1 through 100. All four digits must be used ...
*December 18, 2009 by Sama*

**maths**

what is the largest domain of the following functions f(x)=3x-5 f(x)=square root of (x+4) f(x)= 2 over x-4 f(x)= sqaure root of (x2-9) f(x)= 2 over x(x+7) Hopefully you've solved these by now. I just noticed the question and see there's no reply. The question is "what is the ...
*September 1, 2006 by jonathan*

**math-volume**

I'm confused with how to solve this problem, so help would be great! The volume of any spherical balloon can be found by using the formula V= 4/3 pi r^3. Write an equation for r in terms of V and pi All this is asking you to do is get r=something. First, I would divide both ...
*January 21, 2007 by julie*

**Programming C++**

If we are using two data intergers and there answer is bigger than simple data intergers and we are givig computer long data integers for the answer but the answer is false . so i want to know why it is false?
*April 16, 2010 by Maryam*

**U.S. GOVERNMENT**

1)The Greeks openly accepted all groups of people into their "total democracy. 2)The Greeks were the first to refer to one of their democratic bodies as a "Senate. 3) From the Middle Ages, people further developed the democratic ideal of equality along with idea that the ...
*June 8, 2012 by Booker Perry*

**Math**

A few more questions 1. How do you describe the negative square root of 47? I said that it was imaginary, but I got one point marked off for my answer. The descriptions we could choose were Natural, Whole, Integer, Rational, Irrational, and Real. What is the correct ...
*November 5, 2008 by Patti*

**7th grade math Ms. Sue please**

4. List all of the quadrilaterals with exactly one pair of parallel sides. (1 point) parallelogram; trapezoid rhombus; parallelogram; rectangle trapezoid rhombus;, square; rectangle 5. List all of the quadrilaterals with four right angles. (1 point) trapezoid; rectangle; ...
*February 4, 2013 by Delilah*

**math**

A rectangular box with a square base and top is to be made to contain 1250 cubic feet. The material for the base costs 35 cents per square foot, for the top 15 cents per square foot, and for the sides 20 cents per square foot. Find the dimensions that will minimize the cost of...
*November 29, 2009 by shawn*

**Calculus**

A rectangular box with a square base and top is to be made to contain 1250 cubic feet. The material for the base costs 35 cents per square foot, for the top 15 cents per square foot, and for the sides 20 cents per square foot. Find the dimensions that will minimize the cost of...
*November 29, 2009 by ann*

**Math**

Find the missing measurement for each triangle. 1. A= 16 in squared, b= 8 in., h=? My answer 4 in. 2. A= 20 m squared, b=___, h = 4 m. My answer b=10. 3. A=____, b=6.4ft. h=7.6ft My answer A=24.32ft square. 4. A=14 cm squared, b=2cm, h=___ My answer 14cm. 5. A=36mi square, b=...
*April 10, 2014 by Khrys*

**Chemistry**

When 4.0 mol of CCl4 reacts with an excess of HF, 3.0 mol of CCl2F2 (Freon) is obtained. The equation for the reaction is CCl4(l) + 2HF(g) --> CCl2F2(l) + 2HCl9g) State which of the statements are true about the reaction and make the false statements true. (a) The ...
*September 15, 2010 by Bree*

**chemistry**

Equal masses of gaseous N2 and Ar are placed in separate flasks of equal volume at the same temperature. Tell whether each of the following statements is true or false. Briefly explain your answer in each case. (a) There are more molecules of N2 present than atoms of Ar. (b) ...
*March 30, 2007 by Gabriela*

**math,correction**

the problem reads: evaluate sqrt (-4) if possible. my answer: sqrt (-4)<0 therefore this is not a real number looks correct you cannot take the square root of a negative number in the real number set. Have you learned the imaginary number i = sqrt(-1) ?? if so you can do: ...
*April 19, 2007 by jasmine20*

**math**

Ok The Galtins are buying a carpet for their home. They need about 1,175 square feet of carpet. The carpet they buy is sold by the square feet. What is the estimate of number of yards the Galtins need for thier home? divide square feet by 27 to get square yards.
*March 1, 2007 by oath*

**Physics**

Two idencial point charges (q = 7.40 x 10^-6 C) are fixed at diagonally opposite corners of a square with sides of length 0.440m. A test charge (q = -2.30 x 10^-8 C), with a mass of 7.25 x 10^-8 kg, is released from rest at one of the empty corners of the square. Determine the...
*February 3, 2010 by Allee*

**Physics**

Two identical point charges (q = +4.60 x 10-6 C) are fixed at opposite corners of a square whose sides have a length of 0.510 m. A test charge (q0 = -4.80 x 10-8 C), with a mass of 9.80 x 10-8 kg, is released from rest at one of the corners of the square. Determine the speed ...
*February 10, 2013 by Anonymous*

**CALCULUS**

I need to find the unit normal vector given: r(t)= ti + (6/t) j where t= 3 I know I need to find the unit tangent vector first, which is r'(t) divided by the magnitude of r'(t). r(t) can be rewritten as ti+ 6t^-1 r'(t) = i- 6t^-2 = i- [6/ (t^2)] j For the magnitude of r'(t) I ...
*September 28, 2014 by Dia*

**math**

what is a SQUARE ROOT? sqrt(x) * sqrt(x) = x sqrt(x) = x ^ (1/2) details: http://en.wikipedia.org/wiki/Square_root
*October 29, 2006 by matthew*

**Algebra**

I am solving X^4-3x^2+2=0 I factored it to be (x^2-2)(x+1)(x-1) as my book suggested. But why is it three sets of parentheses? How do you know that it's supposed to be three sets of parentheses in opposed to two or four? And how come one of the answers according to my book is ...
*October 8, 2009 by Katie*

**ap statistics**

In hypothesis testing, β is the probability of committing an error of Type II. The power of the test, 1 - β, is then: A. the probability of failing to reject H0. B. the probability of rejecting H0 when HA is true C. the probability of failing to reject H0 when H0 is ...
*April 24, 2014 by emma*

**science**

write T if the statement is true or F if it is false. a.)All the planets travel around the sun at the same speed.my answer is T. b.)The sun's gravity keeps the planets in orbit around it. my answer is F. c.)There is an asteroid belt between Jupiter and Saturn.my answer is T. d...
*January 9, 2014 by Anonymous*

**Chemistry**

Graham's Law predicts that the ratio of the rate of effusion of gas X to the rate of gas Y equals the square root of the INVERTED ratio of their molar masses: Rate of X/Rate of Y = SQRT(My/Mx) What is the ratio of rate of effusion of Helium to Nitrogen gas? Enter your answer ...
*October 28, 2012 by Anonymous *

**College Algebra**

I have a few problems I need help with and also do have multiple choice. If I can have an explanation of how to get the answer that would be great. 1. Use the discriminant to determine whether the given equation has two irrational roots, two rational roots, one repeated root, ...
*February 4, 2013 by Kristen *

**finding c: calc**

let f(x)=square root x. if the rate of change of at x=c is twice its rate of change at x=1, then c=? what???? i don't get get it. to begin with, i took the derivative if that helps which is 1/(2*sqrtx) . f'(x) = 1/(2*sqrtx) is correct f'(x=1) = 1/2 The problem is to find the ...
*December 5, 2006 by david*

**Engineering**

-From the following two linear homogeneous algebraic equations:(sqr= square root) (1) B*sin(kl/sqr2) = D*sin(kl) (2) (k/sqr2)*B*cos(kl/sqr2) = (k)*D*cos(kl) -Form matrix of these 2 equations and solving the determinant=0 will lead to: (1/sqr2)*cos(kl/sqr2)*sin(kl) - sin(kl/...
*October 30, 2011 by Chris*

**STATISTICS**

True or False? A researcher is interested in studying whether there is a correlation of IQ with health. For this purpose he selected a sample of 261 people and asked them to complete two questionnaires: one for IQ and one for health. After evaluating the questionnaires each ...
*September 6, 2013 by Marian*

**Computer Science**

2. Student that has a name, point and course count. The class should have methods that can: (a) add a grade to the GPA and GPA should be calculated and returned appropriately, (b) create duplicate of itself and return that duplicate, and (c) see if another student has the same...
*May 28, 2010 by Sarah N*

**CRT205**

Since it is the very nature of terrorism not only to cause immediate damage but also to strike fear in the hearts of the population under attack, one might say that the terrorists were extraordinarily successful, not just as a result of their own efforts but also in ...
*February 8, 2009 by Confused*

**Calculus (pleas help I really need to check this)**

Assume that each of the follwing functions gives the position of an object at time t. Find the velocities indicated by setting up and evaluating a limt algebraically. (a) s(t) = 3t^2, Find v(-1). (b) s(t) = 1/t , Find v(2). (c) s(t) = square root of t, Find v(1). The answers ...
*February 17, 2011 by Catherine*

**math**

whrit for multiplication/division facts using the numbers 3, 8, and 24. 5.what are the seven months of the year that have 31 days? 6. find the eughth multiple of six. then add one. what is the square root of the answer? 8. in the 2004 presidentail election, 4651 residents of ...
*November 4, 2010 by jojo*

**Algebra - Middle School**

Use the digits in the year 2010 and the operations +, -, x, ๗, sqrt (square root), ^ (raise to a power), and ! (factorial) along with parentheses, brackets, or other grouping symbols to write expressions for the counting numbers 1 through 100. All four digits must be used ...
*December 18, 2009 by Sama*

**Algebra (please help)**

Determine whether the following statement makes sense or does not make sense, and explain your reasoning (modified from true/false format of text): If f(x) = 3x, then f^-1(x) = 1/3x A) This makes sense because the inverse would divide by 3 to "undo" the multiplication by 3 in ...
*September 12, 2011 by Christian*

**Social Studies (MAPS)**

grid north is west of true north by 0 degrees, 57 minutes, which is equal to 17 mils. (There are 6,400 mils in a circle.) Magnetic north is east of true north by 8 degrees, which is equal to 142 mils. *B. What is the difference (in degrees and minutes) between true north (...
*May 9, 2010 by Lisa*

**Algebra**

True or False 1. 5, 5, 5, 5, 5,
is an arithmetic sequence. 2. In an arithmetic sequence, it is possible that the 13th term is equal to its 53rd term. 3. In an arithmetic sequence, the common difference is computed by subtracting the first term from the second term ...
*September 9, 2014 by Ruby*

**Business law**

Would you be able to check my 5 answers: 1. The continued possession by a minor of a good after reaching the age of majority will be treated as an implied ratification of the contract by which the minor acquired that good Answer True 2. If a contract is held to be avoidable ...
*February 29, 2008 by Mike*

**Physics Electricity**

Two identical point charges (q = 7.20 x 10^6 C) are fixed at diagonally opposite corners of a square with sides of length 0.480 m. A test charge (q0 = 2.40 x 10^8 C), with a mass of 6.60 108 kg, is released from rest at one of the empty corners of the square. ...
*February 1, 2013 by Frustrated*

**Math (Ms. Sue Please Help)**

Determine whether the following statement makes sense or does not make sense, and explain your reasoning (modified from true/false format of text): If f(x) = 3x, then f^-1 (x) = 1/3x A) This makes sense because the inverse would divide by 3 to "undo" the multiplication by 3 in...
*September 12, 2011 by Christian*

**statistics**

the following data represents the percentages of family income allocated to groceries for a sample of 50 shoppers: percentage of family income #of shoppers 10-19 6 20-29 14 30-39 16 40-49 11 50-59 3 1.calculate the value of mean 1.1 meadian percentage of family income spent on...
*April 27, 2007 by mary*

**algebra**

write (27a^-3)^(-2/3) in simplest form. solve log(6x+11)=2 please and thanks I need to see your work on the first. On the second, take the antilog of each side what is the antilog? I'm not quite sure what to do for the first, but this is what I tried to do: (27a^-3)^(-2/3) =...
*May 27, 2007 by Lillian*

**Chemistry **

IUPAC name for Dibenzalacetone: The molecule is symmetric with 2 benzene rings on each end and a ketone in the center. So is the "longest chain" that is to give the root of the name considered to be one of the 6C benzenes. OR is the root of the name considered to be the 5C ...
*April 13, 2010 by Anonymous*

**algebra**

true or false 1. fraction cant be written as decimal. 2. natural numbers are referred to as counting numbers.whole numbers consists of counting numbers.whole numbers consist of counting numbers as well as the number 0 3. intergers do not include negative numbers. 4. ...
*August 31, 2008 by samanthast*

**Math**

The length and width of a rectangle are (x+4)cm and xcm respectively. Write down expressions for: A. The perimeter of the rectangle B. The length of the side of a square with the same perimeter If the sum of the areas of the square and the rectangle is 94cm(square), find x Pls...
*October 24, 2011 by Ghiffari*

**physics**

A 0.0150 kg, 2.09 m long wire is fixed at both ends and vibrates in its simplest mode under a tension of 214 N. When a tuning fork is placed near the wire, a beat frequency of 5.20 Hz is heard. What are the possible frequencies of the tuning fork? I solved for speed using ...
*November 26, 2009 by Anonymous*

**Math - Solving for Trig Equations**

Solve the following equation for 0 less than and/or equal to "x" less than and/or equal to 360 -- cos^2x - 1 = sin^2x -- Attempt: cos^2x - 1 - sin^2x = 0 cos^2x - 1 - (1 - cos^2x) = 0 cos^2x - 1 - 1 + cos^2x = 0 2cos^2x - 2 = 0 (2cos^2x/2)= (-2/2) cos^2x = -1 cosx = square ...
*November 22, 2007 by Anonymous*

**pre calc**

The Identity Function The Squaring Function The Cubing Function The Reciprocal Function The Square Root Function The Exponential Functional Lo The Natural Logarithum Function The Sine Function The Cosine Function The Absolute Value Function The Greatest Integer Function The ...
*December 18, 2009 by kim*

**Discreet Mathematical Structures**

Use proof by contraposition to prove the following statement: If A is the average of two positive real numbers then one of the two numbers is greater than or equal to A. Proof. Domain: positive real numbers P: A=(x+y)/2 Q: x is greater than or equal to A or y is greater than ...
*October 7, 2010 by Anna*

**Social Studies**

Which statement is true about Africa? (A) It has 2 large deserts. (B) Most most people live in southwest. (C) Most of the worlds people live their. (D) It is about 3 million square miles in size.
*October 5, 2008 by Emily*

**algebra**

In the magic square shown (I'll type it out), the sum of the numbers in each row, column, and diagonal are the same. Five of these numbers are represented by v,w,x,y, and z. Find y + z. Here's what the magic square looked like. I'll type semi-colons to seperate each "square." ...
*February 25, 2009 by Anneliese*

**physics**

what is the answer to the following 2 physics equations: a=(v, little f in right bottom corner -v little 0 in bottom right corner /t. I need it simplified to what t is and T^- 2n into the square root of L/g I need the equation simplified to get g
*April 29, 2011 by Kelli Kenyon*

**Health**

11. The physical changes that prepare your body to respond quickly and appropriately to stressors are medical alert responses. a. true b. false B? 29. Someone with ADHD is likely to benefit from a. group therapy b. medication c. psychotherapy d. all of the above B? 33. Seeing ...
*September 26, 2011 by mysterychicken*

**Chemistry - nomenclature**

IUPAC name for Dibenzalacetone: The molecule is symmetric with 2 benzene rings on each end and a ketone in the center. So is the "longest chain" that is to give the root of the name considered to be one of the 6C benzenes. OR is the root of the name considered to be the 5C ...
*April 13, 2010 by Anonymous*

**socials**

canadian charter of rights and freedoms(misc.) right that say canadian ppl are allowed to move to any location of Canada? ( mobility?) # of official languages in canadian constitution agreeing with charter (that be french and english ?) this can dominate rights in charter by ...
*January 3, 2012 by Mohammad*

**SOCIAL STUDIES**

Is it true that Shah Jahan (emperor who built the Taj Mahal) was forced to cut off his hands after he built the Taj Mahal? If this is true then I need proof. I tried going on wikipedia but it doesn't say anything about that on history or any other heading. Please tell me is ...
*October 3, 2010 by Zoey*

**Math**

In the figure below, the area of the larger square is 50 square centimeters and the area of the smaller sqaure is 18 square centimeters. What is x, in centimeters? |-------| | |---| | | | | | | |-------|
*July 2, 2011 by Vidwatta*

**algebra**

A square and a rectangle have the same perimeter. The length of the rectangle is 4cm less than twice the side of the square, and the width of the rectangle is 6 cm than the side of the square. find the perimeter of each figure
*January 1, 2009 by ???E*

**Physics please check**

A bowling ball encounters a 0.76 m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictional losses and assume that the mass of the ball is distributed uniformly. If the translational speed of the ball is 3.60 m/s at the bottom of the rise, ...
*March 28, 2007 by Mary*

**College Physics**

Two children are playing on a 178.2 m ญtall bridge. One child drops a rock (initial velocity zero) at t = 0 . The other waits 2.7 s and then throws a rock downward with an initial speed v0. If the two rocks hit the ground at the same time, what is v0 ? for the first rock i ...
*September 11, 2011 by Anon14*

**LA - pls help asap!**

Questions 14 correspond to "One." 1. What is the best interpretation of the following stanza from the poem "One"? Nobody can get into my clothes for me / or feel my fall for me, or do my running. / Nobody hears my music for me, either. A. You cannot count on anybody else. B. ...
*June 3, 2014 by TTR+S<3*

**Math help**

A cafeteria has two soda machines. Once machine has the following flavors: Cola, root beer, and lime. The second machine has lemon, orange, cola, and cherry. Which set represents all flavors in the two machines. a. {Cola, root beer, lime} b. {cola} c. {cola, cola, root beer, ...
*October 27, 2014 by Abby*

**algebra. help!**

A cafeteria has two soda machines. Once machine has the following flavors: Cola, root beer, and lime. The second machine has lemon, orange, cola, and cherry. Which set represents all flavors in the two machines. a. {Cola, root beer, lime} b. {cola} c. {cola, cola, root beer, ...
*October 27, 2014 by Abby*

**Math**

I am a perfect square that is 11 more than a perfect square and 13 less than a perfect square. Which number am I?
*December 4, 2012 by Joshua*

**Algebra**

The function 5x^2+2x-1's domain is all real numbers, according to the answer key. However, I don't know how to factor this to prove it. Could you show me? The function the sq. root of y-10 has a domain of all numbers so that y is greater than or equal to zero. But I don't see ...
*November 1, 2009 by Anneliese*

**5th grade Language Arts**

I was given an assignment to add suffixes ( -ible, -ive, and -ion) to certain root words. I can't seem to find any words for post using the above suffixes. I've tried searching dictionary and roots with post. Are there any words that can be made without changing the root (...
*May 6, 2013 by Alex*

**Biochemistry**

True or False? Allosteric inhibitors always bind to the active site of an enzyme. http://www.mansfield.ohio-state.edu/~sabedon/biol1045.htm Scroll to 15 when at the site I've provided
*January 24, 2007 by Shawn*

**math**

about what percent of the total population believe saying the early bird catches the worm to be true 136,800,000 believed this to be true
*October 3, 2011 by hunter*

**English**

Given the premises, discuss whether the conclusion of each argument that follows is (a) true beyond a reasonable doubt, (b) probably true, or (c) possibly true or possibly false. Can someone please check these for me to see if I am on the right track please!!!!! Thanks. . 1. ...
*December 12, 2007 by DANIELLE*

**maths**

Consider the quadratic equation m^2 x^2 + 2(2m-5)x + 8 = 0 a) If 2 is a root of the equation, find the possible values of m (there are four possible values) b) For each value of m, find the other root
*August 17, 2013 by Jayden Haddy*

**math**

my bedroom is 15 square unit and if each unit represents 5 square feet, what is the area in square feet
*March 6, 2014 by clinton*

**math**

solve 2x^2+3x+8=0 and express the solutions in a+bi form. Let's use the quadratic formula to solve for x and express those solutions in a+bi form. x = [-b + or - sqrt(b^2 - 4ac)]/2a Note: sqrt = square root. a = 2, b = 3, and c = 8 from your problem. Therefore: x = [-3 + or - ...
*January 10, 2007 by Jimmy*

**groundwater science**

Assume that a gaining stream exists in physical connection with groundwater in an unconfined aquifer. Assume that several contour lines of equal head cross the stream and intercept it. True or False: Since the stream is gaining, the contour lines of equal head will increase in...
*February 12, 2011 by mark*

**Statistics**

A linear regression of price on square footage of homes for sale found the equation price = 30275 + 144*sqft. In this equation, the slope means A. a house with no square feet will cost $30,275. B. for every 144 square feet, average price goes up $30,275. C. for every square ...
*February 15, 2015 by Macy*

**Math **

If I have a square and I draw two lines across the middle that interestect what would be the interior angles of that intersection. I know the square itself is 360 degrees and the inner corners are all 45 degrees. I am not sure how to calculate the interior ones. ex Suppose ...
*February 1, 2010 by none*

**Precal**

The point (r,theta) in polar coordinates is (7,5) in rectangular coordinates. What is the point (2r, theta + pi/2) in rectangular coordinates? So I tried this problem and got r = sqrt(74). But while finding the value of theta, I got it equal to cot(5/7) which ends up being ...
*August 9, 2014 by Dave*