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May 4, 2016

Search: square root of (a^2+b^2)=a+b true or false

Number of results: 21,679

Physics
8. A 4.70 m long pole is balanced vertically on its tip. What will be the speed (in meters/second) of the tip of the pole just before it hits the ground? (Assume the lower end of the pole does not slip.) I did V^2=0^2+2(9.8)(4.70) and was wrong. I did remember to square root ...
April 15, 2015 by Victoria

maths
how do i solve this equation? 21(X-(1/7))^2= 3/7 thx Divide both sides by 21 Take the square root of both sides. Rewrite it as x - (1/7)= sqrt [(1/21)*(3/7)] = sqrt[(1/7)*(1/3)(1/7)] = (1/7) sqrt(1/3) x = (1/7)[1 + sqrt(1/3)] tahnks x=(2)/(7),0
July 12, 2007 by Emma

algebra
Diagonal brace. The width of a rectangular gate is 2 meters (m) larger than its height. The diagonal brace measures square root of 6. Find the width and height.
August 24, 2010 by Simone

Trigonometry
Write the trigonometric expression as an algebraic expression. 1.) SIN(ARCSIN X+ARCCOS X) ANSWER: 1 2.) SIN(ARCTAN 2X-ARCCOS X) ANSWER: 2x-SquareRoot of 1-x/Square Root of 4x+1.
February 21, 2013 by AwesomeGuy

Algebra
what is a perfect square number i know 9, 25 and 100, but what else if you multiply a perfect square by a perfect square, is the answer always a perfect square
October 10, 2007 by Cyleste

math 213
Tell whether each of the following is true for all sets A, B If false, give a counterexample. a. A-B= A-0 (with slashed O) b. AUB (with line over AUB) = AUB (with line over A and a line over B)
August 18, 2012 by susan

BIOCHEMISTRY
Mark each statment that is true or false and give reasons. you will get credit only if your reasoning is correct a) at a steady state of an enzyme catalyzed reaction, there is not net change in [S] or [P] b) the linear anomer of beta-glucose is the more reactive form c) ...
January 25, 2013 by UCI KID

Math
The least squares regression line is a unique line for each data set. True The least squares regression line minimizes the sum of the residuals. False
September 19, 2013 by Student

Algebra
Find the period of a pendulum that is 3 meters long if the period, T, of a pendulum in seconds can be found using the formula T = 2pi(square root L/9.8 find it for 2.5 meters as well. Would love to see the work, not just the answer. thank you.
October 27, 2009 by Cassie

Algebra 2 @ Steve
I have another question regarding functions, but instead if you are adding up functions that are in a radical. f(x) and g(x) are both square root of x+5. To find the domain of f+g, f-g, fg, and f/g, would I find the domain of each function...[-5,infinity)? And then what? How ...
November 2, 2013 by Serena

Geometry
An ant starts at a foot of a staircase and crawls to the base of the fourth step. If each step is 8 inches tall and 10 inches wide, how far is the ant from where it began? The answer is 6(square root of 41) or 38.4. I have no clue in how to get to that answer.
April 16, 2015 by Zunie

Trig.
sec^2xcotx-cotx=tanx (1/cos)^2 times (1/tan)-(1/tan)=tan (1/cos^2) times (-2/tan)=tan (-2/cos^2tan)times tan=tan(tan) sq. root of (-2/cos^2)= sq. root of (tan^2) sq. root of (2i)/cos=tan I'm not sure if I did this right. If I didn't, can you show me the correct steps? Thanks, ...
January 9, 2010 by Trig

English/Argument
Statement: Five prominent Democratic senators support a new farm bill. Assuming the above statement is true, what conclusions can you draw? From the list below, circle the conclusions that MUST be true, cross out the conclusions that CANNOT be true. If the conclusion can be ...
October 22, 2011 by Sun29nc

geometry
I am having a hard time determining what formula I need to solve the following: On a hexagonal window the height is 1.3m. Find the width.Do I use the pythagreom theorem (but I have only one known number) or do I use the formula 6(1/2as)? I'm confused. The book says the answer ...
August 19, 2010 by Cendrillion

Algebra
if you are looking at the horizon, you can determine the distance you are from the horizon in miles D from a height h in feet by the equation of D = 1.2 square root h if you are standing on a mountain top that is 12000 feet in elevation how far are you from the horizon. solve ...
August 27, 2013 by Rasmussen

maths (it's urgent)
the path of the rocket is represented by the equation y= root under(25-x)^2. the path of a missile designed to intrersect the path of the rocket is represented by the equation x = 3/2 root under (y). the value of x at the point of intersection is 3. what is the corresponding ...
November 4, 2008 by jess

math
how do i find the domain and range of equations? example: f(x)=ab.solute value of x-3. f(x)=square root 36-x^2 g(x)=-2x+2. do i find the range by pluggin in y for the x and then solving. for example: x=-2y+2, and then i get y=x-2/-2. and then is that how i find the range...
December 16, 2008 by Jamie Lynn

Physics
A 9000 Kiogram boat floats in a lake. If half of the boat is submerged, which of the following is true: 1. The boat is less dense than the water in the lake. 2. The buoyant force is less than half the weight of the boat. 3. The buoyant force is greater than the total weight of...
February 18, 2012 by GRISSELL

math help plzzzz!!!!
Multiple Choice 1. What is 0.32 written as a fraction in simplest form? (1 point) thirty-two over one hundred eight over twenty-five one hundred over thirty-two sixteen over twenty-five 2. If Frans fudge recipe calls for two and one-half cups of sugar and she increases it by ...
October 30, 2013 by josh

American Gov
Under Article V of the U.S. Constitution there are two ways to propose an amendment to the Constitution: by a two-thirds (2/3) vote of both houses of Congress, or by a national convention called by Congress at the request of two-thirds (2/3) of the state legislatures. True or ...
September 23, 2011 by Jason

math-geometry
The length of the hypotenuse of a right triangle equals the length of one of the legs of the triangle. a.) Always true b.) Sometimes true c.) Never true I for A for the answer is that correct?
April 16, 2010 by nicole

math
The length of the hypotenuse of a right triangle is 2 times the length of one of the legs of the triangle. answer choice: a.Always true b. sometimes true c. never true
April 16, 2010 by nicole

microeconomics
If the technology for producign a good improves and at the same time,the price of a substitute good falls, then the quantity bought and sold of the first good will increase. True, False, or Uncertain. Explain. Take a shot. Hint: draw existing supply and demand curves. Then ...
February 8, 2007 by Brittany

maths
what must the value(s) of k be so that 2xsq +(k-3)x+k-5=0 has one real root ? Two real roots? no real root?
January 7, 2016 by jawa

trig
Am I right on this? 2sec^2(2x)-8=0 2sec^2(2x)=8 divide by 2 sec^2(2x)=4 find square root sec(2x)=2 Now, would this simply be asking me to find where secant is equal to one? Or is there no solution because secan't (pun intended) be equal to anything above 1?
March 23, 2008 by Alex

math
1. 13cm=5.12in? 2. is "root21" between? 4 and 5? 3. find the square root of 25? =5? 4. John's height increased from 5'2" to 5'7" during the past year. What is the rate of increase (to the nearest whole percent) of John's height over the past year? 8%?
October 20, 2009 by Hannah

math URGENT
okay i need to find the domain and range of this z(x) = x^2 - 100 (everything is in the square root) so i think i found the domain i got [-10,10] but i dont know about the range i solved for x and got stuck here x=y^2 + 100 helppp pleaseee :)
October 29, 2009 by lyne

MaTH!!!
Let P(x,y) be a point on the curve y=16-x^2 and let A be the point directly below P on the x axis. If O is the origin, find the area and the perimeter of triangle OAP as functions of x. I got Area=x(8-1/2x^2). Is that right? And perimeter= x+16-x^2+ (square root 256-30x^2) Did...
March 9, 2012 by L.Bianchessi

Geometry
Jonathan is 3 ft from a lamppost that is 12 ft high. The lamppost and it's shadow form the legs of a right triangle. Jonathan is 6 ft tall and Is standing parallel to the lamppost. How long is Jonathan's shadow? I don't get how the answer is square root 180, Ryan?
January 11, 2012 by Anonymous

8th Grade Algebra: Radicals
Find each product. { this means the square root sign. 1. (3+2{20)(5+3{45) 2. The length and width of the rectangle are x-5 and 2x-6 a. Write a trinomial that represents that area of the rectangle. b. What is the smallest integer value of x that will give positive values for ...
January 19, 2009 by Joy

PRE-CALC
A number is selected at random from the set {2, 3, 4, ,10}. Which event, by definition, covers the entire sample space of this experiment? A) The number is greater than 2. B) The number is not divisible by 5. C) The number is even or less than 12. D) The number is neither ...
March 18, 2014 by Shawna

Math
Round the larger factor to the graetest place. 55*4 round 50 *4 993*6 rounds to 1,000*6 735*3 rounds to 700*3 1,914*3 rounds to 2,000*3 4,722*6 rounds to 5,000 495*3 rounds to 500*3 Please ,, My answers : true or false
December 1, 2014 by Nn

American History
1. In the 1920s the NAACP stuggles for equal justice for balck american by A. holding militant demonstrations B. Securing congressional action C. Forging stronger tires with the Republican Party D. Filling lawsuits in the courts -------------------------my answer b?? Because ...
April 22, 2008 by CM

Geometry - Conditional Statements/Proof
Rewire each statement as two if-then statements that are converses of each other. 18. Two angles are supplementary if and only if the sum of their measures is 180. 20. (x-4)(x+6) = 0 if and only if x = 4 or x = -6 22. Theorem 2-5 may also be worded in this way: "If alternate ...
October 8, 2009 by James

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 stacy

language could you please check my work
true(t) or false (f) 1)f reading is not a real hobby 2)f an activity that is done outdoors is not a hobby 3)t photography is a popular hobby 4)t building a cabnint can be part of a hobby 5)f cooking is never considered recreation 6)t model building is very educational 7)f ...
April 14, 2010 by marina

Calculus
Hello Everyone, I need help with Calc II. 1. Integral from 0 to 1 of (sin(3*pi*t))dt For this one, I got -1/3pi cos (9 pi^2) + 1/3pi 2. indefinite integral of sinxcos(cosx)dx I got sin(cosx) + C 3. Indefinite integral of x over (root (1-x^4))dx I don't know how to solve this. ...
January 22, 2007 by Shelley

Chemistry
so i had to calculate the pH of a 100ml solution of .10M acetic acid (ka=1.8x10(-5) I came out to 2.87. But then, they want the pH if 50ml HCL is added. So i thought...Ka = x2/.15M, therefore the square root of .15M x 1.8x10(-5) = .00164(concentration). So -log(.00164) = 2.78...
October 20, 2011 by Kevin

physics
can someone explain the answers to the question: 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 ...
September 3, 2012 by Anonymous

AP Chemistry
For the reduction of Cu2+by Zn, ∆G◦=−212 kJ/mol and E◦= +1.10 V. If the coefficients in the chemical equation for this reaction are multiplied by 2, ∆G◦=−424 kJ/mol. This means E◦= +2.20 V. True or false?
September 26, 2013 by Gabriella

Math
An exam consists of six true-or-false questions. Assuming that every question is answered, in how many different ways can a student complete the exam? In how many ways may the exam be completed if a penalty is imposed for each incorrect answer, so that a student may leave some...
September 14, 2014 by Anonymous

Math
If two sides of a triangle are proportional to the corresponding sides of another triangle, then the triangles are similar. Is this Always True, Sometimes True, or Never True?
October 12, 2009 by Chris

calculus
Please help with this. I submitted it below but no one responded. I need the first derivative of f(x)=4(x+ then the square root to include (x(8-x)), then close bracket.And then the second derivative of this to show by the second derivative test that it is a local maximum. This...
March 1, 2011 by Frank

Math/Physics
The velocity v of a particle moving in the xy plane is given by v = (6.0t - 4.0t2) i + 4.0 j, with v in meters per second and t (> 0) is in seconds. What is the acceleration when t = 3.0 seconds? When is the acceleration zero? When is the velocity zero? When does the speed ...
February 1, 2007 by winterWX

stats
The probability of receiving a false positive on a mammogram is 7%. If the patient receives 10 mammograms in her lifetime what is the probability that none of the tests come back as a false positive?
April 17, 2010 by kathryn

Physics - Assist pls!
When a certain a.c. supply is connected to a lamp, it lights with the same brightness as it does with a 12V battery a) what is the r.m.s. value of the a.c. supply? b) what is the peak p.d. of the a.c. supply? Isn't rms value the same effective value as DC? What does root mean ...
April 17, 2007 by Sola

calculus
state the power series of an appropriate familiar function and use it to calculate the power series of the given function. give answer in sigma notation. All power series have center at 0. f(x)=(e^(-x)^2) -1+(x^2) and g(x)=x cos (x/square root 3)
April 20, 2009 by pervaiz

math
1)a number of two digits is such that the digits is 11 and the number is 27 greater than the number obtained by reversing the digits. a)Find the number b)State the advantages of the mean as an average 2) use logarithm tables to evaluate to five significant figures (23,9*78....
March 15, 2013 by John Makotamo

Algebra
If the area & circumference had the same number value what is the diameter of the circle? A fraction i equivalent to 2/3. if 5 is added to the numerator than the fraction is 5/6. What was the original fraction? If y is four less than the square root of x, find x. The ratio of ...
October 31, 2014 by Amy

Algebra
If the sides of of a square are decreased by 2cm, the area is decreased by 36cm square. What are the dimensions of the original square? original square: x by x new square: x-2 by x-2 old area = x^2 new area = (x-2)^2 The difference in these area = 36 difference means subtract...
April 11, 2007 by Tony

calculus
Which of the following best describes the limit as x approaches 4 of the quotient of 2 times x divided by the quantity negative 2 plus square root of x ? It exists and equals 4 It fails to exist because it is unbounded. It fails to exist because its one-sided limits are not ...
February 5, 2014 by lisa

physic
The velocity vector V1 has a magnitude of 3.0 m/s and is directed along the +x-axis. The velocity vector V2 has a magnitude of 2.0 m/s. The sum of the two is V3, so that V3 = V1+V2 true or false for each question The magnitude of V3 can be -3.0 m/s The x-component of V3 can be...
September 21, 2010 by emma

algebra!!!! please help me!!!!
A number is called algebraic if there is a polynomial with rational coefficients for which the number is a root. For example, √2 is algebraic because it is a root of the polynomial x^2−2. The number √(2+√3+√5)is also algebraic because it is a root...
May 22, 2013 by bob

Algebra
Can someone help me figure out what formula I am to use for this word problem? I am having a hard time. If the sides of a square are lengthened by 7cm the area of the square becomes 121cm^2. What is the length of a side of the orgional square?
October 16, 2008 by Laura

Geometry-Please check my answers
I have two questions: If a parallelogram is a rhombus, then the diagonals are congruent- I don't think so in all cases-they can bisect each other and are perpendicular, correct but not necessarily congruent so this should be false? Secondly, A kite is a quadrilateral that has ...
March 1, 2011 by Mellie

Maths
Please help.... The figure is not drawn to scale. It shows two squares. the total area of two squares is 65 sq cm. the length of the smaller square is more that half the length of the larger square. given that the length of each square is a whole number, find the length of ...
May 5, 2015 by JJ.Sarah

American Government: Check my answers please
1. Self-interest is not a primary motivation for people to become involved in a capitalist economy. a. True b. False Answer: A 2. In the U.S. economy, the government does not interrupt the market economy and business transactions between companies. a. True b. False Answer: A 3...
June 27, 2011 by Cheryl

Statistics
A student studies for a statistics exam where all questions are true or false. A reputable source indicates that with studying the student has a 90% chance of answering each question correctly. There are only three questions on the test. What is the probability that the ...
November 28, 2010 by Joseph

Enghish Identify pronoun errors
1)No one is expressing their opinion. A)reference B)case C)agreement 2)They say we will not be able to afford to own houses in a few years. A)reference B)case C)agreement 3)The pronoun those is an interrogative pronoun used with singular nouns .True/False
March 25, 2014 by Mary

Math
Use the Intermediate Value Theorem to show that there is a root of the given equation in the specified interval. x^4+x-3=0, interval (1,2). According the to theorem, I found that a is 1, b is 2 and N is 0. f(1)= 2 and f(2) = 17. Is the root (1.16,0)?
September 1, 2012 by KC

Algebra 2
Ok, so I'm trying to find the inverse of each function. We're learning about Inverse Functions and Relations. The problem is f(x)=sqr.root of x/6 The sqr root is confusing me.
September 17, 2012 by claire

Trigonometry
Evaluate the sine, cosine and tangent of -7pi/3. I got 1/2, sq. root of 3/2 and sq. root of three. My book says the sine and the tangent are negative, but I don't know why? Can you explain the rule??
December 20, 2009 by Sam

Cody
Write the following with rational, positive exponents. a. sqrt of 8 = 8^1/2 b. seventh root of 5^2 = 5^2/7 c. sqrt sqrt 6 = ??? d. fourth root of sqrt of 5^3 = ??? Can someone please check my work and help with "c and d"? Thanks.
May 2, 2010 by Math (URGENT)

calculus
I have a question about the root test. If we have 5x^5 + 2 in the denominator, then does the root(1/x) apply to the whole denominator as one, for example (5x^5 + 2)^1/x or would it be applied separately. Thanks
April 28, 2012 by zuhra

Math Problem
the side of a square are lengthened by 6cm the area becomes 121cm 2 square find the lenght of a side of the original square.
March 29, 2012 by Lavern

6th grade math
How do you do square route i know a little like square route of 9 is 3 but i need more practice with square routes do you know any websites that can help.
May 2, 2013 by Annomynus

geometry
If the perimeter of a particular square is 2011 inches, what is the area of the square, in square inches? Express your answer in decimal form to the nearest hundredth.
January 25, 2011 by Molly

Math
Find the perimeter of each rectangle or square. s=sides s=34 I think the shape is the square cause the square has all even sides so 34x4=136 Is this correct?
January 17, 2012 by Connor

math
using thepythagorean theorem and if the quadrilateral with side c is a square.then compute thearea of the square with side a + b:(a) as (a + b)2 and (b) as the sum of the areas of the 4 triangles and the square withside c.
May 15, 2012 by sue

Math
Square ABCD and triangle APB lie on same base AB. If area of square is 16 cm square find ar (triangle ABP) where P is a point on side CD.
March 16, 2016 by Reyajkhan

Math
tina, troy and nate had a total of 25 equal-sized square tiles to place over a square grid. Tina used 8/25 of the square tiles. Troy used 1/5 of the square tiles. what fraction of the square grid must Nate place the tiles on so that 1/5 of the square grid is not covered.
January 19, 2015 by Anonymous

statistics
please help me to calculate this. I have gotten everything else right but I am confused on calculation. r=6(1853)-(21)(516)I can do. It is the denominator that I am having a problem with. Square root[6(79)-(21)squared][6(44582)-(516)squared] I have worked with this for over to...
June 11, 2010 by Barbara

Calculus
The rate of growth dP/ dt of a population of bacteria is proportional to the square root of t with a constant coefficient of 9, where P is the population size and t is the time in days (0t10). The initial size of the population is 700. Approximate the population after 7 ...
November 9, 2015 by Beth

Maths Problem
Anyone, Please Help me. the figure is not drawn to scale. it shows two squares. the total area of two squares is 65 sq cm. the length of the smaller square is more that half the length of the larger square. given that the length of each square is a whole number, find the ...
May 5, 2015 by Sarah JJ

sociology
How a person respond to this type of statement? I am not sure how I would respond to this statement. Do you have any suggestions to how one might respond? Is this true or a false statement? (I think it might be a true statement) We all hold different statuses among society. ...
May 1, 2011 by Sharon

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 Anonymous

algebra solving log equations
n sqrt(x-8)= 5 I would like help to solve this what i did was to take away the square root i squared both sides coming up with (ln sqrt(x-8))^2= (5)^2 ln(x-8)=25 am i alowed to do this with ln in the equation? then i subtract 8 from both sides ln x = 17 e^(ln x)= e^17 e ...
October 30, 2013 by Marcos

Math Help
The sides of a square are increased by a scale factor of 7. The perimeter of the smaller square is 16 ft. What is the perimeter of the larger square? A.4ft. B.28ft. C.56ft. D.112ft. Is the answer B?
November 20, 2014 by callie

math
If each square unit represents 5 square feet, what is the area of Elain's bedroom in square feet? Use repeated addition. can you please show the work?
February 4, 2015 by Jamar

literature
True or False? The "Chimney Sweeper" in Blake's Songs of Innocence has good life circumstances while the "Chimney Sweeper" in his Songs of Experience has bad life circumstances.
January 15, 2011 by dontdelay

computer science
is it true or false A fixed length hash value of 128 bits is less collision resistant than a fixed length hash value of 512 bits
June 26, 2011 by Roger

Math
Hi! I need help with these two questions. Thanks! :) 1.) Can we multiply the Matrix A (which is 3 x 4 matrix) by the other matrix, Matrix B (which is 3 x 4 matrix)? True Or False? 2.) When we multiply the 6 x 3 matrix by the 3 x 1 matrix, the final matrix would be in what ...
March 26, 2015 by Emily

geometry
the ratio of the perimeter of two similar squares is 5 to 4. If the area of the smaller square is 32 square units, what is the area of the larger square?
March 7, 2011 by sammy

Math
The ratio of the perimeters of two similar squares is 5 to 4. If the area of the smaller square is 32 square units, what is the area of the larger square?
May 6, 2011 by Keyonna

English
Antonyms of: Careful: False: ignorant: A: uneducated B: reckless C: intelligent D: untrue E: Genuine I think careful is B false: E ignorant: A
July 28, 2012 by Emma

World Studies
True or False. A democratic form of government is one in which a president holds the most power. http://www.answers.com/democracy Read carefully. =)
February 7, 2007 by Emily

Computer Science
I need help with this question please! Please write me step by step instructions or how should I begin the problem. Thank you for your time ;) Write a function that takes an array and returns true if all the elements in the array are positive, otherwise, it returns false.
January 21, 2013 by nutz

Algebra
The side of a square equals the length of a rectangle. The width of the rectangle is 4 meters longer than its length. The sum of the areas of the square and the rectangle is 48 square centimeters. Find the side of the square
December 6, 2010 by Scott

college algebra
Solve: sq root of (x+1) minus 3 = sq root of (x+4) when I solve it I get zero, but when I plug it back in only one answer works. do both have to work for it to have a solution?
March 3, 2011 by Brenda

Math
Use graphing utility to graph function and estimate the limit. Use a table to reinforce your conclusion. Then find the limit by analytic methods. lim (sq root of (x+2) - sq root of 2) / x x->0 Thanks!
August 16, 2014 by Dameon

math
Find the values of theta (0,2pi) that satisfy sin theta= square root 3 over 2 Solve 2costheta sintheta-sintheta on (0, 2pi) please I really need help in knowing how to solve these questions. quite urgent. I dont understand how to do them at all.
December 13, 2013 by Temmick

reading
What is the suffix, root, and prefix of the word compressions ? I think it is: Prefix- none Suffix- ions Root- compress Am i correct?
September 15, 2015 by lana

algebra
The sample size needed to estimate the difference between two population proportions to within a margin of error E with a confidence level of 1- alpha can be found by using the equation shown below. Replace n1 and n2 by n and solve for n. E= z alpha/2 square root p1q1/n1 + ...
October 30, 2013 by Mario

Grammar and Composition
please check: identify and label the following as a prefix, root word, or suffix. give the meaning of each. ed: suffix: past tense of a verb sion: suffix: condition or state of being macro: prefix: large, excessive retro: prefix: backwards ultra: prefix: beyond what is natural...
October 14, 2009 by y912f

physics- response to bobpursley
which is false? Consider the following processes: I. Energy flows as heat from a hot object to a colder object II. Work is done on a system and an equivalent amount of energy is rejected as heat by the system III. Energy is absorbed as heat by a system and an equivalent amount...
June 24, 2009 by matt

Biology
***I read the textbook assignment and I have read all the information on the lesson, however I cannot find the answer to this question. Nor can I find anything written about it anywhere in the lesson. Please help a girl out.*** True or False? There are many origins of ...
December 19, 2013 by Erin

Math
A student takes a true-false test exam with 10 questions. If the student guesses all ten questions, find the probability he gets 7 or 8 right. p(x=7) + p(x=8) (.5)^7(.5)^3 + (.5)^8(.5)^2 I have the correct answers which are .117+.044= .161 But when I calculate the answer on ...
March 30, 2016 by Chris

Alegbra
The area of the smallest (shaded) square measures 1 square unit. What is the area of the largest square? (there are 7 squares) Please help me!!!
November 14, 2011 by Audrey

math
the area of a squre is 9 square yards. 3x3x3x3 what is the are of the square in squar feet? i got 81 square feet is that right?
February 16, 2012 by marko

math
a square has sides of 9 inches. A second square is going to be drawn with a scale factor of 3. What is the area of the second square?
March 3, 2012 by vanessa

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