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

24,598 results, page 52

Math

Decide whether the given statement is always, sometimes, or never true. The domain of a rational expression and any simplified form are equivalent. a. sometimes true b. never true c. always true

statistics

two samples are considered independent if the sample selected from one population is not related to the sample selected from the second population. true or false

English

A Works Cited is a list of sources used in your research; a bibliography is a list of sources referenced during your research. • true<--- my answer • false

statistics

True or False For any normal distribution, the proportion corresponding to scores greater than z = +1.00 is exactly equal to the proportion corresponding to scores less than z = 1.00.

Math

If you had an equation zero is less than or equal to 2 would you say that's true because 0 is less than 2 or false because it isnt equal to 2? What would I write down if it asked for T or F

science

if a magnet is moved in and out of a coil of a copper wire, electrcity begins to flow through the coil. True or False If the coil is in a closed circuit then electricity will flow, if not there will be only an induced emf.

Chemistry

True or False? a) wet metallic copper can be rinsed with acetone to help any remaining cation to metal reduction occur b)copper metal is readily oxidized by nitric acid to yield copper(II) nitrate

Physics

Answer True or False to each case. Coulomb's law states that the force between static charges Q1 and Q2 is proportional to Q1 Q2. is proportional to the total charge Q1+Q2. is K Q1Q2/r where K is a universal constant. is proportional to 1/r2. is a force of attraction.

statistics

True or False: A zero population correlation coefficient between a pair of random variable means that there is no linear relationship between the random variable.

math

true or false. an aquarium which is 4 ft. x 5 ft. x 3 ft. high can hold 800 gallons of water. (assusme that one cubic foot of space hold 7.5 gallons of water.)

algebra

A set of 2 similar triangles was drawn in a design. One of the triangles was ½ of the other. If the measures of the smaller triangle were 5, 7, and 12 cm, the measures of the larger triangle = 10,14 and 20 cm. true or false

physics

these values were obtained as the mass of a bar of metal: 8.83g 8.84g 8.82g the known mass is 8.83g the values are both accurate and precise- true or false

science

The muscles of a very active organism would contain more mitochondria than the muscles of a less active organism. Select one: True False

Health

The following is a health benefit of a nicotine substitute: It is cheaper than regular cigarettes so you can still get the benefit of nicotine at a lower cost? True.) False.)MY ANSWER

math

which of he following statements are true or false- 1]the diagonals of a parallelogram are equal 2]the diagonals of a rectangle are perpendicular 3] the diagonal of a rhombus are equal 4]every rhombus is a kite

math (caculus limits)

If for every ε > 0 we can find a δ > 0 such that if 0 < |x − a| < δ then |f(x) − L| < ε, then we can say lim x→a f(x) = L. true or false?

stats need help

If all the values in a data set are converted to z-scores, the shape of the distribution of the z-scores will not be the same as the distribution of the original data. True or False?

biology

true or false.. 1) A mature pine tree produces either male or female cones (F) 2) Virtually all of our food is derived, directly or indirectly from flowering plants. (T) 3) In vegetative reproduction, new plants may be generated from stems or roots. (F)

Interpersonal Communication

True or False: Americans tend to look at others above the neck or below the knees. Looking at other parts of a person’s body is considered impolite, while looking at anyone for more than three to five seconds can be interpreted as staring.

communication

6. Americans tend to look at others above the neck or below the knees. Looking at other parts of a person’s body is considered impolite, while looking at anyone for more than three to five seconds can be interpreted as staring. (Points : 1) True False

Science-3 questions.

Which of the following best describes the climates of Europe and North America during the 1.8 million years of the Quaternary period? hot and dry cool and rainy periods followed by droughts warm and mild a series of ice ages followed by periods when the glaciers melted Which ...

english

The square root of the lava lamp is champagne, and the ace of spades is tattooed on the wrist of the man who invented the poker chip. Assuming poker chips are round, what will this man's last words be?

Algebra 2 help

1. (3ã6 * 4ã6)^12 Answer :6^7 2. 3ã9 * 3ã6 / 6ã2 * 6ã4 Answer: 3 Can you guys show me how to work those? I got the answers from back of the book, but I have no idea how to work it. The number behind the square root sign is the nth.

Physics

The general relationship of oscillation T of a mass m suspended on a spring is T=2(pie)square root of m/k, where k is the spring constant. how would i change this equation into a straight line equation to graph?

lgebra

the time T in second for a pendicular of length L feet to make one swing is given by t =2pie square root L over 40 How long is the perpendicular if it makes 1 swing in 1.9 second use 3.14

Geometry

I have to find the area of a triangle. The base is 22 The height is 11 square root 3... for this, it was 19.052... I rounded that to just 19. Was this okay??? I then get 418, divided by 2, and got 209 as the area. Was it accurate that I rounded that number?

Algebra 1

To which subset(s) does the number –square root of twenty belong? Choose all that apply. (Irrational Numbers (Rational Numbers*** (Integers*** (Whole Numbers (Natural Numbers The maximum of choices is 2

Mathamatics

True Or False Questions: The term insurance has no value as an investment and is the least expensive type of life insurance. Liability insurance protects a homeowner against injury to other people on his property. After these my math is done. Someone please help me. Thank You.

Health please check my answer

Please check my answer thanks True or Faslse The term used to describe why medical treatment is necessary is procedure I say False

biostatistic

Is this statement true or false: when calculating correlation coefficient between two continous variables, the scale on which the variables are measured affect the value of the correlation coefficient.

science

during radioactive decay atoms of a radioactive element break down and change into other atoms of another element-all at once a) true b) false

HELP? Health

Because of the Health Insurance Portability and Accountability Act (HIPAA), privacy and security of health information technology are not a concern in regional health information organizations. True False

Math

A population with μ = 59 and s = 8 is standardized to create a new distribution with μ = 100 and s = 20. After the transformation, an individual receives a new score of X = 90. The original score for this individual was X = 51. True or False

Math please

The HCF of the smallest composite number and the smallest prime number is 1.is this statement is true or false.give reason.please

Social Studies

Lake Huron is the northernmost Great Lake False? Lake Ontario is the closest Great lake to ottawa canada True?

Algebra

I don't get how you would know which way to shade the inequality when it's true or false. For example the inequality 2x+3y> 12 When I solve it it's y>-2/3x+4 But when I graph the line how would I know which side to shade?

Statistics

True or False If a sample of at least 30 scores is randomly selected from a normal population, the sample mean will be equal to the population mean.

south high

a rate of markup of 50% based on selling price is the same as a rate of markup of 100% based on cost. True or False

Math - Intro to Statistics (High School)

The average square footage in an apartment in a town is 1,800 square feet with a standard deviation of 120 square feet. The square footage is normally distributed. You randomly select 10 apartments in the town. What is the probability that the mean will be more than 1900 ...

calculus

Let f(x)= Cube root(x + 2) and g(x) = x^3 - 2. Which of the following are true? I. g(x) = f^-1(x) for all the real values of x. II. (f£»g) (x) = 1 for all reak values of x. III. The Function is one-to-one.

I need help..

1. Diarrhea can be caused by a change in diet and different minerals in the water. True False 2. Fusion produces less radioactivity than fission. True False 3. Wise travelers eat only cooked vegetables in underdeveloped areas. True False 4. The kilogram is the basic unit of ...

precal

when i do the quadratic equation i get -17 plus or minus the square root of 193 all over 2. where do i get the two "cos 3x" roots?? solve the equation to the nearest tenth, where 0 degrees < or equal to x which is < 360 degrees. 8cos^2 3x-17cos3x+3=0 this doesnt factor, ...

Strategic Management

Effective strategic management involves all levels of management. True of false

Calc Help

Find the derivative. Express answer in radical notation with no negative exponents. s=4(sqroot t)+(3/t)+2t^5 This reads (4 times the square root of t) plus (3 divided by t) plus 2t to the 5th. Differentiate it one term at a time, using the rule: d/dt(t^n) = n*t^(n-1) s(x) = 4 ...

Math

The diagram: it is a large triangle labelled ACD(AC a line horizontal, then AD and CD joining at the tip going down-so the triangle is "upside down" with the base up) with a line drawn that connects point E, which intersects segment CD at the middle(a median), with point B, ...

Earth Science

True or false? ------------------------- Although there is scientific evidence and many scientific theories about the origin of the universe, how it all happened remains a question. Which statement is true? ------------------------- The perfect cosmological principle is the ...

microeconomics

The positive contribution of politics in the determination of economic policy is that it takes market failures and failures of market outcomes into account when formulatiing policy. True or False

statistics

The number of defects in a random sample of 200 parts produced by a machine is binomially distributed with p = .03. Based on this information, the expected number of defects in the sample is 6. Is it True or False?

chemistry

What is the oxidizing agent in the following reaction? Sn(s) + 2HCl(aq) → SnCl2(aq) + H2(aq) HCl H2 Sn SnCl2 . Question 2 The following is an oxidation-reduction reaction: H2CO3(aq) → CO2(g) + H2O(l) True False

Chemistry

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 ...

math

There are 27,878,400 square feet in one square mile. How many square feet are there in 35 square miles? Estimate by rounding the number of square feet in one square mile to the nearest ten million and the number of square miles to the nearest ten. Also find the exact answer

math

If "today is Monday" is true and "It is May 5th is false, which of the following is false? 1 - Today is Monday and it is not May 5th. 2 - If today is Monday, then it is May 5th. 3 - Today is not Monday only if it is May 5th. 4. Today is not Monday or it is May 5th.

Will somebody help me please?

1. Diarrhea can be caused by a change in diet and different minerals in the water. True False 2. Fusion produces less radioactivity than fission. True False 3. Wise travelers eat only cooked vegetables in underdeveloped areas. True False 4. The kilogram is the basic unit of ...

math just practice

Sr = SQUARE ROOT 1. What is the solution to -75 sr to the nearest integer? (1 point) 9 8 -8 -9 2. Shelly sews a blanket that has an area of 170 square feet. It has 30 square blocks, each the same size. What is the approximate length of each side of a block? (1 point) 1 foot 2 ...

Physics

in the equation w= fd it is assumed that the force varies and is exerted in the direction of displacement... true or false? Yes. Force is measured in the direction of displacement.

math

TRUE OR FALSE (x+y)+2=2+(x+y) is it associative property? (2*3)*5=(3*2)*5 is it commutative property? (X+3)4=4X+12 is an example of the distributive property of multiplication over addition (10+y)+z= 10 +(y+z) is this associative property?

science

the force of gravity between two objects decreases as the distance between the two objects increases. true or false

Astronomy

Sometimes a crater from the Noachian period can be found inside of a crater from the Amazonian period. Probably true Maybe Probably false.

Algebra1

John is working the function s(x). He found that s(2)=-6 Matthew is working with the function t(x). He found that t(2)=-6 The point (2,-6) lies on the graph of s(x) and t(x). True or False?

True/False-2

A function can be continuous at every point of a deleted neighborhood of some point and still not have a limit at the point which is deleted. I'm not even too sure what this means in calculus terms. Can you please explain it better? Thank you.

economics

True or False 1.Total output may continue to rise even though the marginal physical product (MPP) is decreasing Think about it, then take a shot. Hint: while MPP is decreasing, can it sign still be positive?

Linguistically & Culturally Diverse Learners

In order to promote language acquisition in beginning language learners, teachers should require students to speak, even if only one or two-word phrases. (Points : 1) True False

Math plz help someone.

Which of the following is a possible measure of the area of a square rug? • 18 square feet • 24 square feet • 36 square feet • 48 square feet Based on your answer to the previous question, what would the length of one side of the rug be? • 4 feet • 6 feet • 8 ...

Algebra

For what value(s) of b will x^2 + bx + 3 have exactly one root? I'm rather new at this but wouldn't b=2*sqrt(3) give (x+sqrt3)2 as factors and that would give one root? Check my thinking. for a quadratic equation to have exactly one root, the discriminat must be zero i.e if ...

American History

True of False??? 1. The Soviets desperately wanted the Allies to open a second front in North Africa to relieve German pressure on the Soviet Union. --------------------my answer: True Becayse in the autumn of 1942, the Russians were tenaciously holding out at a city on the ...

english

root word :lantry The definition of root is: worship A word using this root is: autolantry the definition of autolantry ,I cant find it ,can you help me look it up the definition or find another word using the root .thank you

Math

Darby guesses the answers to six questions on the math portion of her college entrance exam. Each question is a true or false question. What is the approximate probability that at least 4 of her answers are correct? A. 0.23 B. 0.34 C. 0.66 D. 0.78 Is it B?

Math

Darby guesses the answers to six questions on the math portion of her college entrance exam. Each question is a true or false question. What is the approximate probability that at least 4 of her answers are correct? A. 0.23 B. 0.34 C. 0.66 D. 0.78

Probability

Darby guesses the answers to six questions on the math portion of her college entrance exam. Each question is a true or false question. What is the approximate probability that at least 4 of her answers are correct? A. 0.23 B. 0.34 C. 0.66 D. 0.78

Math

when testing for a fever, what is the true positive rate for a thermometer that always reads 105 F? What is the false positive rate? **Note: the definition of fever is that the patients temperature exceeds 100 F**

Math (check answer plz)

13. A true-false test has 12 questions. What is the probability of guessing the correct answers to all of the questions? (1 point) A: 1 over 4096*******? B: 1 over 144 C: 1 over 24 D: 1 over 14

general

According to Gardner, intelligence quotient (IQ) is the only barometer as to how students will succeed outside of school. A. The statement is true. B. The statement is false. C. The statement did not originate from Gardner. D. The statement is partly accurate.

Health

The following is a health benefit of a nicotine substitute: it is cheaper than regular cigarettes so you can still get the benefit of nicotine at a lower cost. true false** I have no clue. can someone please help me?

To: Economyst

Hi there. You helped me with a couple of questions regarding Econ. I appreciate the help but my issue is I don't understand how you calculate the minimum average variable cost or the output that maximizes profit. I do understand that the price is more than the AVC so they ...

CALCULUS!! OH DEATH!!!

I need to solve: Lim as x is approaching 1/4, for (4x-1)/(1/ ([square root of x] minus 2)). Help would be greatly appreciated!!! It's trivial using L'Hopital's rule. Answer: -64 Correction, the answer is -1. what is l'hospital rule?

Variation

Please check my work, the answer I am suppose to get is 17.5, but instead I got 2.5. Solve the problem. 66. y varies jointly as a and b inversely as the square root of c, y=24 when a=6,b=4, and c=49. Find y when a=2, b=5, and c=16. -I got: y=kab/ sqrt of c, y=2*5/ sqrt of 16, ...

calculus

Suppose that f(x)= square root of x and g(x)= 3x-4 and you are asked to evaluvate the composite function f(g(0)). What is the complication that occurs in trying to find that composite function value? For waht values of x is it possible to evauvate f(g(x))? Please help me with ...

Linear Algebra

Let L be the line with parametric equations x = 1−2t y = 3+3t z = −1−3t Find the shortest distance d from the point P0=(1, −4, −2) to L, and the point Q on L that is closest to P0. Use the square root symbol '√' where needed to give an exact value for your answer. ...

Please guys. Help me out.

1. Diarrhea can be caused by a change in diet and different minerals in the water. True False 2. Fusion produces less radioactivity than fission. True False 3. Wise travelers eat only cooked vegetables in underdeveloped areas. True False 4. The kilogram is the basic unit of ...

Algebra II

Write the simplest polynomial function with the zeros 2-i, square root of 5, and -2. I know that the conjugates are 2+i and -the square root of five, but when I multiply it comes out wrong. not sure A toy rocket is launched from the ground level with an initial vertical ...

Calculus-math

Find an equation of the line that is tangent tothe graph of f and parallel tothe given line. Function: 1/square root of x Line: x+2y-6=0

math please help?! studying for test!!

If x = 9tanθ, use trigonometric substitution to write square root 81 + x^2 as a trigonometric function of θ, where -pi/2 < θ < pi/2

Math

A printing company makes plastic banners 15 feet long by 6 feet wide. An overseas customer wants to know about how many square meters the banner is. Use 1 foot = 0.305 meter. a 8.37 square meters b 27.5 square meter c 90.0 square meter d 900 square meter Is c the correct answer?

Chemistry

EQUILIBRIUM: To prepare the standard solution, a very large concentration of ferric ion is added to a small initial concentration of thiocyanate ion. True or False It would help if we knew what you were doing. We are determining Chemical Equilibrium: Finding a Constant Kc... ...

CHEMISTRY HELLPPP!!!!!!

Water is often instrumental in promoting disproportionation reactions however, it cannot itself disproportionate? IS THIS TRUE OR FALSE????? Water does this "ionization" reaction to a very small extent 3H20 <---> H3O+ + 2OH- This only occurs in 1 in 10^7 molecules. So ...

anatomy physiology/check please

Muscular dysgenesis or dysgeny is a lethal, recessive, genetic disease of mice that is caused by a mutation in the mdg gene. Skeletal muscles from dysgenic mice are paralyzed and the animals die shortly after birth. You are a research scientist interested in the finding the ...

Economics

Pat and Kris are roommates. They spend most of their time studying, but they leave some time for their favorite activities: making pizza and brewing root beer. Pat takes 4 hours to brew a gallon of root beer and 2 hours to make a pizza. Kris takes 6 hours to brew a gallon of ...

Math

of the following is a possible measure of the area of a square rug? • 18 square feet • 24 square feet • 36 square feet •• • 48 square feet Based on your answer to the previous question, what would the length of one side of the rug be? • 4 feet • 6 feet • 8 ...

Chemical

Which is the theoretical effusion of NH3 and the theoretical effusion of HCl? The rate of effusion is proportional to 1/(square root of the molar mass).

mathematics

Given that A + B = 120 degrees and cosA + cos B = 1 divided by squareroot of 2,show that cos A-B divided by 2 = 1 divided by square root of 2

Chem

Explain the difference between root mean square (r.m.s.) speed and mean speed.Why is r.m.s. speed a more useful quantity?

algebra

Replace each equation with constants to complete the square and form a true equation x^2+2x+--=(x+---)^2

College Algebra

I have a few more questions that I'm not understanding. Its multiple choice however I would appreciate a breakdown on how to solve. 1.Evaluate without a calculator, using the order of operations. -2^2+20-|8-20|-squareroot of 64 a. -36 b. 4 c. 28 d. -4 2.Simplify the expression...

Spanish

Todays homework 1. ¿Qué comerás esta noche, Pepe? Comerá pizza. Comerás espagetis. Comeré lo que prepara mamá. Comere un sandwich. 2. ¿Qué va a hacer Paquito hoy? Irá al cine conmigo. Estudiaré en casa. Venirá al partido de futbol. Dormirás todo el dia. 3. ¿Qué ...

statistics

A false positive rate of 5% is considered to be a conservative estimate. Suppose that there are 20 employees in your company, which tests its workers weekly. What is the probability of no false-positives for this week’s test?

Science Somebody Help Me Please..I have a deadline

1. Diarrhea can be caused by a change in diet and different minerals in the water. True False 2. Fusion produces less radioactivity than fission. True False 3. Wise travelers eat only cooked vegetables in underdeveloped areas. True False 4. The kilogram is the basic unit of ...

OCEANOGRAPHY HELP

The deep oceans can be divided into about 20 separate basins by bathymetric features. Is this true or false. I can't seem to find out the "20" part. I know the bathymetric features part is correct. Please help if you can.

Whole grains and refined graines

Whole grains or food food made from them,contain all the essential parts and naturally-occurring nutrients of the entire grain seed. True or false

Computer Science

when testing for a fever, what is the true positive rate for a thermometer that always reads 105 F? What is the false positive rate? **Note: the definition of fever is that the patients temperature exceeds 100 F**

Math

1.) Can a system of linear equations have exactly two solutions? A. True B. False 2.) The solution of a system of equations with no solution describes what kind of lines? a.) parallel b.) perpendicular c.) skew d.) coincidental

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