# Posts by ANONYMOUS

Total # Posts: 106,778

**Physics **

when tuning a piano, amusician plays a note that should be at 110Hz while at the same time tapping a 110Hz tuning fork and holding it next to the strings. He hears beats at 4Hz. (A) state and explain what frequencies the piano could be producing (b) explain how the musician ...

*January 3, 2017*

**Math**

18.3

*January 3, 2017*

**Math**

The difference between two whole numbers is 15. One of the numbers is 1. There are two possibilites for the second number. What are they?

*January 3, 2017*

**Science**

Depletion of what has been halted by a ban on the manufacturing of what

*January 3, 2017*

**English 6th**

Dissection sentences according to part of speech

*January 3, 2017*

**Math**

f(x)=(1+x)/(1-x),g(x)=x/(1-x), find the simplest form of f[g(x)] and state the domain. My work: (1+ (x/(1-x)))/(1-(x/(1-x))) (1+x)/(1-x)/(1-x)/(1-x)

*January 3, 2017*

**math coordinate geometry**

Find the 3rd vertex of a triangle ABC.If 2vertices are A(-4,3),B(4,3)and its centroid is at orFind. Find 3rd.

*January 3, 2017*

**Math**

B and 19-B B+2 = 2(19-B) B+2 = 38 - 2 B 3 B =36 B = 12 then 19-B = 7

*January 3, 2017*

**Math for 5th graders**

Alice has a paper weigh in the shape of pyramid.Its height 6cm lenght 5.2cm and width is 4.9cm.What is the volume

*January 2, 2017*

**math**

the difference between two whole number is 26 and one number is three times the other then the smaller number is..........my work x-y=26,3x_y=26

*January 2, 2017*

**MATH**

10^(log10 A) = A = 10^4 = 10,000

*January 2, 2017*

**science**

Melody.s is right

*January 2, 2017*

**science**

Melody.s is right

*January 2, 2017*

**science**

Is Melody.S correct?

*January 2, 2017*

**science**

i just took a quiz on this and it said the correct answer is B and C.

*January 2, 2017*

**science**

The Hoover dam is a hydroelectric power plant that converts the energy of falling water into electricity. Which of the following determines the amount of potential energy of the water stored in the reservoir of the dam? Choose all that apply. A.the electric potential energy of...

*January 2, 2017*

**Algebra**

Thank you Reiny for helping I was having trouble solving these problems.

*January 2, 2017*

**math**

cost= .18 per minute x 60 minutes

*January 2, 2017*

**Statistics**

Add a carnival, you play ring toss game 30 times. It's only a dollar to play, and your chances of winning the five dollar prize are advertised at 15%! What are your expected winnings?

*January 2, 2017*

**American government**

the bg5r2vwbbyv###76wrwa3#2q34wewqax@3w3#

*January 1, 2017*

**Maths**

the value of a machine depreciates every year by 5% .if the present value of the machine is 100000 ,find the value after 2 years

*January 1, 2017*

**Math**

Use the table below to evaluate the d/dx[g(f(3x))] at x = 1. x 1 2 3 4 f(x) 6 1 2 2 f ?(x) 6 1 10 2 g(x) 1 4 4 3 g ?(x) 4 5 7 –4 My work: D/Dx(g(f(3x)))= g'(f(3x)) * f'(3x) * 2 D/dx (g(f(3*1)))) g'(f(3*1))*f'(3*1) *2 4*3*2=24 I know 24 isn't the right ...

*January 1, 2017*

**physical science**

if the acceleration is constant (In other words if velocity is proportional to time)the final speed is twice the average speed. Vfinal = 2 (107/26) m/s

*January 1, 2017*

**math**

To what value does the sum 20+12+36/5---tend as n.

*January 1, 2017*

**chemistry**

Name two metals which are obtained by reducing thier oxides by heating with aluminium How is the metal oxides present in calcined/roasted ore reduced to the metal

*January 1, 2017*

**chemistry**

Name two metals which are obtained by reducing thier oxides by heating with aluminium How is the metal oxides present in calcined/roasted ore reduced to the metal

*January 1, 2017*

**math**

Draw a parallelogram of diagonals 5cm and 7 cm and one angle as 60 degrees

*January 1, 2017*

**science**

water?

*January 1, 2017*

**math**

length 60cm,breadth45cm,volume 54dm find height

*January 1, 2017*

**Math**

3x + 5x + 7x = 45 15x = 45 x = 3 A = 9 B= 15 C = 21 9(7) + 15(10) + 21(13)=486 486/45 = cost/kg 10.8 cost/kg for the mix.

*December 31, 2016*

**Chemistry**

Iron+CON Hydrochloric acid =?

*December 31, 2016*

**english**

I can't seem to find the relative clause in this sentence, can someone help me? Thanks. "Fables that were written by Aesop usually feature speaking animals."

*December 31, 2016*

**Math**

All five members of the Malone family went to the movies their tickets cost a total of $30 how was each ticket

*December 30, 2016*

**Algebra**

X nickels. (28-x) dimes. 5x + 10(28-x) = 260 cents. X = ?.

*December 29, 2016*

**Math Trigonometry**

An airplane is flying between two towns at an altitude of 8km. One town is to the west of the plane and the other is to the east. The angle of depression to one town in de34grees and to the other town is 49degrees. What is the distance between the two towns

*December 29, 2016*

**Language Arts**

I am writing a poem and my teacher told me not to use secondary pronouns like you and your. Does anyone know how I can replace those words?

*December 29, 2016*

**science**

w YoState, most of the surface bedrock was formed as a result of which process? a. deposition of sediments into a vast of sea. b, folding of non sedimentary rock. c. metamorphism of sedimentary rock. d. intrusion of magma into sedimentary rock.

*December 29, 2016*

**Math**

Whats x to the 3 y to the 6 divided by x to the 3 and y to the 6?

*December 29, 2016*

**asthmatics**

Find the volume of the wood required to make an open box of internal dimensions 20cm by 12.5cm by 9.5 cm.the wood being 1.5cm thick.

*December 29, 2016*

**Math**

A copper solid cylinder of radius 14cm and height 10cm is melted and recast into cylindrical wire of diameter 4mm.find the length of the copper wire

*December 29, 2016*

**Riddle**

What has eighty eight keys, can't open a door

*December 29, 2016*

**Science**

What will be the final temp of the ice of 20g when it is heated to 1600 Cal

*December 29, 2016*

**American Goverment**

1.C 2.C 3.A 4.B 5.C 6.A 7.D 8.A

*December 29, 2016*

**Calculus**

How do I find the limit of x/x as x approaches 0?

*December 28, 2016*

**maths**

One hundred and twenty five cubes, each of side 1cm, are placed on a table to form a solid cube. The length of the edge of the cube in (cm) is A) 5 B) 25 C) 125 D) 1 please explain how you got the answer, thanks.

*December 28, 2016*

**Math**

By selling a watch for rupees 475, jatin suffer a loss of 5percent. At what price should he sell the watch so as to gain 12 percent

*December 28, 2016*

**Math**

I saw MRP of rs 15.50 of biscuit. What does it mean?

*December 28, 2016*

**Math**

the sum of two numbers is 30. the difference of their squares is 180. find the two numbers by elimination method

*December 28, 2016*

**English**

Write an interesting story based upon the title the tiger who came to visit me in about 150to 200words

*December 28, 2016*

**Analysis**

Which of the following words is least like the others rotator,deified,racecar,alright

*December 27, 2016*

**Math**

4 students did work for me making $5 an hour working 6 hours a day for 12 weeks. 1 student worked for 4 weeks and one student quit after 8 weeks. 2 students worked 12 weeks. What is the total amount for all students?

*December 27, 2016*

**Social studies**

1. C 2. c 3. C 4. C 5. D 6. A and D 7. B 8. C 9. C 10. B 11. B 12. B 13. A 14A. C 14B. B 15. D 16. A 17. B 18. C 19. C 20. B 21. C 22. Essay

*December 27, 2016*

**trig prove plz anyone help**

41

*December 27, 2016*

**Math**

Find the number of years needed to realize a total interest of $5000 if the principal saved is 10000 at a simple interest rate of 10%

*December 27, 2016*

**math**

A car moving with the speed of 22 decmetre per second find the diametre of the wheel if it performs 700 revolutions per second

*December 27, 2016*

**math**

Marie bought 8 pounds of applesbfor 0.82 per pound and paid for them with a ten dollar bill. How much should she get back in change

*December 26, 2016*

**Math**

Suppose there are B books and T tables If he puts 9 books on each table he will have two tables left vacant. B = 9(T-2) If he put 6 books on each table he will have 3 books left over. 6T+3 = B 6T+3 = 9(T-2) 6T+3 = 9T-18 21 = 3T 7 = T 6T+3 = 6(7)+3 = 42+3 = 45 = B So there are ...

*December 26, 2016*

**Math**

Which of the following ratios is not equivalent to the other two?

*December 26, 2016*

**Chemistry**

Discuss the expansion of an ideal gas and changes in thermodynamic properties (3 marks)

*December 26, 2016*

**corrections**

Most state correctional systems leave the majority of correctional problems in the state to units of local government, concerning themselves instead with the principal institutions and

*December 25, 2016*

**solar homework**

We have discussed that a bare crystalline silicon surface contains many defects which act as SRH recombination centers. How can the surface recombination at the air/n-silicon interface be reduced? Note that you can mark more than one answer. By decreasing the doping of the n-...

*December 25, 2016*

**Maths**

A {19} B {27} C {17} D {34}

*December 24, 2016*

**mystery**

There are 15 students on a yearbook committee. 40% of the students are females. How many students on the committee are males?

*December 23, 2016*

**mystery**

18% of what number is 63?

*December 23, 2016*

**mystery**

16% of what number is 17?

*December 23, 2016*

**mystery**

45% of what number is 17.1?

*December 23, 2016*

**mystery**

42% of what number is 0.21?

*December 23, 2016*

**HELP PLEASE**

Write a translation rule that maps point D(7,-3) onto point D'(2,5). I though it told you left, right, up or down, how do I figure this out?

*December 23, 2016*

**trigonometry**

if secA-tanA =10 than sinA =?,cosA =?,secA =?

*December 23, 2016*

**physics**

What should be the minimum initial velocity with which a missile has to be launched so that it reaches a target of 1000km away in the same plane

*December 23, 2016*

**math**

0Âºâ‰¤Aâ‰¤90Âº and 3tan2A = 2tanA + 1

*December 22, 2016*

**Math**

a + b = 7 2/4 which is 7.5 a - b = 5 2 a = 12 2/4 a = 6 1/4 b = 7 2/4 - 6 1/4 = 1 1/4

*December 22, 2016*

**Statistics**

The monthly salaries (in thousands of dollars) of a sample of sales representatives are as follows: 13, 7, 10, 9, 8, 13 Find the standard deviation of this sample of monthly salaries. Round your answer to at least two decimal places.

*December 22, 2016*

**algebra**

Collect like tems firrst in p^2: 1-3 = -2 in p 4: + 23 = +27 numbers: -23 + 23 = 0 so we have -2 p^2 + 27 p you could write that as -p(2p-27)

*December 22, 2016*

**Social**

Okay thank you so much. This really helped me a lot. Thank you. I appreciate you time and effort

*December 22, 2016*

**Social**

Okay thank you so much. It helped understand the question more. Can you now simplify the question in simpler terms? So it is easy to understand please.

*December 22, 2016*

**Social**

Can you clarify what, to what extent means? i'll try to answer the question then..

*December 22, 2016*

**Social**

The question I have to answer is: To what extent should individuals play a role in serving their nation when the nation is self-interested? I just need a few ideas on how to answer it. I get what the question means but I don't know what to write for it...

*December 22, 2016*

**Social**

To what extent should individuals play a role in serving their nation when the nation is self-interested? I think that they should play a role because they belong to the nation. Their voice matters, and even though the nation is still thinking about only themselves, they ...

*December 22, 2016*

**data management gr.12**

Thank you very much for you help and explanations.

*December 22, 2016*

**data management gr.12**

A particular genetic trait occurs in 2% of the population. The reliability of a test to discover the trait is: if the person has the trait then the test is positive 98% of the time, but the test is also positive 3% of the time for those that do not have the trait. a)Construct ...

*December 22, 2016*

**English**

Can anyone help me? I have to complete this in 20 more minutes.

*December 22, 2016*

**English**

I think it is C

*December 22, 2016*

**English**

The speaker in “Mending Wall” feels the wall is (1 point) unnecessary since they have different types of orchards. important for keeping good relationships in the neighborhood. a tradition that reminds him of his father’s generation and era. a way to stay in ...

*December 22, 2016*

**data management gr.12**

Kirk and Les regularly play each other at darts. The probability that Kirk wins any game is 0.3 and the outcome of each game is independent of the outcome of every other game. a)Find the probability that in a match of 15 games Kirk wins b)find the expected number of game in a ...

*December 22, 2016*

**physics**

A child of mass 40kg jumps off a wall and hits the ground at 4m/s he bends his knees and stops in 1s calculate the force required to slow him down how would this force be different if he didn't bend his knees and stopped in 0.1s

*December 22, 2016*

**data management gr.12**

A hamburger restaurant offers 2 types of buns, 3 types of meat burgers and 4 types of different toppings. How many different hamburgers can be prepared if the chef must choose 1 bun, 1 meat burger but can have no topping, one topping or more than one toppings? Please verify if...

*December 22, 2016*

**data management gr.12**

(7C3 x4C2) # ways of choosing committee 3 males + 5 females. I made a mistake, I think it should be 9C5 instead of 4C2 => (7C3 x 9C5) (7C4 x 9C4) choosing 4 males + 4 females (again I made a mistake) Thanks

*December 22, 2016*

**data management gr.12**

In how many ways can a committee of 8 members be chosen from 7 males and 9 females if the committee must contain at least 3 males? Please verify if my solution is correct: total# of 8 members 16C8 #with NO males 7C8 # with at least 3 males (7C3 x 4C2)+ (7C4 x 4C1)+(7C5 x9C0) ...

*December 22, 2016*

**data management gr.12**

How many different sums of money can you make with three coins of different denominations? Thanks

*December 22, 2016*

**math**

yh x=10

*December 22, 2016*

**Calculus**

If y = 2x - 8, find the minimum value of the product of xy. I think this is -8.

*December 22, 2016*

**Maths**

a new colony was built and the builder gave contract to a sign maker to number the buildings from number 1 to 500.How many zeroes will the need?

*December 21, 2016*

**data management gr.12**

A game is defined by the rules that the die is rolled and the player wins varying amounts depending on the number on the upper face according to the following table: sum 1 2 3 4 5 6 Winnings $10 $9 $8 $7 $6 $5 The cost to play the game is $7.00 a) what can a player expect to ...

*December 21, 2016*

**data management gr.12**

Thank you so much. You have been really helpful. The teacher gave us the normal probability table that ends at 2.9 So it was impossible for me to solve without the proper software or the propability table.

*December 21, 2016*

**data management gr.12**

It is known that approximately 20% of the population is colour blind. In a sample of 270 people, use the normal approximation to find the probability that: a)at least 100 people are color blind b)exact 100 people are color blind Thanks.

*December 21, 2016*

**data management gr.12**

The number of immigrants living in a certain country with a large population makes up 35% of the population. In a random sample poll of 40 people what is: a)the expected number of non-immigrants will be polled? b)the probability that no immigrants will be polled? c)the ...

*December 21, 2016*