# Posts by sana

Total # Posts: 82

**Math**

Brian buys a package of one-inch square tiles. He wants to make a mosaic picture 5 inches long and 4 inches wide. Does he have enough tiles? If so, how many more will be left over?

*March 20, 2017*

**Math**

a coin was tossed and a spinner with three equal sections numbered 1 to 3 was spun. what is the experimental probability that the next toss and spin will result in 3 and Tails?

*January 19, 2017*

**Math**

one-third of lexie's age is 4 years more than one-fifth of this age. lexie's sister is five years younger than her. how old is lexie's sister?

*January 4, 2017*

**Math algebra**

distributive

*December 16, 2016*

**Math**

Find the compound interest on rs 64,000 for 1 year at the rate of 10% per anum compounded quarterly. Could you please do it fast I need to give it tomorrow.

*December 10, 2016*

**physics**

if the distance between two bodies is increased by 25% then % change in the gravitational force is

*March 18, 2016*

**math**

the diameter of scooter wheel is 4cm. how far will the scooter have travelled after 450 revolutions of the wheel?

*January 26, 2016*

**mechanics**

Two skaters, each of mass 70 kg, skate at speeds of 4 m/s in opposite directions along parallel lines 1.5 m apart. As they are about to pass one another they join hands and go into circular paths about their common center of mass. A third skater is skating at 2 m/s along a ...

*December 6, 2015*

**mechanics**

A man begins to climb up a 12-ft ladder . The man has mass 80 kg, while the ladder has mass 10 kg. The wall against which the ladder rests is very smooth, which means that the tangential (vertical) component of force at the contact between ladder and wall is negligible. The ...

*December 6, 2015*

**physics**

750km towards North West?

*May 20, 2015*

**Math**

a simple Model (model 1)of distance,d meters,fallen in time t seconds by free-fall skydiver is d(t)=4.9t^2 a. sketch the model b. a different model (model 2) for the distance travelled by a skydiver is d(t)=4.9t^2-0.1t^2.sketch a graph of this function

*March 17, 2015*

**life orientation**

It can lead to the pressure of looking cool and u can get addicted to smoking ,drugs etc. Also, you can have a feeling of wearing expensive clothes, accessories to impress which is stressful and not necessary

*February 17, 2015*

**physics**

explain why carrots look orange?

*January 4, 2015*

**physics**

explain why carrots look orange

*January 4, 2015*

**physics**

explain why carrots look orange

*January 4, 2015*

**physics**

A car moves at a constant speed of 60 km/hr for 1 km and 40 km/hr for next 1 km. What is the average speed of the car ?

*January 1, 2015*

**physics**

If the athlete lies down on the ground on his back,his weight is spread over an area of 0.75 meter square. How much pressure does he exert on the ground in this position?

*November 21, 2014*

**statistics**

You want to set up a games stall at the Winter Wonderland. You have a single pack of 52 cards and decide to play card games with your customers. The game is designed as follows. A customer draws 4 cards at random. For every “Ace” that the customer draws, he/she wins...

*November 13, 2014*

**statistics**

A researcher finds that two continuous, random variables of interest, X and Y, have a joint probability density function (pdf) given by: f(x,y)={cxy 0<=x<=1,0<=y<=1,x+y=>1, .........0 otherwise where c is a constant. (i) Find the value of c so that f(x,y) ...

*November 13, 2014*

**math**

what is one-half added to 2 sixths?

*October 21, 2014*

**Maths**

Joe has some pocket money. He spends a fifth of it. He has then £2 left. How much pocket Money did he have?

*October 21, 2014*

**math**

Differences between the external angle and n-1 sides regular polygon and n+2 side regular polygon is 6 degree then what is the each external angle

*June 15, 2014*

**physics**

A partly-full paint can has 0.40 gallons of paint left in it. (a) What is the volume of the paint, in cubic meters? (b) If all the remaining paint is used to coat a wall evenly (wall area = 11 m2), how thick is the layer of wet paint? Give your answer in meters

*February 24, 2014*

**Chemistry**

Consider the equation A(aq) + 2B(aq) 3C(aq) + 2D(aq). In one experiment, 45.0 mL of 0.050 M A is mixed with 25.0 mL 0.100 M B. At equilibrium the concentration of C is 0.0410 M. Calculate K.

*February 16, 2014*

**probability**

6/200=3/100

*May 20, 2013*

**maths**

Suppose there are 10 coins laid out in front of you. All of the coins are fair (i.e. have an equal chance of heads or tails) except one, which flips to heads every time. You draw one coin at random and flip it 5 times. If each of the 5 flips results in heads, then the ...

*March 26, 2013*

**maths**

If the point A(1,-2), B(2,3), C(-3,2), and D(-4,-3) are vertices parallelogram ABCD, then taking AB as the base , find the height of this parallelogram

*March 2, 2013*

**statistics**

1.936

*February 26, 2013*

**physics**

1) A car, initially traveling with a uniform velocity, accelerates at a rate of 1.0 m/s2 for a period of 12.0 seconds. If the car traveled 190.0 m during this 12.0 second period, what was the velocity of the car when it started to accelerate?

*February 10, 2013*

**physics**

calculate the friction force of an object? if weight=19600,vi=30ms-1,vf=0ms-1 and S=100m.

*January 7, 2013*

**math**

2x0=0 2x1=2 2x2=2 2x3=6

*October 2, 2012*

**math**

what is the sum of 4xdollers and 4x cents?explain your answer in cents

*July 22, 2012*

**business 100**

here are the right answers B D C A B D C C B C A C D B D D C B A C D B A A B

*June 6, 2012*

**Management**

These are all correct answer I just passed this exams got 100 marks its guaranteed answers all 100 percent coorect .

*May 17, 2012*

**Management**

A D A B A C B C A D C B D A B C D C B C D A A C A

*May 17, 2012*

**Econ**

14.32-3.23 = 11.09 11.09 divided by 3.23 = 3.4 multiply by 100 = 350 %

*March 16, 2012*

**physics**

Could u rewrite the eqn that you used for C2

*March 6, 2012*

**physics**

Consider the Sun to be at the origin of an xy-coordinate system. A telescope spots an asteroid in the xy-plane at a position given by (1.8 1011 m, 3.1 1011 m) with a velocity given by (-8.4 103 m/s, -6.3 103 m/s). What will be the magnitude of the asteroid's velocity and ...

*March 6, 2012*

**mathematics**

40

*February 15, 2012*

**English**

Why is it important that canada produce value added products?

*February 11, 2012*

**Biology**

write a paragraph describing the importance of dna to science, medicine, and all living organisms

*January 29, 2012*

**math**

the game of the euchre uses just 9s,10s,jacks,queens,kings and aces from a standard deck of 52 cards. how many five-card euchre hands have all black cards. is the right answer 495 ways which i got by doing 12C5 x 40C0 = 495 ways

*January 6, 2012*

**math**

given the digits {1,1,2,5,5,5,6,7} how many even numbers less than 5 000 000 are there?

*January 5, 2012*

**math**

given the digits {1,1,2,5,5,5,6,7} how many even numbers less than 5 000 000 are there? (and plzzzzz tell me how u got it )

*January 4, 2012*

**writing**

My son is 3yrs and 6months old he is facing problem in writting small alphabets would u plz help me ,how i teach him :)

*December 9, 2011*

**physics**

two mice are racing to a hunk of cheese.mouse a was between mouse b and the cheese.mouse a started 8.68 meters from mouse b, but "x"meters away from the cheese.both mice traveled at the same velocity,which were 1.43 m/s and started at the same time.it took 6.80 ...

*September 25, 2011*

**physics**

a bowler releases her bowling ball at 425.36 cm/s.it decelerates towards the pins at -4.8 cm/s^2.the length of a bowling alley is 60ft.what velocity did the ball hit the pins and how long did it take to get there?

*September 25, 2011*

**physics**

jeff gordan traveled around a 1.5 mile track 300 times just bcause he felt like it.it took him 6.14 hours to complete the 300 laps.what was his total distance traveled?(1 mile=1.6093km)

*September 25, 2011*

**physics**

superman flies to a meteor traveling at 440km/hr.superman slows it down at a rate of -24.8m/s^2.how long before the man of steel stops the meteor?how far did he travel with the meteor?

*September 25, 2011*

**physics**

abe left his house at 10:14 and goes north 14.0 kilometers to school then and south 70.6 kilometers to the candy store,arriving at 10:57.what are his displacement,total distance,average velocity?

*September 25, 2011*

**physics**

a roller coster goes from 43 yards per hour to a stop in the station.it took 4.5 seconds to stop.what was the acceleration? (1yd=0.9144m)

*September 25, 2011*

**Biology**

Comparing the pairs of elements listed below, choose the pair in which both atoms have nuclei with the same number of neutrons. 2311Na and 2412Mg 73Li and 94 Be 3216S and 5425Mn 147N and 168O

*September 3, 2011*

**Science**

What is the effect of increasing "dead space" ?

*April 24, 2011*

**studies**

hmmmmm!!!!!i hate studys cause the book makes a child's brain damage

*April 6, 2011*

**chem**

) Which of the following should dissolve the smallest amount of silver sulfide per liter, assuming no complex formation? A) 0.1 M HNO3 B) 0.1 M Na2S C) 0.1 M AgNO3 D) 0.10 M NaNO3 E) pure water

*February 22, 2011*

**mechanics**

A string is wound around a uniform disk of radius R and mass M. The disk is released from rest when the string is vertical and its top end is tied to a fixed bar. (a) Draw a free body diagram indicating all the forces acting on the disk. (b) Calculate the acceleration of the ...

*December 9, 2010*

**mechanics**

A wad of sticky clay of massmand velocity vi is fired at a solid cylinder of massM and radius R. The cylinder is initially at rest and is mounted on a fixed horizontal axle that runs through the center of mass. The line of motion of the projectile is perpendicular to the axle ...

*December 9, 2010*

**mechanics**

Two planets, X and Y , travel counterclockwise in circular orbits about a star, as shown in figure below. The radii of their orbits are in the ratio 3 : 1. At some time, they are aligned as in the figure, making a straight line with the star. During the next five years, the ...

*December 9, 2010*

**mechanics**

Q2. A block of massmrests on the left edge of a block of larger massM. The coefficient of kinetic friction between the two blocks is , and the surface on which the larger block rests is frictionless. A constant horizontal force of magnitude F is applied to the block of ...

*December 9, 2010*

**mechanics**

Q3. A skeet (a small disc) of massM is fired at an angle to the horizontal with a speed v0. When it reaches the maximum height it is hit from below by a pellet of mass m (m < M) traveling vertically upward at a speed of v. The pellet is embedded in the skeet. (a) What...

*December 9, 2010*

**English**

Please correct this paragraph. please.. there is no flow in the second paragraph .plz help It is a very interesting and funny story. The writer of the story Francois Rabelais tells us about the adventure of the two giants, Gargantua and Pantagruel in sixteen century. They make...

*November 4, 2010*

**English**

Dear teachers ... please read this paragraph .i know it if full of error but plz help me. I particularly liked Erasmus view that people should not care if other humans hiss at them as long as they applaud themselves. I love the idea that it is a good to praise yourself when no...

*October 28, 2010*

**plz correct this line ..eng**

but his purity is not last long as he start growing

*October 21, 2010*

**English**

Please check this paragraph.please. Wrongdoing and wickedness are as old as first man born in the world. These problems are so great that man cannot cope with it himself. Man can not escape way from wrongful act and the bad conscience without the help of Almighty God. When we ...

*October 21, 2010*

**Englis**

Dear teachers ,Please read this paragraph and fix the errors.please !!! Shahrazad is main character of the one thousand and one nights. She is a good story teller, a Psychiatrist, and a guru. She is a fearless woman, determined to safe her female gender from madness of the ...

*October 17, 2010*

**MATH**

thanx

*February 24, 2010*

**MATH**

what is the GCF 16 and 40

*February 24, 2010*

**english**

can u edit this and add a little more plz like 2-3 lines plz in easy words, it is from the book we are all welcome here by elizabeth berg: Historically the work is significant because it gives us an insight of the horrors of the civil war, which asserted the rights of the ...

*January 11, 2010*

**english**

what is the historical context of the book "we are all welome hear"Which takes place in 1964 ?

*January 11, 2010*

**english**

i need help picking the right theme A)oppression B)discrimination C)obstacles D)injustice plz asap thankyou

*January 3, 2010*

**english**

i need help findng the perfect theme and moral of the novel "we are all welcome here" by Elizabeth Berg As soon as possible Please Thankyou very much!!!!! :) :) :)

*January 3, 2010*

**10th grade**

i need help understanding the book "we are all welcome here" by Elizabeth Berg. plz help will appreciate the help

*January 1, 2010*

**Chemistry**

Suppose you mix 20kg of oxygen is used to burn 20kg of wood. Energy is given off as heat and light. If all the ashes and gases are collected , how would the mass compare with that of the orginal substance? Explain your answer. I have no clue what the answer is please help!!

*February 18, 2009*

**memo**

hey i need to write a memorandum for one of my classes about a company...any ideas on what kinds of topics i could write about?

*October 3, 2008*

**math**

dimond

*September 8, 2008*

**math**

Elesia ets 9 bananas 4 apples and 9 mangoes a week.How many mangoes does she eat in 8 weeks

*February 21, 2008*

**physics**

a telephone engineer feeds a sound signal into the mouthpiece of a telephone.As part of the tests he is making he incresesthe frequency of the sound.HOW WILL THIS EFFECT TYE ELECTICAL SIGNAL PASSING ALONG THE TELEPHONE WIRE?

*October 25, 2007*

**algebra**

100/9

*August 19, 2007*

**Science**

I don't noe ne thng about fluids. HELp..my test is in two days If you repost your question and spell the words right, I'll help you. lol pwnT

*January 30, 2007*

**math, algebra**

2a+2ab+2b I need a lot of help in this one. it says find two consecutive positive integers such that the sum of their square is 85. how would i do this one i have no clue i know what are positive integers.but i don't know how to figure this out. Let n be a postive integer...

*January 26, 2007*

**math (data management)**

How many n-digit decimal sequences (using digits 0-9) are there with k 1s? I'm not entirely sure what you question is asking, but I'll take a guess. You have n digits and k 1's with k<n There are n choose k ways to arrange the 1's in your number. You now ...

*October 15, 2006*

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