# Posts by muhammad

Total # Posts: 84

**Maths**

Shopkeeper sells his goods at 20% above the cost price. What will be the percentage profit he will earn if he discounts the price by 10% and then offer a seasonal discount of 5%?

**Maths**

There are fifty students in a class. In a 100 marks exam, 20 students scored less than 30 marks, 5 students scored more than 70 marks and the remaining scored between 30 and 70 marks. If passing score is 55 marks and 40% students have passed the test, what is the percentage of...

**government**

Highlight four limitations on the rights of a citizen

**Psychology**

I was right.

**Psychology**

Am I right? Sorry that is my question.

**Psychology**

Which of the following scenarios is the best example of negative reinforcement? a. Vanna fastens her seatbelt as soon as she gets in her car to stop the annoying alert sound. b. Drake no longer cuts class now that his parents confiscated his iPod. c. Maria now buys a different...

**Psychology**

I was right.

**Psychology**

I think it should be A.

**Psychology**

Which of the following scenarios is the best example of positive reinforcement? A. Maria now buys a different brand of cigarettes to get two packs for the price of one. B. Nate no longer arrives late at work following a reprimand from his boss. C. Drake no longer cuts class ...

**Psychology**

Thank you.

**Psychology**

I think it should be B. But I am not 100% sure.

**Psychology**

15. How might adolescents’ tendency to engage in such risky behaviors as unsafe sex and experimental drug use reflect brain development during childhood and adolescence? a) The limbic system does not develop fully until early adulthood; adolescents therefore have a poor ...

**Psychology**

Thank you.

**Psychology**

charles has been told by the doctor he has lung cancer that is beyond treatment. His doctor tells him that he will probably die within a year. Charles suddenly starts to laugh and tells the doctor that the lab must have mixed up the test results. Chalres is most likely in the ...

**Psychology**

Thank you.

**Psychology**

After reading the article I think it is B. Am I right?

**Psychology**

7. Research examining the perceptual abilities of newborn and very young infants has: a) provided little information regarding the notion that infants experience a "blooming, buzzing confusion" b) tended to contradict the idea that infants experience a "blooming...

**Maths**

The diameter of a bicycle wheel is 14 cm.What is the distance covered by it in 50 revolution

**Algebra 1**

Alisha is paying $20 for a large pizza,which is 18 inches in diameter, a better buy than paying $5 for a personal size pizza that is 6 inches across?Explain

**Calculus**

The number of people expected to have a disease in t years is given by y(t) = A.3^(t/a) (i) If now (year 2016) the number of people having the disease is 1000, find the value of A. (ii) How many people are expected to have the disease in five years? (iii) When are 100,000 ...

**Science**

photosynthesis is a chemical reaction through which plant converted solar energy in to chemical energy, this chemical energy is stored in the form of carbohydrate (glucose) which is necssory for plant activities such as growth, maintains, survival etc the Rxn is 6CO2+6H2O...

**Chemistry**

Dear, DrBob, you mentioned 4 criteria for a chemical reaction it s absolutely wrong. these are few parameters to check a reaction has done or not, but not a reasons for reaction. NaF and NaCl do not react

**Calculus**

The base of a solid is the circle x2 + y2 = 9. Cross sections of the solid perpendicular to the x-axis are equilateral triangles. What is the volume, in cubic units, of the solid? 36 sqrt 3 36 18 sqrt 3 18 The answer isn't 18 sqrt 3 for sure.

**Calculus**

Thank you steve.

**Calculus**

Find the volume of the solid formed by rotating the region bounded by the graph of y equals 1 plus the square root of x, the y-axis, and the line y = 3 about the line y = 5.

**Calculus**

Find dz/dy for the following : z=(e^xy)+2ycos(xy-1)

**Calculus**

Determine the relative extremum for the function , f(x,y)=((x^2)+(y^2))(e^-x)

**Calculus**

Find dz/dy for the following : xln(1-2y) = zsin((x^2)z)-3y+z

**Calculus**

The base of a triangle is decreasing at the rate of 2 cm/ min and the height is increasing at the rate of 1cm/ min. Find the rate at which the area is changing when the base is 8 cm and the height is 6 cm. Is the area increasing or decreasing at that moment?

**Calculus**

The number of people expected to have a disease in t years is given by y(t) = A.3^(t/a) (i) If now (year 2016) the number of people having the disease is 1000, find the value of A. (ii) How many people are expected to have the disease in five years? (iii) When are 100,000 ...

**Calculus**

Two ants, red ant and black ant, creeping along lines in 3-space. At time t, red ant is at point on the line x=3-t , y-2=2t , z-2t=6 and at the same time t, black ant is at the point on the line 2x=t , y-3t=2 , z=2+t a) Find the starting distance between red and black ants ...

**PHYSICS**

A perfect gas at 415 degree centigrade. The volume remains constant at 20 cubic meters and pressure of 1750 Gauge. Calculate the final value of V2 AND T2

**university chemistry**

the oxygen produce was colleced by displement method at (22c)at a total pressure of (754torr)the vapor pressure of water at (22c) in (21torr) calculate the pershel pressure of oxygen in the collected

**math**

you are baking cookies. recipe 2 cup sugar 1-1/2 cup flour 2 eggs a- you make one and one-half batches of cookies, how many eggs have you used? Answer- 2 eggs b- Each batch makes 24 cookies. you make x batches of cookies but eat 5 cookies as you are baking. Write an expression...

**english**

what is the meaning of the phrases frightened the life out,got down on hands and knees and stuck his nose in the air

**math**

n idea

**critical thinking**

Answer is option A ONLY...... AS AUXILIARY IS followed by a subject. A common sense!

**Chemistry**

an ideal system absorbed some amount of heat and gas expand and the piston move to 0.4 meter against than the atmospheric pressure. If the cross sectional area of the container is 0.6 meter2. What is the amount of heat absorbed?

**History**

please put up the right answers I need to check

**physics**

Assume that there is no friction between m2 and the incline, that m2 = 1.8 kg, m1 = 1.4 kg, the radius of the pulley is 0.10 m, the moment of inertia of the pulley is 3.6 kg m2, and θ = 27.0°. Mass 1 is hanging vertically while mass 2 is on the incline. After mass 2 ...

**Help plz👍😂**

Hero in long way from Chicago book why

**math**

thanks

**math**

Why 0!=1 Plz help me to prove this statement.

**math**

16:64=48:x 16/64=48/x 1/4=48/x by cross multiplication x=192 so you can buy 192inches of wire.

**Pre Algebra**

Find the product and write in lowest terms. 10/51.3/8

**chemistry**

Sodium thiosulfate, Na2S2O3, is used as a fixer in photographic film developing. The amount of Na2S2O3 in a solution can be determined by a titration with iodine, I2, according to the equation: 2Na2S2O3(aq) + I2(aq) --> Na2S4O6 +2NaI(aq). Calculate the concentration of the ...

**math**

in a class there are 35 students.25 of the students can play basketball ,and 15 of the students can play football .5 of the students cannot play either of these.how many students can play both?

**chemistry**

how many sig figs in this number: 32.6721

**math**

80

**Chemistry**

a) [X]=[Y]=[Z]=1.0 m ans= net reaction goes to the right b) Px=Pz=1.0 atm, Py=0.50 atm ans=net reaction goes to the left

**English**

Write a narrative composition title it does not pay to be lazy

**9th grade algebra**

×+11=13

**Annur mathematics**

Approximate the followin. 1.2.7272to 2d.p

**science chemistry**

1000g of a 55%(mass percentage) nitric acid solution is to be diluted to 20%(mass percentage) nitric acid solution.how many liters of water should be added to the starting solution?

**science chemistry**

1000g of a 55%(mass percentage) nitric acid solution is to be diluted to 20%(mass percentage) nitric acid solution.how many liters of water should be added to the starting solution?

**Chemistry**

How many moles of Fe3O4 are required to supply enough iron to prepare 0.442 mol Fe2O3?

**physics**

a car of mass 'm'starts from rest and is driven with constant power.after some time it covers a distance 'x'.what should be the speed of car?how we can find the speed of car?

**math**

divide both sides of equation by 9 x-5=4x-5 or 4x-5=x-5 add 5 and -x on both sides 4x-5-x+5=x-5-x+5 3x=0 divide both sides by 3 3x/3=0/3 x=0

**physics**

A rocket carrying a satellite is accelerating straight up from the earth's surface. At 1.20 after liftoff, the rocket clears the top of its launch platform, 68 above the ground. After an additional 4.85 , it is 1.50 above the ground.Calculate the magnitude of the average ...

**CHEMISTRY**

Ans= Pressure PCl3= 6.78 Torr Pressure PCl2= 26.4 Torr pressure PCl5= 224 Torr

**physics**

A ship leaves the island of Guam and sails a distance 280 at an angle 38.0 north of west.In which direction must it now head so that its resultant displacement will be 115 directly east of Guam? (Express your answer as an angle measured south of east) How far must it sail so ...

**physics**

The scalar product of vectors and is +53.0 . Vector has magnitude 6.00 and direction 28.0 west of south. If vector has direction 39.0 south of east, what is the magnitude of ?

**physics**

i forgot to put thanks a lot for your time

**physics**

Two vectors and have magnitude = 3.08 and = 3.08. Their vector product is = -5.07 + 2.00 . What is the angle between and

**PHYSICS**

In what direction should Ricardo walk to go directly toward Jane?

**PHYSICS**

What is the distance between them?

**PHYSICS**

Ricardo and Jane are standing under a tree in the middle of a pasture. An argument ensues, and they walk away in different directions. Ricardo walks 28.0 in a direction 60.0 west of north. Jane walks 11.0 in a direction 30.0 south of west. They then stop and turn to face each ...

**physics**

thanks you so much

**kuwait**

You are camping with two friends, Joe and Karl. Since all three of you like your privacy, you don't pitch your tents close together. Joe's tent is 19.5 from yours, in the direction 21.5 north of east. Karl's tent is 41.0 from yours, in the direction 41.0 south of ...

**physics**

Assuming you mean 18.1 cm. x = at^2/2 ==> t = sqrt(2x/a) a = g = 9.81 m/s^2 2x = 0.362 t = 0.1921 s. it is right but you enter 18.2 ok

**Ecology**

I see what is if i try to assume data results, based on prior knowledge is that possible if so how would i do that can you please point me in the right direction. Thank you very much appreciate it.

**Ecology**

I Have an assignment that requires me to design, write and carry out an analysis and a report of survey from beginning to end however, the confusing part it that it has to be done without any actual data i don't know how to start that. Please help topic is Cancer related ...

**physics**

A rock is thrown off a cliff in the horizontal direction at a speed of 2.4 m/s. What is the magnitude of its vertical speed 0.38 s later?

**Physics**

I am also in the VASTS program.My data is different, but they have the same concept.

**Chemistry**

the total number of electrons in sulphate ion are 32

**physics**

YO are you vlad from my geometry class, mr. schwaigoffer

**social studies**

I have a few questions regarding the issue of jemaah prayer for women. We know that the prayers made in the masjidil haram is 100,000 times than other places. Yet, for a woman prayer in her house is better. 1. Does this mean that a woman’s prayer at home will be better ...

**religion**

I have a few questions regarding the issue of jemaah prayer for women. We know that the prayers made in the masjidil haram is 100,000 times than other places. Yet, for a woman prayer in her house is better. 1. Does this mean that a woman’s prayer at home will be better ...

**Biochemistry/Biotechnology**

sol.. ist you converted 250 ml in to liter, so it will be 0.25 l then (0.25l)(0.8 M)(169.87 g/mol) it will be 33.94 gram s0 33.94 g Ag-nitrate require to make 250 ml of 0.8 M sol of silver nitrate Or u can say that 250 ml of 0.8 M sol of silver nitrate contain 33.94 g Ag-...

**hardware**

hi i have a project to make a step by step tutorial on how to build a computer can i get help?

**accounting**

Identify several ways in which you currently use accounting information in your life as a student. Also identify several situations in which, while you are still a student, you might be required to supply financial information about yourself to others?

**physics**

Find the distance (measured in earth radii, RE) from the center of the earth to a point outside the earth where the acceleration of gravity due to the earth is exactly one ninth of its value on the surface of the earth.

**chemistry 1st year, for midterm help**

PIEASE TELL ME HOW MANY MAKES THE QUESTION

**Mathematics**

LANATI

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