Questions Asked on
December 27, 2015

Chemistry
the pH of a solution is 10 and other is 12 when equal volumes of these low are mixed the pH of the resulting solution is?
asked by Pandu 
cambrain hall
What is perodic table, who gave modern perodic table with any5 important points about the perodic table ?
asked by anchal 
math
the second derivative of f(x)=ln(x^2+1)
asked by selina 
math
find the equation of tangent line to the graph of f(x)=xcosx(√2 x) at a=0
asked by selina 
chemistry
If the titration of a 30.0 mL sample of sulfuric acid requires 27.65 mL of 0.090 M sodium hydroxide, what is the molarity of the acid? H2SO4(aq)+2NaOH(aq)→Na2SO4(aq)+2H2O(l)
asked by lisa 
Math
Find the derivative of y=(sinx/(1+cosx))^2. I used the chain rule, but the second part involved the quotient rule which gives a very complicated expression that u do not know how to simplify. Could you please give me a detailed step by step solution for
asked by Beth 
science
A uniform solid sphere is placed on a smooth horizontal surface and a horizontal force F is applied on it at a distance h above the surface. The acceleration of the center?
asked by harry 
math
find the equation of tangent line to the graph of f(x)=xcos(√2 x) at a=0
asked by selina 
math
A museum groundskeeper is creating a semicircular statuary garden with a diameter of 30 feet. There will be a fence around the garden. The fencing costs $9.25 per linear foot. About how much will the fencing cost altogether? THANK YOU!
asked by Tim 
Math
Derivative of y=sec(tanx)? I don't get how it is secxsecx*secxtanx*tanxtanx. Where does an extra tanx come from? Derivative of sec(tanx) is just secxtanx*tanx (and then multiply the inside as well so)* sec^2(X) as derivative of tanx. I have 2 tanx, where
asked by Beth 
mustapha
0.0025*10^1/3
asked by sherif 
math
if h(x)=sinπ/x then find hderivative(4)
asked by ruth 
Physics
A particle of mass m1 experiences a perfectly elastic collision with a particle of mass m2 at rest. What fraction of the incident energy does the incident particle lose if a) it recoils at right angle to the original direction and b) the collision is
asked by Cosmin 
Physics help
Find the differential equation of motion for a gravitational pendulum of mass m and length a by using the fact that the torque of its weight relative to the point of suspension is equal to the time derivative its angular momentum. Solve this equation to
asked by Daniel 
math
what is the 3rd derivative of f(x)=x^2 e^x^2
asked by ruth 
Physics college
A particle is thrown from the origin of the frame xOy at the moment t = 0, with speed v0 at a certain angle b from the Ox axis. At the same moment another particle begins to fall freely from a wall with height h, situated at the distance d. Air resistance
asked by Daniel 
komenco
the first, second, and fifth term of an AP are three consecutive terms of an exponential sequence. if the first term of the linear sequence is 7 ,find it common difference
asked by solomon 
Mechanics
A constant force of 40newton is applied tangentally to the rim of the wheel with 20cetimetre radius the wheel hs moment of intial 30kg find (a)angular acceleration (b)angular speed after 4second frm rest (c)d number of revolution made in(d)show that d work
asked by Gift 
Algebra
a factory can produce two products, x and y with a profit approximated by P=14x+22y900. the production of y can exceed x by no more than 100 units moreover production levels are limited by the formula x+2y,+1,400. what production levels yield maximum
asked by HELP!!! 
Health
Which one of the following choices is the best option for a vegan snack? A. Tomato juice and macaroni and cheese B. Almond milk with butter cookies C. Vanilla soymilk, peanut butter, and pretzels D. Chocolate soymilk with angel food cake I would say B ,
asked by Jocelynn 
Health (Double checking)
Which one of the following choices is the best way to build muscle bulk? A. Eat a healthy, balanced diet and follow a regular fitness program. B. Use amino acid powders from a health food store. C. Eat more highprotein foods. D. Avoid vegetarian diets. A?
asked by Jocelynn 
science
an organisms particular role in its habitat or when and how it survives is called what?
asked by kahla 
math
How many 2/9 inch pieces can be cut from a piece of yarn that is 6 inches long
asked by bella 
Math
How many triangles exist when the measure of angle B is 100 degrees, a =10 and b=5? a. none b. 1 triangle c. 2 triangles I have already solved this and I have found that there will be no triangle because by using the law of sines I found that the value is
asked by David 
math
Sam in placing rope lights around the edge of a circular patio with a diameter of 18 feet. The lights come in lengths of 54 inches. How many strands of lights does he need to surround the patio edge?
asked by Tim 
English
1. to avoid doing or having something 2. avoid doing or having something =================== It is the definition of 'skip.' Why is 'to' put before 'avoid'? Can't we use #2 as the definition of 'skip'?
asked by rfvv 
English
as reported by somebody or something ====================== This is the definition of 'according to.' What is omitted between 'as' and 'reported'? What is the part of speech of 'as'?
asked by rfvv 
English
Hello. I would be very grateful for some help. 1) Do you think the preposition "in" is OK in the following sentence or is it "after": "He knew he would return in a year"? 2) If a person left a building or a room, is it possible to say: "he came out of the
asked by Nalmi 
gale math
How to write 233.75 and 85.50 as a decimal number
asked by Jonathan 
accounting and finance
find the rate of interest compound semiannually at which birr 2000 will grow to birr 5000 in 9 years?
asked by Mohamed 
math
1.On the package of candy coated chocolates it states the box contains 147 grams. In reality, the mass can vary between 145 g and 150 g. You may find between 63 and 69 pieces of candy in any given box. Explain which variable represents the domain and
asked by jordan 
math
Use words to describe a reasonable domain and range for the number of people painting a house and the time required to finish the job. Explain your answer.
asked by jordan 
mats
AD is the mid point of triangle ABC and G divides AD in the ratio 2:1 .Prove that triangle AGB =area BGC = area AGC =1Ã·3 area ABC
asked by Anonymous 
Maths
area (triangle BCE )=75.2 meter square. Find area ( ABCD) where ABCD is a parallelogram
asked by Anonymous 
Maths
In a triangle ABC, D is the midpoint of BC and E is the midpoint of AD. if area of triangle ABC is 144 meter square then find the area of triangle DCE
asked by Anonymous 
maths
L parallel to M ,ABCD parallelogram. IF area of (triangle BDC)=121.5 centimeter square ,write the value of h
asked by Anonymous 
mats
in a triangle ABC, D is the midpoint of BC and E is the midpoint of AD. IF area of triangle ABC is 144 centimetre square then find the area of triangle DCE
asked by Anonymous 
Algebra
Over 350 students took a college calculus final exam. the scores of the students follow a normal distribution. using the information given below, determine the mean and the standard deviation for the students'scores. Give your answers to the nearest tenth
asked by Stephanie 
Maths
PQRS is parallelogram and K is the midpoint of the side PQ Prove that area of (triangle PKS )= 1÷2 area of (triangle SKR )
asked by Anonymous 
maths
ABCD is a parallelogram and E is the midpoint of the side CD . Prove that area (ABED )=3×area of (triangle BEC )
asked by Anonymous 
stats
On the seventh day of Statistics, my teacher gave to me  seven swans aswimming. But can they swim faster than American Olympic gold medallist Michael Phelps? Michael can swim the 200 meter butterfly in 1 minute 54 seconds (which is 114 seconds). In the
asked by HELP 
University of Liberia
find the linear speed of each point 2cm and 15cm from the axis of a phonograph record rotating at 33 and 1/3 rev/min
asked by Musa 
algebra
Suppose that a plumbing repair bill, not including tax, was $120. This included $25 for parts and an amount for 2 hours of labor. Find the hourly rate that was charged for labor.
asked by Anonymous 
Health
Using carboloading to increase the store of glycogen seems to benefit only those athletes who engage in aerobic activities that are A. more than 90 minutes. B. between 30 and 60 minutes. C. less than 20 minutes. D. between 50 and 80 minutes. A? I'm double
asked by Jocelynn 
Calculus
Find the integral of 2/((2x)(x+2)^2)dx.
asked by Henry 
Math
Marko runs 3/5 mile 3 times a week. How far does Marko run each week?
asked by Tracie 
physics
find the linear speed of each point 2cm and 15cm from the axis of phonograph record rotating at 33 an 1/3 rev/min
asked by Musa 
physics
A 5kg motorbike moving at 10m/s to the left collides with 6kg motorbike moving at 12m/s to the right. the two bikes stick together after they collide. find the final speed of the composite objects and the kinetic energy dissipated in the collision.
asked by Musa 
Health
MY first answers were wrong, if you could check my second answers that would be lovely!! 13. Positive energy balance is important when A. a child is growing. B. weight loss is desired. C. weight stability is desired. D. you're stressed. I thought it was C
asked by Jocelynn