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Posts by zee

Total # Posts: 68

Maths
Find the number of ways of forming an executive committee of 4 in a social club consisting of 15 members, if a particular man must be in the team

math
(a) Differentiate (x^2 + 1)^4 (b) Hence find a primitive of 8x(x^2 + 1)^3 .

Maths
dx/dt = (x+2) sin^2 2t, given x=0, t=0. Solve the differential equation and calculate value x when t= pie/4, giving your answer in 3 significant figures.

Math
Th equation x^3 - x^2 - 6 = 0 has one real root, denoted by a. Find by calculation the pair of consecutive integers between a lies.

Maths
Solve the equation: sin^-1 (4x^4+x^2) = 1/6 pi

Chemistry
This is about rate of reaction btw.

Chemistry
What are the other two independent other than concentration for reaction of hydrochloric acid with calcium carbonates. And what are thier control variable?

Science ~ Astronomy
Which evidence provides support for the nebular theory: a) scientists have observed the formation of a distant solar system b) the nebular theory has been proven mathmatically c) astronomers have observed protoplanetary disks around distant newborn stars d) none of the above I...

life orientation
Help joh

math
Ball

Math PLZZ
That was totally wrong

Mzamba C.H.S
What can I be If I do pure mathematics, english Home Language, Life sciences,Agricultural technology,Life Orientation and Isixhosa FAL

Physics
A pole-vaulter just clears the bar at 4.42 m and falls back to the ground. The change in the vaulter's potential energy during the fall is -3800 J. What is his weight?

ICT (Programming)
Design program logic that receives the letter grades for 4 subjects and then based on the grades, calculate the total grade point. The program should use IF statements to determine the grade point corresponding to the letter grade (as given in the table below). Once all the ...

ICT (Programming)
Based on the table below, Based on the table below, using a CASE structure to display the type of designation when a specific code is entered. CODE TYPE OF DESIGNATION L LECTURER S SENIOR LECTURER D DEAN A ADMINISTRATION (other code) WRONG CODE ENTERED! 4. Student is required ...

chemistry
You weigh out an antacid tablet and determine the mass to be 1.1990 g. After taking a 0.2455 g sample of the antacid tablet, you dissolve it in 25.00 mL of a 0.1006 M solution of hydrochloric acid in a 250.0 mL Erlenmeyer flask. After heating the solution to get rid of carbon ...

Calculus
An observer is 36m above the ground floor of a large hotel atrium looking at a glass-enclosed elevator shaft that is 26m horizontally from the observer. The angle of elevation of the elevator is the angle of the observer's line of sight makes with the horizontal (it may be...

Calculus
An observer is 23m above the ground floor of a large hotel atrium looking at a glass-enclosed elevator shaft that is 15m horizontally from the observer. The angle of elevation of the elevator is the angle of the observer's line of sight makes with the horizontal (it may be...

science
A reflecting spherical Christmas tree ornament has a diameter of 12 cm. A child looks at the ornament from a distance of 18cm. A ... image will form at ... from the ornament

calculus
t=0 initially

calculus
A woman is attached to a bungee cord from a bridge that is 38m above a river. Her height in meters above the river t seconds after the jump is y(t)=19(1 + e^-1xcos(t)) for t>0. What is her velocity at t=1 and t=4?

Math
A(1,4), B(-3,8) and C(5,6) as vertices of triangle ABC a-find the slope of the line through A parallel to BC b-Find the slope of the altitude from c to ab

Maths literacy, accounting, economics and business studies
You can be a bookkeeper

chemistry
Find the mass of AlCl3 that is produced when 10.0 grams of Al2O3 react with 25.0 g of HCl according to the following equation. Al2O3(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2O(aq) 65.4 g help me ASAP.PLIS..

calculus
(-0.63, 0.63) - final answer

Educational tech-1 question
The answer is A, both are covered by intellectual property protection.

Geometry
127.3 90*90+90*90=16,200*16,200 Then you need to find the square root of 16,200, which would be 127.3

sjc coolege
A steel bar 10m long and 10cm ×2.5cm in section .It is subjected to an axial pull of 250KN. Determine the intensities of normal and tangential stresses on a plane.

English
How has francis ford coppola used film techinques to convey the italian mafia that existed in the 1900's? hi there i already started the essay, however, i am quite confused as to how to write it into exact essay format. i have already written all my ideas down and im in ...

Physical Science ASAP
true because oil can decrease the friction of any object

physics
A skater with 60 kg mass pushes a skater of 80 kg with a 68 N force. What will be the magnitude and direction of force and acceleration of each skater?

physics
A skater with 60 kg mass pushes a skater of 80 kg with a 68 N force. What will be the magnitude and direction of force and acceleration of each skater?

Precal
Verify the identity: sin^(1/2)x*cosx - sin^(5/2)*cosx = cos^3x sq root sin x I honestly have no clue how to approach the sin^(5/2)*cosx part of the equation

maths
Given that 1 - x2/6 smaller of same as x sin x / 2(1-cos x) smaller or same as 1. Use the Sandwich Theorem to obtain the limit of x sin x / 1 - cos x when x is 0

maths
Given that 1 - x2/6 smaller of same as x sin x / 2(1-cos x) smaller or same as 1. Use the Sandwich Theorem to obtain the limit of x sin x / 1 - cos x when x is 0

maths
Use the Sandwich Theorem to obtain the limit of 2 Sin x / x when x is 0

Chemistry
The distance between Miami and Key Largo is 70 miles. If a mile is 5280 ft and an inch is 2.54 cm, Calculate this distance in Kilometers

the inspection
need help don't know

science
Hi, I was wondering if I answered this question correctly #1-Two kinds of cell-transport are used in the process that forms ATP. Name the two types of transport and describe how they take place. Electron transport is not a form of cell transport. #1- I think the passive and ...

biology
Hi, I was wondering if I answered this question correctly #1-Two kinds of cell-transport are used in the process that forms ATP. Name the two types of transport and describe how they take place. Electron transport is not a form of cell transport. #1- I think the passive and ...

biology
Hi, I was wondering if I answered this question correctly #1-Two kinds of cell-transport are used in the process that forms ATP. Name the two types of transport and describe how they take place. Electron transport is not a form of cell transport. #1- I think the passive and ...

English
Hi, I am writing an essay about "Disneyfication" of folktales, and I searched for quotes and resources but I didn't find any useful information. I really need help in finding quotes and resources about "Disneyfication" of folktales.

english
Thank you so much and thanx for the tip I'll try it on my next essay

english
Hi, I posted my essay earlier for punctuation, corrections, and I really need help correcting the following from the essay: -I read the Quran everyday of my life to learn and get inspired from. -The book had this amazing story about a Woman that was cured from breast cancer by...

english
Hi, I Proofread for wording errors and grammar, but I need help to see if my grammar is proper now. I personally respect every religion, and I love reading holy books. Holy books inspire many people. Holy books taught me many morals and stories on our everyday life, which ...

Life Or
3.1,1What according to the basic condition of employment Act applies with regard to the contravention that you ve identified?

grammar help
heres the question tell me what you would look for to tell whether a cell was prokaryotic or eukaryotic. Be specific.

grammar help
#2The first thing I would look for to tell whether a cell is a prokaryotic or a eukaryotic is the cell size. Eukaryotes are larger and more complexing than prokaryotic cells. The second thing I would look for is the nucleus if the cell has a nucleus it is a eukaryote. And ...

grammar help
So the story began when a small aerobic prokaryote came in a large prokaryote. The large prokaryote ingested it and it turned to a mitochondrion. A small photosynthetic prokaryote came the large prokaryote ingested it and it turned to a chloroplast. The life used to consist of...

grammar help
#1- So the story began when a small aerobic prokaryote came in a large prokaryote. The large prokaryote ingests it and it turns to a mitochondrion. A small photosynthetic prokaryote comes the large prokaryote ingests it and it turned to a chloroplast. The life use to consist ...

grammar help
#1- So the story begin when a small aerobic prokaryote came in a large prokaryote. The large prokaryote ingests it and it turns to a mitochondrion. A small photosynthetic prokaryote comes the large prokaryote ingests it and it turned to a chloroplast. The life use to consist ...

grammar help
Hi, Please help me fix grammatical and any other mistakes in my writing. #1- So the story begin when a small aerobic prokaryote came in a large prokaryote the large prokaryote ingests it and it turns to a mitochondrion , then a small photosynthetic prokaryote comes the large ...

physics
1.1m/s

chemistry
At STP, when 3.75 liters of oxygen reacts with excess glucose, what volume of carbon dioxide does it produce?

Physics
Please Help. A 5 kg object is propelled from rest at time t=0 by a net force F that always acts in the same direction. The magnitude of F in newtons is given as a function of t in seconds by F= 0.5t. What is the speed of the object at t =4s?

statistics
Gallup News Service conducted a survey of 1,006 American adults aged 18 years or older, September 24-27, 2007. The respondents were asked, “What, if anything, worries you most about your personal financial situation in he long term? ‘Of the 1,006 adults surveyed , 18...

Com 155
How can you tell if a paragraph is a summary, synthesis, analysis, or evaluation

math
if a radio tower send a signal with a 12-mile radius. will a house that is 10 miles east and 5 miles north of the tower receive the signal i tried the problem, i drew a picture but im not sure of its right because i don't have a compass to make a good circle

trig
If there is anything about log, it is logarithmic So take the log of both sides, log 300 = log 8y Writing 300 as 3*100, log(3*100)=log 8y Using log(AB) = log A+log B, log 3+log100=log 8+log y Because log 100=2, log 3+2=log 8+log y Rearrange: log 8-log 3=log y-2 By log(A/B)=log...

math
Barstucks is making a new coffee blend. The company bought 50lbs. of Kona beans at $34.95 per lb. and plans to mix these beans with Columbian beans that sell for $7.99 per lb. wholesale. If Barstucks wants its cost of the blend to be $11.95 per lb., how many lbs. of Columbian ...

Math/science
describe the symmetries of a water molecule.

Math
let x and y be real numbers. find the area enclosed by the graph of the following equation: abs(2x)+abs(2y)=1

Math
Signs in a department store read, "75% off original prices when you take an extra extra 50% off already reduced prices." By what percent were original prices reduced before today's sale?

History
Fear of christianity, need for political unity and stability. They were afraid that local Chritains would help turn he country over to a foreign power, as had happened in the Philippines.

History
Identify three reasons why Japan closed its doors to the outside world.

World History
Ok read it but there is no comparison of the 2 cultures.

math
suppose x S f(t) dt= x^2 - 2x + 1. Find f(x). 1 S = integral and 1 = lower level, x = upper i don't understand what i'm supposed to find/what to do and i didn't make any typos.

math
factor x2+16x-36 factors are 18, 2

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