Thursday
September 18, 2014

Posts by Jannie


Total # Posts: 39

statistics
a brand name has a 50% recognition rate assume the owner of the brand wants to verify that rate by beginning with a small sample of 5 randomly selected consumers the probability that exactly 4 of the 5 consumers recognize the brand name
July 13, 2014

Maths
Find the angle, in degrees and minutes, that a straight line makes with the positive direction of the x axis if its gradient is 0.853
May 19, 2011

Chemistry
Find the mass of oxygen gas needed to react with 0.2 moles magnesium and the mass of the product? Working out please
April 12, 2011

Maths
The product of two consecutive positive numbers is 42 Find the numbers Please write this problem in quadratic equation form please
April 5, 2011

Chemistry
What mass of magnesium, Mg, contains the same number of atoms as 12g of Carbon, C Could you please show the method too Thanx :)
March 7, 2011

Maths
Suppose you were to leave $100 to be equally divided between your great great grandchildren 100 years from now. Given that you can secure annual interest at 6% pa, what would this amount be? Find the compound interest, compounding monthly? Please show all working out :)
February 7, 2011

Maths
Multiple-choice questions in a test are graded by adding 2 marks for each correct response and subtracting 1 mark for each incorrect response (including no response). Rory and Jenny answered all the multiple-choice questions, with Rory scoring 27 and Jenny scoring 42. Rory ...
November 17, 2010

Maths
A company employs 4 times as many unskilled workers as it does skilled workers. Unskilled workers earn $650 a week, and skilled workers earn $850 a week. The weekly wage bill for these workers is $17 250. How many skilled and unskilled workers are there? Simultaneous equations
November 13, 2010

Maths
Con has twice as much money as Fiona. If Fiona earns an extra $15, Con will only have one-and-a-half times her amount. How much money does each person have? Simultaneous equations
November 13, 2010

Maths
A hall has 1325 seats. These are arranged in rows of 35 seats or 40 seats. The ratio of 35-seat rows to 40-seat rows is 3 : 4. How many rows are there? Simultaneous equation please
November 13, 2010

maths
The linear equation F=ac + b is used to change temperature from degrees Celsius (°C) to degrees Fahrenheit (°F). Given that 0°C = 32°F and 100°C = 212°F, calculate the constants a and b.
November 13, 2010

Maths
A truck is loaded with two different types of crates. When 20 of crate A and 25 of crate B are loaded, the truck’s 8 tonne capacity is reached. When 2 of crate A and 16 of crate B are loaded, the same capacity is reached. Calculate the mass of each crate. Simultaneous ...
November 13, 2010

Maths
When the numerator and denominator of a fraction are each increased by 5, the value of the fraction becomes 3/5 When the numerator and denominator of that same fraction are each decreased by 5, the fraction is then 1/5 Find the original fraction. (Hint: Let the fraction be p/q...
November 13, 2010

Maths
Two sides of a triangle are 10 cm and 15 cm. What is the range of possible lengths for the third side? Write inequality?
October 23, 2010

Maths
A taxi driver averages $15 per trip. He pays $150 per day to the cab company to hire the taxi. How many trips must he make in a day to have at least $120 at the end of his shift? (Ignore the cost of fuel.) Write inequality?
October 23, 2010

Maths
A rectangle has length 2y and width y+ 2. Its perimeter is less than 50 cm. What are possible values for y ? Write inequality?
October 23, 2010

Maths
Our team scored 115 points in the last 5 football games. How many points must we score in the next 5 games so our average points per game is greater than 25? Write inequality?
October 23, 2010

Maths
A certain number is halved, then increased by 3. The result lies between 5 and 7. Between which two values does the number lie? Write an inequeality for this?
October 23, 2010

Maths
The length and width of a rectangle are in ratio 11:7. If its perimeter equals 144m, find the length and width?
October 22, 2010

maths
In a test there were 25 multiple-choice questions. They were marked as follows: 2 marks for each correct answer 0 marks for a non-attempt -1 mark for an incorrect answer. Sarah attempted 4 5 of the questions and received 22 marks. How many questions did she answer correctly?
October 15, 2010

maths
Two hikers begin walking towards each other from an initial distance of 20 km apart. Hiker P averages 4 km/h while hiker Q averages 6 km/h. When and where do they meet?
October 13, 2010

maths
In a test there were 25 multiple-choice questions. They were marked as follows: 2 marks for each correct answer 0 marks for a non-attempt 1 mark for an incorrect answer. Sarah attempted 4 5 of the questions and received 22 marks. How many questions did she answer correctly?
October 12, 2010

Maths
If the numerator and denominator of the fraction 4 9 are both increased by a certain value, m, the fraction then becomes equal to 3 4. Calculate this value.
October 12, 2010

Matths
I have 50 coins, some 10c and the rest 20c. Altogether they total $8.20. How many of each coin do I have?
October 12, 2010

Shapes
Find the pronumeral. In a parallelogram the 4 angles are (3m+16), (4n-16), 68 and 68. Find the pronumeralsm and n and write the equation for the problem
October 12, 2010

Angles
What are alternate angles?
October 12, 2010

Maths
What is the perimeter formula for an equilateral triangle?
October 12, 2010

English
What does it mean by Australia's success is riding on the sheep's back?
October 11, 2010

english
What is the difference between definate and indefinate articles
October 8, 2010

Maths
The sum of three consecutive numbers is 51. Find the largest number. Also write the equation to solve the problem
October 7, 2010

Maths
How must $59 be shared between Michael and Matthew so that Michael’s share is $4 less than twice Matthew’s share?
October 6, 2010

Maths
In a triangle the angles are (x + 9)°, 3x ° and (2x + 3)°. Find the smallest angle.
October 5, 2010

algebra
you make a table of values and then you graph the line. The line could be either straight or curved.
October 5, 2010

Science, Technology and Culture
I have to create a case study on The Impact of technology on telecommunications. I do not know where to start or what a case study looks like. I have to have two sources that are interviews. I work for a AT&T Call Center but I don't know how to make a case study about it.
November 11, 2009

Physics
A projectile is launched from ground level to the top of a cliff which is 195m away and 135m high (as shown in the figure ).If the projectile lands on top of the cliff 6.9s after it is fired, find the initial velocity of the projectile a)magnitude b)direction Neglect air ...
September 12, 2009

Reading
my son in 4th grade has to write a poem using stanza form and must use his mentor text. What is mentor text?
October 20, 2008

bio
why would the population of lions or pumas increase over time? would would affect this increase. For example if in 1975 there were 5 pumas in one area why wouls there be 28 in the year 2008
September 12, 2007

physic
1. A surface charge can be produced on insulators by a. grounding b. induction c. polarization d. contact 2. Unlike insulators, conductors can be charged by a. grouding b. induction c. polarization d. contact The easy way to charge an insulator is by contact. Insulators cannot...
March 29, 2007

english
She's a very capable person
August 23, 2006

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