Saturday
October 25, 2014

Posts by Lucas


Total # Posts: 142

Math
x/9 -4= 5/18
October 24, 2014

Physics
There are 2 objects connected with ideal, massless string that is hanging over an ideal (massless and frictionless) pulley. The angled surface is at a 25.0 degree angle. All surfaces are firctionless. A force F1 is applied horizontally as shown to the right on object 2. ...
October 9, 2014

science
Which type of data is qualitative data? a.heights and meaters b. volume and milliliters c. calculations and density d. descriptions or behaviors
September 23, 2014

math
5184
September 7, 2014

math
If 1mechanic can do 4 machines in 6 hours how many machines can 48 mechanics do in 160 hours?
September 7, 2014

math urgent please
Thank you for your advice, I appreciate it really a lot, but unfortunately I always checked me writing and exercise is exactly copied from the book Oxvord IB diploma programme Mathematical studies standard level chapter 4 page 183. Why I was very confused because I'm ...
September 3, 2014

math urgent please
A fish tank in the shape of a cuboid has length 320 cm. Its length is twice that of its width. To enhance viewing, the area of the four vertical faces should be maximized. Find the optimum "viewing area" of a fish tank that is fixed to the wall so that the area of ...
September 3, 2014

math
Dear Steve, thank you so much for your really so huge help. I only wanted to ask you and I'm sure I'm wrong about it but Both students start with $200 and both how much money will have after they have passed START 10 times. I did: I used formula : un =u1+(n-1)d ...
August 27, 2014

math
Two students, Mary and John, play a game. Each time Mary passes “start” she received $25. Each time John passes “start” he receives 15% of the amount he already has. Both students start with $200. a. How much money will Mary have after she has passed “...
August 27, 2014

Math
1USD/xUSD = 0.753 EUR/ 610 EUR x= 810.09 USD 800 AUD/810.09AUD = 810.09 USD/1 USD x = 0.99 AUD Henry and Jack thank you so much for helping me but do you think my answer is correct? Thank you so much
August 27, 2014

Math
The exchange rate from US dollars (USD) to euros (EUR) is given by 1 USD = 0.753 EUR. Give the answers to the following correct to two decimal places. Roger receives 800 Australian dollars (AUD) for 610 EUR. Calculate the value of the US dollar in Australian dollars. Please ...
August 27, 2014

5th grade math
How do you find the dimensions of a box that hold 2xs as many cubes as a box that is 2 by 3 by 4?
May 12, 2014

math
Hi Steve, thank you so much for everything:))) Have a very nice day
May 5, 2014

math
Peter has a cylindrical block of wood od diameter 6 cm and height 18 cm. He glues the base to a board, but wants to paint the rest of the block. He wants to paint the bottom half of the wood black and the top half white. a) Calculate the surface area of the block that Peter ...
May 5, 2014

Math
Peter has a cylindrical block of wood od diameter 6 cm and height 18 cm. He glues the base to a board, but wants to paint the rest of the block. He wants to paint the bottom half of the wood black and the top half white. a) Calculate the surface area of the block that Peter ...
May 5, 2014

math urgent please
value of block is: 169,641 x0.03 $ / 12 = 0.42 $ 197.901 X 0.04 $/ 15 = 0.527736 $ 0.42 + 0.527736 = 0.947736 $ Petr could paint his entire block less than to $1.oo.
May 4, 2014

math urgent please
Petr has a cylindrical block of wood od diameter 6 cm and height 18 cm. He glues the base to a board, but wants to paint the rest of the block. He wants to paint the bottom half of the wood black and the top half white. a) Calculate the surface area of the block that Peter ...
May 4, 2014

Math
You are so so nice, thank you so much:)))))You saved my love!!!!
May 4, 2014

Math
Claire wants to determine how brightly to illuminate her stage. stage width (in metres) x stage length (in metres) x 0.14 = total watts for stage If her stage is 7.25 metros wide and 11.5 metres long, a) calculate the exact number of watts needid to illuminate the stage b) ...
May 4, 2014

math
Claire wants to determine how brightly to illuminate her stage. stage width (in metres) x stage length (in metres) x 0.14 = total watts for stage If her stage is 7.25 metros wide and 11.5 metres long, a) calculate the exact number of watts needid to illuminate the stage b) ...
May 3, 2014

Math
Caroline says to Jed, "If you insult me one more time, I am going to slap you!" Jed replies, "That's OK, Caroline. If I don't insult you, you will be able to slap me anyway." If p=you insult me one more time and q=I am going to slap you Explain ...
May 3, 2014

Math
Thank you so much . a)Equation is x=-1vertical asympt. Is it correct please?
May 3, 2014

Math
two functions are defined as follows: f(x)=3/x+1 and g(x)=x-6 a) Write the equations of the vertical and horizonal asymptotes of f. b) Determine the coordinates of the points where f(x) = g(x) Thank you so much for huge help Is ti correct please? answer for a) vertical asympt...
May 3, 2014

Math
A 12 cm by 12 cm ice cube tray is in the shape of a cuboid with twelve hemispheres inset. The depth of each hemispheres is 1 cm. a) If all the hemispheres were filled with water, calculate the total volume of water that the ice cube tray could hold. It is now desired to paint ...
April 28, 2014

math
A 12 cm by 12 cm ice cube tray is in the shape of a cuboid with twelve hemispheres inset. The depth of each hemispheres is 1 cm. a) If all the hemispheres were filled with water, calculate the total volume of water that the ice cube tray could hold. It is now desired to paint ...
April 28, 2014

Math
Steve, thank you so much, you are amazing!!!!!
April 28, 2014

Math
A swimming pool is in the shape of a cuboid with dimensions 50 metres long by 25 metros wide by 2.5 metres deep. If the pool is completely filled with water, calculate a) the volume of water in the pool b) the longest straight distance a swimmer could swim in the pool c0 the ...
April 28, 2014

math
Thank you so much, a) 25.1 cm^3 b) 6.28 cm ^2 c)144-75.36 =68.64 Is it correct? Thank you so much
April 28, 2014

math
A 12 cm by 12 cm ice cube tray is in the shape of a cuboid with twelve hemispheres inset. The depth of each hemispheres is 1 cm. a) If all the hemispheres were filled with water, calculate the total volume of water that the ice cube tray could hold. It is now desired to paint ...
April 28, 2014

Math
A 12 cm by 12 cm ice cube tray is in the shape of a cuboid with twelve hemispheres inset. The depth of each hemispheres is 1 cm. a) If all the hemispheres were filled with water, calculate the total volume of water that the ice cube tray could hold. It is now desired to paint ...
April 27, 2014

math
Thank you so much:)))
April 9, 2014

math
10t-640/t^2 = 0 Thank you so much for huge help:)))
April 9, 2014

Math
46354 miles might be the answer. I didn't say that it's right.
March 26, 2014

LECTRICAL ENGINEERING
WHAT IS THE FORMULAR FOR CALCULATING THERMAL ENERGY WHEN GIVEN CURRENT,VOLTAGE,TIME,TEMPERATURE
March 6, 2014

math
100=1.5((1.1^(n) - 1))/1.1-1 Could you be so nice please and help me find the solution. The answer is 22 but I have whole time different number. I use log on both sides : 100=1.5((1.1^(n) - 1))/1.1-1 10 = 1.5(1.1^(n) - 1) 10 = 1.65^n - 0.5) log 10.5 = n log 1.65 n = 0.21321 ...
February 23, 2014

math
100=1.5(1.1^n - 1)/1.1-1 Could you be so nice please and help me find the solution. The answer is 22 but I have whole time different number. I use log on both sides : 100=1.5(1.1^n - 1)/1.1-1 10 = 1.5(1.1^n - 1) 10 = 1.65^n - 0.5) log 10.5 = n log 1.65 n = 0.21321 Thank you so...
February 23, 2014

math
On the first day he runs 1.5 km. Every day he runs 10% more than the day befor. a) Write down the distance he runs on the second day of training. ..... 1,5km +0,15 = 1,65 km b) Calculate the total distance He runs in the first seven days of training. When I counted my answer ...
February 22, 2014

life orientation
what is life orientation?
January 27, 2014

math
U is the set of positive integers less than or equal to 30. A is the set of natural numbers that are multiples of 5 in U. B is the subset of all of the even integers in U. a) Find n(A U B) b) Find n(A intersect B) c) Find n(A U B' ) d Find n(B intersect A') Thank you ...
January 25, 2014

math
U is the set of positive integers less than or equal to 30. A is the set of natural numbers that are multiples of 5 in U. B is the subset of all of the even integers in U. a) Find n(A U B) b) Find n(A intersect B) c) Find n(A U B' ) d Find n(B intersect A') Thank you ...
January 24, 2014

Math
A is the set of all multiples of 4 that are less than or equal to 20. B is the set of all of factors of 24. Find A U B. Thank you so much for huge help:)))
January 24, 2014

Math
In a group of 105 students, 70 students passed Mathematics, 60 students passed History and 45 students passed Geography; 30 students passed Mathematics and History, 35 students passed History and Geography, 25 passed Mathematics and Geography, and 15 passed all three subjects...
January 24, 2014

math
In a group of 105 students, 70 students passed Mathematics, 60 students passed History and 45 students passed Geography; 30 students passed Mathematics and History, 35 students passed History and Geography, 25 passed Mathematics and Geography, and 15 passed all three subjects...
January 23, 2014

Physics
A bullet whose mass is 0.0015kg leaves a 5kg leaves a 5kg rifle at a muzzle velocity of 800 m/s. It strikes a 7kg block of wood and becomes embedded in it. After the bullet hits the rock, what is the speed of the bullet/ block system?
January 15, 2014

math
The graph of the function f(x)=2^x/a passes through the points (0,b) and (2,0.8). Calculate the values of a and b. Thank you so much for huge help:)))
November 10, 2013

math
A rocket follows a parabolic trajectory. After t seconds, the vertical height of the rocket above the ground, in metres, is given by H(t) = 37t – t . Find the length of time the rocket is in the air. Could you please explain me, why answer is 37s? Thank you so, so much:))
October 24, 2013

math
A company's weekly profit, in riyals, is modeled by the function P(u)=-0.032u^2+46u-3000. where u is the number of units sold each week. a) the maximum weekly profit. Answer: 13531.25 riyals b) the loss for week's holiday period, where no units are sold .Answer:3000 ...
October 24, 2013

math
A company's weekly profit, in riyals, is modeled by the function P(u)=-0.032u^2+46u-3000. where u is the number of units sold each week. a) the maximum weekly profit. Answer: 13531.25 riyals b) the loss for week's holiday period, where no units are sold .Answer:3000 ...
October 23, 2013

math
A company's weekly profit, in riyals, is modeled by the function P(u)=-0.032u^2+46u-3000. where u is the number of units sold each week. a) the maximum weekly profit b) the loss for week's holiday period, where no units are sold c) the number of units sold each at ...
October 22, 2013

math
A farmer has 110 metres of fencing to fence off a rectangular area. Part of one side is a wall of length 15m. Find the dimensions of the field that give the maximum area. Answers: length and width = 31,25m Thank you so much for a huge help.
October 22, 2013

math
A farmer has 110 metres of fencing to fence off a rectangular area. Part of one side is a wall of length 15m. Find the dimensions of the field that give the maximum area. Thank you so much for a huge help.
October 22, 2013

physics
football is kicked off with an initial speed of 66 ft/s at a projection angle of 45 degrees. A receiver on the goal line 63 yd away in the direction of the kick starts running to meet the ball at that instant. What must be his minimum speed (in feet/second) if he is to catch ...
September 30, 2013

physics
Suppose that it takes exactly 17.0 hr to drain a container of 6.20 liters of water. What is the average mass flow rate (in kilograms/second) of water from the container? Assume that the density (mass/volume) of water is exactly 1 g/cm^3.
September 9, 2013

math
550 GBP x 1.18 Euro = 649 Euro 649 - 629 = 20 Euro 1GBP x 20 Euro / 1.18 Euro = 16.94 Euro
September 8, 2013

math
Minni travels to Italy. She changes 550 GBP to euros at an exchange rate of 1 GBP = 1.18 euros. The bank charges commission and then gives Minni 629 euros. Find the amout of the commission in GBP. Thank you so much:))
September 8, 2013

Math, HELP!! URGENT!
Please Simplify: (1/8)(40v−24y)−(1/7)(21v−35y+9)−(1/6) (1/11)(55x−22)−(1/2)(18x−2v)
August 29, 2013

social studies
The Constitution didn't have any protection for individuals. They wanted to put in a Bill of Rights that specifically spelled out rights and freedoms of the citizens.
May 1, 2013

Calculus
A rancher wants to make an animal pen by fencing in an area of 2500000 square feet in a rectangular field and then divide it up with 5 fences down the middle parallel to one side. The rancher wants to use the shortest total length of fencing possible. If she accomplishes that...
April 30, 2013

math
1.65 - .50 is 1.15. If you have 11 dimes you'll get 1.10, then add a nickel to make it 1.15. So the twelve remaining coins are 11 dimes and a nickel.
April 29, 2013

Biology
I think it's b.
April 28, 2013

American History
I think it's b. There wasn't that many miles of railroad track in 1820.
April 28, 2013

national governoment
I'm not sure which Nullification you are speaking about, but in the Kentucky and Virginia Resolutions of 1798-1799 Thomas Jefferson and James Madison argued a state had the right to nullify a federal law. The Articles of Confederation, by creating a weak central government...
April 22, 2013

Child Develompment
I think anger is the answer.
April 22, 2013

agriculture
name one intensive and one extensive system of poultry farming
April 2, 2013

agriculture
explain how any three of the records which are kept for the efficient management of a dairy herd be used to improve management
April 2, 2013

agriculture
state and explain what records should be kept for the efficient management of a dairy herd
April 2, 2013

agriculture
what are the important features of a building which could be used as a milking shed(parlour),dairy(milk room) and food store to ensure production of clean fresh milk?
April 2, 2013

agriculture
so like what do they mean when they say outline and explain the objectives of fencing a farmland
April 2, 2013

agriculture
nah ma'am,it is a research project that am doing and a cant find the relevant answers when googling
April 2, 2013

agriculture
am a Lil bit confused,would you mind please elaborating a bit
April 2, 2013

agriculture
outline and explain the objectives of fencing a farmland
April 2, 2013

Life Orientation
5 factors that causes accidents
March 20, 2013

Math
6.3
March 18, 2013

Maths-financial
Determine the compound interest rate,correct to two decimal places,Emile would require to triple his investment over a period of 10 years?
March 7, 2013

Maths-financial
Lucas invests R4million into an account earning interest of 6% per annum compounded monthly.He withdraws an allowance of R30000 per month.The first withdrawal is exactly one month after he has deposited the R4million.How many such withdrawals will Lucas be able to make?
February 27, 2013

Maths
How dd u fynd dem....lyk de steps
February 26, 2013

Maths
In a quadratic sequence.....Term 2 is 11,Term 4 is -7,term 7 is -64....determin the general term for the sequence
February 26, 2013

Maths-financial
Ted needs to take out a loan to buy a new bicycle.He is able to repay the loan by means of 15 semi-annual payments of R2500,starting in 6months from now,when interest is 16% p.a compounded quartely.Calculate the amount of the loan
February 19, 2013

Maths
A farmer deposits R11 944, for 60 months to buy a tractor.suppose that 12 months afta the purchase of the present tractor and every 12 months thereafter,the farmer withdraws R5000 from his account to pay for maintanance of the tractor.If he makes such withdrawls,what will the ...
February 10, 2013

Maths
Determine how long in years it will take the value of a motor vehicle to decrease to 25% of its original value if the rate of depreciation based on the reducing balance method is 21% per annum?
February 7, 2013

Maths
How long would it take the 4th snail to travel 1km?
February 6, 2013

Maths
Thato caught 4 snails and placed them all in the same small circle on the ground and organised a race......1st snail travelled 24cm in 4minutes,2nd snail travelled 35 cm in 7minutes,3rd snail travelled 33cm in 5minutes and the 4th snail travelled 39cm in 6minutes..... (1)how ...
February 6, 2013

Maths
N is over the sigma sign which is 5 and r is under the sigma sign which is =1.......
February 4, 2013

Maths
If n=5 and r=1 (1+b)=10a,determine b in terms of a
February 4, 2013

Maths
1..The first 2 terms of a geometric progression are the same as the first two terms of an arithmetic progression.The first term is 12 and is greater than the second term.The sum of the first 3 terms od the arithmetic progression is 4/3 less than the sum of the first 3 terms of...
February 3, 2013

Maths
Eric thinks of 2 sequences.One is geometric and the other arithmetic.Both sequences start with the number 3.The common ratio of the geometric sequence is the same as the common difference of the arithmetic sequence.If the 6-th term of the geometric sequence is 96.Find the ...
February 3, 2013

Maths
An arithmetic and a geometric sequence have the same first terms.(2)....and the same second term say X..The sum of the first 3 terms of the arithmetic sequence equals to the third term of the geometric sequence.Calculate the first 3 terms of each sequences
February 3, 2013

Maths and science
The sum of the first n terms of a sequence is given by 4-4(1/2)^n.calculate the first 3 terms
February 3, 2013

ferreira
i need helo with this poem for sci that is about chlorine can some one help me
December 12, 2012

algebra
-4r^2+21r=r+13 3s^2-26s+2=5s^2+1 Please, please could you be so nice and help me with step by step, I can't find right solution, Thank you so much!!!!
December 9, 2012

finance
Given: WACC= 12%, NPV=+1,491.39, IRR=14.87378%, your all-equity firm has 5,000 common shares outstanding, and the cash flows are: CF0= -18,000, CF1= 3,000 CF2= 3,000, CF3=7,000, CF4?, CF5= 10,000. What is the cash flow at time-point 4.
October 17, 2012

Finance Homework
You are told by the finance section that a particular projects NPV is positive, but that the standard deviation of the NPV (after performing a monte carlo simulation) is exactly triple the expected NPV figure. If NPV is normally distributed, what is the probability that the ...
October 17, 2012

geometry
Find the length of a rectangle if its diagonal is 34 cm long and the angle the diagonal makes with the length is 27° 50'. (answer correct to the nearest centimetr) Thank you so much Could you be so nice and explain me ho I will count 27° 50'?
May 25, 2012

geometry
The sector shown is formed into a cone by joining its two radii. Calculate the volume of the cone correct to the nearest whole number. It shows a diagram with a 240 degree sector or two-thirds of a circle with a radius of 12 cm. How do I do this? Thank you so much
May 15, 2012

geometry
A tetrahedron is a triangular pyramid in which each face is an equilateral triangle. Calculate the volume of a tetrahedron that has all its edges 6 cm in length. Hint: You will need to know some geometry and trigonometry.
May 15, 2012

geometry
Calculate the volume of a square pyramid if it has a base area of 64 cm^2 and the distance from the apex to a corner of the base is 15 cm. Thank you so much!!!
May 15, 2012

geometry
Find the surface area of pyramid that has a regular hexagonal base od edge 6 cm and a height of 8 cm. Thank you so much
May 13, 2012

geometry
Find the surface area of pyramid that has a regular hexagonal base od edge 6 cm and a height of 8 cm. Thank you so much
May 13, 2012

algebra
A rectangular prism has a volume of 750 cubic millimeters. Its length is 15 millimeters, and its width is 10 millimeters. What is its height
May 7, 2012

algebra
The equations are 2x+y=80 and 2x=y. "x" being the widthof the fence coming off the barn and "y" being the length connecting those two pieces. When one side is as big as nessasary (aka the barn, river, wall, etc.) the length is double the width. The ...
March 5, 2012

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