Wednesday

April 23, 2014

April 23, 2014

Total # Posts: 113

**math**

Thank you so much:)))

**math**

10t-640/t^2 = 0 Thank you so much for huge help:)))

**Math**

46354 miles might be the answer. I didn't say that it's right.

**LECTRICAL ENGINEERING**

WHAT IS THE FORMULAR FOR CALCULATING THERMAL ENERGY WHEN GIVEN CURRENT,VOLTAGE,TIME,TEMPERATURE

**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 Th...

**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...

**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 i...

**life orientation**

what is life orientation?

**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 s...

**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 s...

**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:)))

**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....

**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....

**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?

**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:)))

**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:))

**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 ri...

**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 ri...

**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 brea...

**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.

**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.

**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 ...

**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.

**math**

550 GBP x 1.18 Euro = 649 Euro 649 - 629 = 20 Euro 1GBP x 20 Euro / 1.18 Euro = 16.94 Euro

**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:))

**Math, HELP!! URGENT!**

Please Simplify: (1/8)(40v−24y)−(1/7)(21v−35y+9)−(1/6) (1/11)(55x−22)−(1/2)(18x−2v)

**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.

**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,...

**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.

**Biology**

I think it's b.

**American History**

I think it's b. There wasn't that many miles of railroad track in 1820.

**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...

**Child Develompment**

I think anger is the answer.

**agriculture**

name one intensive and one extensive system of poultry farming

**agriculture**

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

**agriculture**

state and explain what records should be kept for the efficient management of a dairy herd

**agriculture**

Ke di fern le difridge

**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?

**agriculture**

so like what do they mean when they say outline and explain the objectives of fencing a farmland

**agriculture**

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

**agriculture**

am a Lil bit confused,would you mind please elaborating a bit

**agriculture**

outline and explain the objectives of fencing a farmland

**Life Orientation**

5 factors that causes accidents

**Math**

6.3

**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?

**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?

**Maths**

How dd u fynd dem....lyk de steps

**Maths**

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

**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

**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 ...

**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?

**Maths**

How long would it take the 4th snail to travel 1km?

**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 f...

**Maths**

N is over the sigma sign which is 5 and r is under the sigma sign which is =1.......

**Maths**

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

**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...

**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 firs...

**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

**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

**ferreira**

i need helo with this poem for sci that is about chlorine can some one help me

**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!!!!

**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.

**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 pr...

**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'?

**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

**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.

**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!!!

**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

**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

**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

**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 perimete...

**chemistry**

Arrange the species O2, O2^+, O2^-, and O2^2- in order of increasing O-O bond length.

**chemistry**

Al(NO3)3 + NH3 --> ?

**chemistry**

I^- H5IO6 BrO2 HClO I2 Which could not disproportionate?

**chemistry**

3Ag(s)+4HNO3(aq)-->3AgNO3(aq)+NO(g)+2H2O(l) Write the new ionic equation.

**chemistry**

What would happen if MnO2 was mixed with KBrO3 ND 9 M sulfuric acid?

**chemistry**

What would happen if chlorine water was added to an aqueous solution of sodium chloride?

**chemistry**

Mass of sample 0.0581 g Mass of BaSO4 0.0860 g What is the mass of sulfate?

**chemistry**

A chemistry student weighs out 0.172 grams of acrylic acid (HCH2CHCO2) into a volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1800 moles/liter NaOH solution. Calculate the volume of NaOH solution the student will need to add t...

**math**

Why Ms.Sue?

**Social Studies**

"How are African Mahogany trees grown, harvested and transported?" Thank you Ms.Sue for the link but if you read the information in this Wikipedia article you will see that none of these questions are addressed.

**Social Studies**

How are African Mahogany trees grown, harvested and transported?

**math**

insert a pair of parentheses in equation to show the associative property.

**AP Physics**

A car slows down from 18 m/s to rest in a distance of 91 m. What was its acceleration, assumed constant?

**math**

Write two other ratios equal to 9/12?

**math**

Describe the relationship between x and y. x: +5,+2,0,-3 y: 3,0,-2,-5

**math**

complete the table: y= x - +4 x: +4,0,-4.-6 y: ?,?,?,?

**Algebra **

randomly select a generator

**Math**

kyle just started a new job that pays $7 per hour. He had been making $5 per hour at his old job. Kyle worked a total of 54 hours last month and made $388 before deductions. How many hours did he work at his new job?

**Math**

kyle just started a new job that pays $7 per hour. He had been making $5 per hour at his old job. Kyle worked a total of 54 hours last month and made $388 before deductions. How many hours did he work at his new job?

**Chem**

Using condensed electron configurations, give reactions showing the formation of the common ions of the following elements. (Type your answers in the following order. In the first box enter your answer using the format [Ar] 4s2 3d10 4p2 for [Ar]4s23d104p2. For second box enter...

**Chem.**

Using condensed electron configurations, give reactions showing the formation of the common ions of the following elements. (Type your answers in the following order. In the first box enter your answer using the format [Ar] 4s2 3d10 4p2 for [Ar]4s23d104p2. For second box enter...

**chemistry**

An element has an ion with +2 charge.It has 38 electrons and 51 neutrons. write the nuclear symbol for the element.

**physics**

A 2.000-kg particle rests on a frictionless horizontal surface and is attached to the free end of a spring. The particle is pulled horizontally so that it stretches the spring 0.05 m and is then released from rest at t = 0. Determine the displacement, x, of the particle from t...

**Math**

no they are not, the second one is transmitting more than the first one. in 8 seconds the first one will transmitt 22, where in 8 seconds the second one will transmit 33.

**math**

4 = 32/(16/2) 1 = (32/16)/2

**algebra 2**

8^2 + 3^2 = g^2 64 + 8 = g^2 73 = g^2 g = 73^1/2

**PHYSICS**

A 75 g bungee cord has an equilibrium length of 1.20 m. The cord is stretched to a length of 1.80 m, then vibrated at 20 Hz. This produces a standing wave with two antinodes. What is the spring constant of the bungee cord?

**PHYSICS**

A heavy piece of hanging sculpture is suspended by a 90 cm long, 5.0 g steel wire. When the wind blows hard, the wire hums at its fundamental frequency of 80 Hz. What is the mass of the sculpture?

**PHYSICS**

An electron iwth an initial speed of 500,000 m/s is brought to rest by an electric field. (a) Did the electron move into a region of higher potential or lower potential? (b) What was the potential difference that stopped the electron?