# Posts by Kelvin

Total # Posts: 188

**Science**

Explain the factors that affect the intensities of absorption in IR spectroscopy. #Please anyone to help me with explanation i have to attend test by tomorrow help me out.

**math**

Probably it is like this First find out the number of male out of total in adult which is 3/7 times 5. Then number of men is 15/7 Last c:m = 2:15/7 Simplify it result into 14:15

**math**

The books for Mathematics, Geography and Science in a school are in the ratio 5:7:8. There is a proposal to increase these books by 40%, 50% and 75% respectively. What will be the ratio of the increased books? #Please anyone who can help me out with the clearly solution#

**math**

A bus fare from Arusha to Dar es salaam is sh. 12,000. If the bus goes two trips carrying 7 passengers, how much will be collected after completing those trips? #Please guys anyone to help me this question i need to attend the test#

**math**

Three subjects Geography, Science and English in the library are in the ratio of 5:7:8 which they had increased by 20%,40% and 50%. Find the ratio of increased books # Please guys can you assist me this question#

**math**

Three subjects Geography, Science and English in the library are in the ratio of 5:7:8 which they had increased by 20%,40% and 50%. Find the ratio of increased books # Please guys can you assist me this question#

**Further maths**

In an examination 31 candidate passed Chemistry,29 passed Physics 3 failed both subjects.lf 50 candidates sat for the examination how many of them passed Chemistry only.

**math **

Three people can wash clothes in 1/3 hrs, 1/4 hrs and 1/4 hrs. If they started together at 8:30 am, at what time will they finish this work together? *Please anyone to help me out this question*

**Biochemistry UB Cameroon**

If 8A pass for 2minutes at the cathode(where the following reaction takes place, Ag+ + e- --->Ag) how many grams of silver metal are passed onto the cathode??

**math**

The distance between two towns P and Q is 390 km. John left town P at 7:30 am and travelled towards town Q at an average speed of 60 km/hr. Half an hour later Patrick left town Q and travelled towards town P at the same speed. At what time did they meet? * please guys assist ...

**math**

Ali rode a bicycle from town A to town C through town B as follows.He rode from A to B a distance of 45 km in 3 hours and then rested for 1hr and 1/2 hr.From B he rode to C a distance of 20 km in 1hr and 1/2 hr. Find the average speed riding #Please guys help me out this ...

**math**

Ali rode a bicycle from town A to town C through town B as follows.He rode from A to B a distance of 45 km in 3 hours and then rested for 1hr and 1/2 hr.From B he rode to C a distance of 20 km in 1hr and 1/2 hr. Find the average speed riding #Please guys help me out this ...

**math **

If a trapezium was drawn such that it has got two right angled triangles,why the area of that trapezium will differ if someone is considering the areas of two right angled triangles lastly he/she add to obtain the total areas from the one who will use the formula for finding ...

**math**

may you direct me how to bring the figure here

**math**

If a trapezium was drawn such that it has got two right angled triangles,why the area of that trapezium will differ if someone is considering the areas of two right angled triangles lastly he/she add to obtain the total areas from the one who will use the formula for finding ...

**math**

The three co-ordinates of a rectangle are A(3,-4), B(-1,4), C(4,2).Find the fourth co-ordinate #Plz guyz may you help me out this question I tried to work with graph paper but i did not get the solution

**math**

i use the graph paper but i did not make it

**math**

The three co-ordinates of a rectangle are A(3,-4), B(-1,4), C(4,2).Find the fourth co-ordinate #Plz guyz may you help me out this question

**math**

find the next number in the following sequence; 1/2,2/3,3/5,5/8, _ *please i need your assistance guys for this question* My idea is as follows denominator part for the given fraction =1+2 =3 then 2+3 =5, 3+5=8,therefore the next denominator part = 5+8 =13 hence the answ. 8/13...

**math**

16 persons need 56 kg of rice in 1 week. How much rice will be needed by 24 persons in four weeks? ^please anyone over here ryt now may you help me to arrive to the final answer^ 24×(56/16)× 4 math - kelvin today at 2:22pm i had the this idea but i shocked when i ...

**math**

how if a peson will start to count from 8:10 morning to 11:40 night

**math **

How many minutes are there between 11:40 night and 8:10 morning? please help me out

**math**

i had the same idea but i shocked when i saw the answer so if there is another idea plz help me out The answer from the book is 280 kg

**math**

16 persons need 56 kg of rice in 1 week. How much rice will be needed by 24 persons in four weeks? ^please anyone over here ryt now may you help me to arrive to the final answe^

**math**

12 ÷ 3/4= 12× 4/3= 16 pieces of cloth can be cut

**math**

Why we should find for percent the interest while we have asked to find the amount of interest please can you explain to me which word imply the required is percentage interest

**math**

Asha deposited sh. 280,000 into the bank.After 4 years her savings reached sh. 386,400.Find the amount of interest per year paid by the bank. #Please i need your help guys #

**math**

find the next number in the following sequence; 3,5,7,11,_ #anyone to help me plz #

**math**

9 men dig a farm for 5 days.How many days will 6 men take into finish the same farm?

**math**

ms sue i knew the prime numbers between that gaps are 23 and 29. The problem is the question in which it required to find the difference so which value will be subtracted from another

**math**

Find the difference between the sum of even numbers between 100 and 110 and the product of prime numbers between 20 and 30. #anyone to help me out

**math**

i need your help guys #A fruit vendor bought 600 apples for $ 4800. He spent $ 400 on transportation. How much should he sell each to get a profit of $ 1000?

**math**

1A56B is a five digit number. When 1A56B is divided by 36 the remainder is 23. How many possible value can A take? #anyone to help me out

**math**

Find the ratio of LCM to GCF of 9,18 and 52 #anyone to help me please

**math**

I need anyone to help me please# Cecilia travelled a distance of 24 km at a speed of 18 km per hour. She rested for 30 minutes and then she complete the remaining 6 km at a speed of 20 km per hour. How much time did she use to cover this distance.

**Social Sutdies **

What are answers to week 26 for forth grade

**math**

A cow is tied with a rope of length 14 m at the corner of rectangular field measured 20 m by 16 m. Find the area of the field in which the cow can graze. #anyone to help me with proper and systematic step by step solution

**math**

a car traveled to and back home for 2 hours.if the speed was maintained constant at 30 km per hr.Find the distance in which a car traveled? help me ms sue

**math**

find the square root of 21

**math**

write zero in roman numeral.

**math**

time taken = 10 am - 8 am = 2 hrs distance won't change so Distance = speed multiply time. 50 times 2 =100 km then time taken 100 divide by 40 = 2 hrs 30 min so from 8 am add 2hrs 30min =10:30 am

**math**

Find the cost of buying 4 dozen of exercise books at sh 6000 per dozen,a half dozen of pencil at sh 2050 per dozen,5 dozen rulers at sh 3600 per dozen #i need anyone to help me please# and in case someone has such type of questions,i am kindly need for practice *Thanks for the...

**math**

Dallas was given a discount of 10 percent of the following items: 1/1/4 cartons of exercise books @ sh 42000 per cartons,ten cartons of pens sh 22000 each.How much did he pay all together after the discount of 10 percent? *I need anyone to help me please* And in case someone ...

**math**

Dallas was given a discount of 10 percent of the following items: 1/1/4 cartons of exercise books @ sh 42000 per cartons,ten cartons of pens sh 22000 each.How much did he pay all together after the discount of 10 percent? *I need anyone to help me please* And in case someone ...

**math**

ms sue thanks for the help in case of questions I searched but I didn't get any so if you have a website or any other sources of such questions may you inform me please

**math**

Find the cost of buying 4 dozen of exercise books at sh 6000 per dozen,a half dozen of pencil at sh 2050 per dozen,5 dozen rulers at sh 3600 per dozen #i need anyone to help me please# and in case someone know where i can get such the questions,i am kindly need for practice *...

**math**

can you take 36000 + 480000 after that to fulfill the requirement of questions or it is wrong?? @Anonymous

**math**

A woman deposited Tsh 480000 in CRBD which charges an interest of 15% per annum.How much did she get after six months?# anyone to help me plz#

**math sets**

out of 320 students at a university,190 taking math,235 taking chemistry and 120 taking physics.125 are taking both chemistry and math,95 taking both chemistry AND PHYSIC,55 TAKING BOTH MATH AND PHYSICS.HOW MANY ARE TAKING ALL THE THREE SUBJECTS

**braindrain**

some have more than 100 some none but matiangi has two

**math**

a boy spends 3/8 of his money on food and 2/5 of the remainder on books, and had $15.how much did he have

**MATH**

If vector a + vector b + vector c = 0.and magnitude of a = 3,magitude of b = 5 and magnitude of c = 7.Find the angle between a and b?please anyone to help me i have exam tomorrow

**English Riddle**

cap

**chem**

A sample of H2(g) expands adiabatically and reversibly from a state 1 where p1 = 200000Pa,V1 = 0.002m3 and T1 = 300K to a state 2 where V2 = 0.004m3.Assume the gas to behave as an ideal gas calculate the final temperature and its pressure.Use the constant value,Cp = 28.8 j/...

**math**

how about the time because from interest,I = prt

**math**

When the rate of interest in the bank is increased from 5% to 6% per annum,Gerald deposits Tsh 12,000 more into his account.If annum interest now received by him is Tsh 1100 more than that before,find his original deposit.**please anyone to help me with the solution***

**Math**

thanks for your solutions @steve and reiny

**Math**

Joseph deposited a certain amount of money.He earned one over nine of its principal at the number of years equal to the rate provided.Find the interest rate provided.**i need your help guys+++

**Chemistry**

The molar enthalpy of combustion of demand is -6.78KJ/mol.What mass of decane would have to be burned in order to raise the temperature of 500ml of water from 20 degrees Celsius to 55 degrees celsius. I tried using ndeltaH=mcdeltat. But it didn't work. Please help

**Math**

Mabatini primary school sold to a nearby school a third of her sacks of beans harvested last year,and used one over four of the remaining for food.If the remaining sacks were sold to the pupils at the price of 8000 shillings each,and thus giving the total amount of 216000 ...

**Math**

Ten years ago the age of Mukajange was one over five of that of his father then.Five years to come the age of Mukajange will be a half of that of his father.Find the present age of Mukajange.#####Please any one to help me

**MATH**

Fupi used 0.2 of his salary,sh 32,800 per month for school fees,quarter of the remained amount,he deposited at the bank and the rest amount used for other expenses.How much were used for other expenses?******************To my side,i solved like this tell me whether i am ...

**MATH**

Fupi used 0.2 of his salary,sh 32,800 per month for school fees,quarter of the remained amount,he deposited at the bank and the rest amount used for other expenses.How much were used for other expenses?******************To my side,i solved like this tell me whether i am ...

**math**

Fupi used 0.2 of his salary,sh 32,800 per month for school fees,quarter of the remained amount,he deposited at the bank and the rest amount used for other expenses.How much were used for other expenses?#########To my side,i solved like this tell me whether i am correct or not...

**math**

Fupi used 0.2 of his salary,sh 32,800 per month for school fees,quarter of the remained amount,he deposited at the bank and the rest amount used for other expenses.How much were used for other expenses?#######please anyone one to help me with the solution***************may i ...

**math**

To my side,i solved like this tell me whether i am correct or not........................ 0.2 of his salary is for school fees in which the school fees = 32,800.let the salary be y then, 0.2 × y=32,800 which gives the value of y as the salary =164,000.Quarter of the ...

**math**

may i assume 32,800 as the school fees that can be correct mr.Reiny?

**math**

Fupi used 0.2 of his salary,sh 32,800 per month for school fees,quarter of the remained amount,he deposited at the bank and the rest amount used for other expenses.How much were used for other expenses?please anyone one to help me with the solution

**maths**

A plane leaves an airport x,20-60E and 36-80N and flies due south along the same longitude for 8hours at the rate of 1000km/h to another airport Y,20-60E and titaS.the plane then flies west to another airport Z for 8hours at the same speed. Calculate to the nearest degree (a) ...

**math**

The average age of 24 pupils is 15 years while the average age of 16 pupils is 14 years.What is average age of 40 pupils in a class?please i need anyone to help me

**math**

it comes 14.6 years do i suppose to write that answer or i should approximate to 15 years because there is no decimal or fraction years

**math**

thank @ms sue help me out this one also............The average age of 24 pupils is 15 years while the average age of 16 pupils is 14 years.What is average age of 40 pupils in a class?

**math**

Marium travels a distance of 8 km everday to and from the school.What is the total distance will she travel for 40 days? i need a help please

**algebra help**

from x-y=0 then x=y.substitute into x-2y=6 it will be y-2y=6,which y= -6 and since x=y then x= -6

**math**

find the next number in the following sequence 110,98,87,71,___ please i need someone to give an answer

**Math**

tuesday because it will be second day after the two weeks

**math**

if the total surface area of a pipe is 396 cm^2 and its height is 14 cm.find the diameter of the pipe.any one to help me please

**math**

are we counting 17th as day one till 4th as the day last or we are starting 18th as the day one.@Ms.sue

**math**

Gillian did not attend to school from 17th january 2012 to 4th february 2012.How many days did Gillian miss the school?please anyone to solve it and show clear solution

**Math**

Brianna is a flight student and is in the process of acquiring her private license in a Solo flight she uses a single engine airplane and travels a distance of 15 meters before takeoff in the air she travels at an approximate rate of 27 m/s on there no wind conditions use an ...

**math**

@Ms.Sue

**math**

i thought the question require the total value which is 0.02

**math**

what is the value of 2 in 36.325.#any one can answer this#

**math**

what is the value of 2 in 26.325.#any one can answer this#

**math**

Greetings telegram on special code:50cts Ordinary telegram costs sh 3 for 10 words ,each extra word at 30 ct. Find the cost of the following telegram. CHARLES MUSHI BOX 123 MUSHI WISHING YOU A MERRY CHRISTMAS PETER JOHN #The problem is on greeting telegram and ordinary ...

**math**

then you should add cost for first ten words plus cost for extra 3 words plus cost of greeting telegram code which is 50 ct??? 3 sh +3*30cts+50cts am I correct?

**math**

The problem is on greeting telegram and ordinary telegram.there are 13 words so how can i apply the rate of charges

**math**

Greetings telegram on special code:50cts Ordinary telegram costs sh 3 for 10 words ,each extra word at 30 ct. Find the cost of the following telegram. CHARLES MUSHI BOX 123 MUSHI WISHING YOU A MERRY CHRISTMAS PETER JOHN. #how can i arrive to the answer,i need your help#

**math**

so the water will not wet one of the base area of the cylinder since you said lateral area and the formula is 2*pie*r*h

**math**

A cylindrical tank of diameter 4m contains water to a height of 3 m.What area of the surface is wet? any idea please

**math**

write 1459 into italics numeral. please anyone to help me I stuck whether the italic is the same as roman number and my teacher repeat the same question twice

**math**

James paid Tsh 10000 to buy the following items: 4.5 kg@600/=,2kg@1200/= and tomatoes 3kg by 1500/=.How much did he remain?#any one to help me please *

**math**

Write in italic numeral 1959. #any one to help me please***

**math**

Write in italic numeral 1959.+any one to help me***

**math**

James paid Tsh 10000 to buy the following items: 4.5 kg@600/=,2kg@1200/= and tomatoes 3kg by 1500/=.How much did he remain?#any one to help me please *

**math**

Ali puts sh 5000 for 1 year and Alex puts sh 8000 for 9 months to start a business.They shared their profit at the end of the year.Ally share comes to sh 2000.What will be Alex's share? please I need your help* the answer is 2400/= hw can I arrive that answer

**math**

Ali puts sh 5000 for 1 year and Alex puts sh 8000 for 9 months to start a business.They shared their profit at the end of the year.Ally share comes to sh 2000.What will be Alex's share? please I need your help*

**math**

Ali puts sh 5000 for 1 year and Alex puts sh 8000 for 9 months to start a business.They shared their profit at the end of the year.Ally share comes to sh 2000.What will be Alex's share? please I need your help*

**math**

the radius of semi circle is 30 cm.Find its circumference Note:what formula can i use (pie*r + 2r) or (pie*r + r)

**math**

find the square root of √625. #any idea please