trial and improvement

1 tenth of £1.00

1/4 of km =?m

£20 is shared out between bob and katheryn in the ratio 1:3. what fraction of the £20 does bob get?

3 monkeys ate a total of 25 nuts. Each one ate a different odd number of nuts. How many nuts did each monkey eat?

Carlos is ten years older than Jose. Five years ago Carlos was three times as old as Jose. How old is Jose now? here's what i have so far: jose=j carlos=10+j

five years ago carlos would be: (10+j)-5? i'm not sure if i'm doing this correctly. please help.

amul and kim have £10.70 between them. amul has £3.70 more than kim. how much does each have

working out!

An empty carton weighs 750 grams. Packet of crisps weigh 27 grams each. calculate the total weight (in grams) of a carton filled with 24 packets of crisps

3/12 =4 so divide 3788 by answer im guessing

x1/2(3x+x^-2)

A veterinarian needs 60 pounds of dog food that is 15% protein. He will combine a beef mix that is 18% protein with a bacon mix that is 9% protein. How many pounds of each does he need to make the 15% protein mix. Define your variables and write a system of equations to solve.

I have seen questions before in GCSE papers that talk about expressing an answer to an appropriate degree of accuracy. What does that mean and how do I get the right answer?

Assume that it costs Microsoft approximately C(x) = 57,600 + 550x + 0.01x2 dollars to manufacture x Xbox 360s in a day.How many Xboxes should be manufactured in order to minimize average cost? What is the resulting average cost of an xbox?

hello, i was wondering if anyone could answer this question and explain, i will be happy if you do so.

'Work out each of these, giving your answers to the nearest penny.' a) £950÷24 b) £551÷12

Remove the brackets and simplify (x-4) (x-7)

In a system the probability that each individual component of type A will fail is 0.05, type B is 0.04 and type C is 0.01. Components A, B and C are independent. a. Calculate the overall probability that each system will work b. Is there any difference in the probability of these systems, why?

i am in year 9 , ks3

Changing the subject - aaargh! Anyone be able to help?xx

So i found a question which i think looks and is tricky: 1/x = 1/a + 1/b Find x as the subject..Lead me through it please

what is 90% as a fraction

140* (100+30/100) if the cost price is 140 and 30 percent up how do you find selling price,and where did the 100s come in lol

In geometry, what is the longest side of a right-angled triangle, the side opposite the right angle ?

How do we represent the above facts in 1)axiom form and 2)clausal form

1) All babies are innocent 2) Anyone who is innocent and affectionate will be loved by others 3) Anyone who is loved by others, will receive gifts 4) Teena is an affectionate baby

My thoughts on the question : (Let Vx and Ex denote universal and existential quantifiers respectively )

Let B(x) denote x is a baby I(x) denote x is innocent A(x) denote x is affectionate L(x) denote x is loved by others G(x) denote x receives a gift

Axiom Form : 1) Vx[ B(x) --> I(x) ] 2) Vx[ I(x) ^ A(x) ] --> L(x) 3) Vx [ L(x) --> G(x) ] 4) B(Teena) --> A(Teena)

Have I done the first part correctly? And how do we do the second part?

Thanks!

give a condition on n that is sufficient but not necessary for n/3 belonging to Z.

give a condition on n that is necessary but not sufficient for n/3 belonging to Z

Let n belong Z with n > 1. Consider the statement R: 2n

i need help with a math problem

Using the exact values for the sine and cosine of both 3π/4 and π/3, and the angle difference identity for cosine, find the exact value of cos(5π/12).

I have math problem that I have fully solved but got stuck on two questions at the end. It asks me what is the sales person monthly commission if the commission is 15% and his monthly sales is 11,250.00. Next it asks what is the expense allowance if monthly sales is 1500.00 otherwise the expense allowance is 1500.00. Next it states if the team member monthly sales exceed 1,250.00. Do he receive a bonus? Yes Next it asks if total monthly sales is 86,250.00 (added monthly sales, commission,allowance,and bonus to get this amount)by the total monthly sales) Next it asks what is the total monthly compensation? ( I do not know how to find the compensation) Is is the total of all the numbers. This is where I am lost at the percentage and compensation.

x2+6x+8

finding when two town will have equal population

for what values of c will the equation x^2 + c= 0 have two distinct real roots

Stuck on this question - 200g of meat costs 80p. Find the cost of 1 and a half kgs.

3sin(2x+3)

10 x 23.76

how do you find the lcm?

4 men 8hrs to build a wall, how long would it take 7 men to build same wall?

How long does it take an investment to double if interest is computed as compound interest if the rate is 2%

how many pieces of ribbon each 4.5 cm can be cut from a length of 4 and a ahalf metres

my question is find the points of intersection of the straight lines with equations x + 2y = -5 and 3x - y = 13 ? but i have no idea how to do it please help i am revising for my maths standard grade exam !!

Book: Mathematics focus on understanding 9 page 16 part B

1. Draw a right triangle with legs 1 unit in length as shown. Label the right angles. (I did that)

2. Determine the length of the hypotenuse in radical form. Add this number to your diagram. ( what does that mean?)

3. Draw a second right triangle such that the hypotenuse of the first triangle is a leg of the new triangle. The length of the other leg is 1 unit. Determine the length of the hypotenuse of the new triangle in radical form and add this value to your diagram. ( can someone please explain that in less complicated words? Plz!)

MY homw work says'how meny ways can you get 36 by using only 6 digets

i need 4 ways to make 20 only using,5 digets

i have a cylinder that is 2 feet in diameter and 30 feet in length, if it costs $3.50 per square foot how do i figure out what the approximate total cost is for making this pipe which is open at both ends.

hi,

if its 3:21pm what time will it be in 100mins?

Given: PQRS is a rhombus B is midpoint of segment QC D is midpoint of segment SC Prove: Triangle BAD is an isosceles triangle

Basically on graph paper 1 big square or 10 little ones = 0.25 then how many would I need for 0.05? and how did you work it out

A LEVEL-Arithmetic Series

If I pour 1650 ml and 1200 ml of juice into a 2.8 litre jug how much juice is left over

kenken puzzle

Given an array A of numbers of length n (indexed starting at 0), verify that the following pseu-docode program returns the index of the smallest element in the array. What is the LOOP invariant Hint: You should have more than one component to your loop invariant, and both minVal and minLoc should appear somewhere in the invariants. def findMin(A): n = length(A) minVal = A[0] minLoc = 0 for (i = 1, i

Worldwide, wind energy generating capacity, W, was 40,300 megawatts in 2003, and 121,188 megawatts in 2008. a) Use the values given to write W as an exponential function of t

story

2 3/4 - 1/2

1. -2 1/4
2. 1 1/4
3. 2 1/4
4. 3

I have homework to do math reflections. The question is What proceder(s) will find the sum a+b of two numbers where a and b represent any integer? I do not get it and i need help pronto!!!

i need help with math and i am working on arc lengths, central angles, and arc measures

A ship travelled 100 miles in 5 and a half hours. The ship travelled at a constant speed for the first 30 miles before increasing its speed by 5mph during the remainder of the journey. calculate the speed during the first 30 miles.

if a2+(1/a2)=5 and a3+(1/a3)=8 then a5+ (1/a5) =?

1) Using capital letters, show which letters of the alphabet have reflectional symmetry-or both.

2) In the pizza, why do you have to rotate it by 60 degrees for the same view?

on a treasure hunt, players are instructed to go 2km north, then 5km east, then 4km south, then 3km west, and finally 2km north. Where is the treasure relative to the starting point? (( The answer is 2km east of the starting point )) but I dont understand why or how to get that?

what is 4t =1=19

what is 1/5 of 20 and 30

im stuck again with the denominator and making the number the same please can you show me again example 3/4 +2/3=

Hello i need help on home work angles! x 😐

write 225 as a product of prime factors

maths puzzles

Daisy drove a Corolla and made the 1500 km trip to Mathville in 5 hours less than Kelly who took a Greyhound bus that made the same trip. If the bus traveled 25 km/h slower than Corolla, then find the speed of the bus and the number of hours it took the Corolla.

Find the range of the following data set: 8 4 13 35 63

Question: 0.05 kg of gas at 20 bar and 1100⁰C is expanded reversibly to 2 bar by the law PV¹˙³ = C in a closed system.

Determine the initial volume Determine the final volume Calculate the work done.

The diagram shows a light rod AB of length 4a rigidly joined at B to a light rod BC of length 2a so that the rods are perpendicular to each other and in the same vertical plane. The Centre O of AB is fixed and the rods can rotate freely about O in a vertical plane. A particle of mass 4m is attached at A and a particle of mass m is attached at C. The system rests in equilibrium with AB inclined at an acute angle θ to the vertical as shown. By taking moments about O, find the value of θ.

Baked Beans = Fibre So if B=1 then F=2 The number can only relate to 1 letter So F=2 means that A cannot =2 or 1. This is a secondary school first year problem.

He says that: 1+399954/452/9876/4598/23*76/43=1! HOW IS THAT POSSIBLE!

tomorow i have a exam and i need help finding a appropiate site to revise

find x:4+6+x+5+x+2x+5

need GCSE STUDY TIPS

My kid is in y3, This is what they want my kid to do (Make up five addition calculations for yourself and work them out using the written partitioning method. Use a combination of 2-digit and 3-digit numbers) and i dont know how to help them

theres 5 different scented candles, each pack has 3 candles.each candle has 5 possible scents. scents can be repeated. how many packs are possible? what is the probability that all 3 candles in a given pack would have the same scent? if a store receives 200 packs, how many packs would contain 3 of the same scent. of the 200 packs there were actually 6 packs each with 3 candles of the same scent. does this mean the computer was not randomly choosing the scents?

the environmental club sells sweatshirts. they sell 1200 shirts a year at ![20 each. they are planning to increase the price. a survey indicates that for every 2 increase in price, there will be a drop of 60 sales a year. what should the selling price be in order to maximize the revenue?

Bethany cooked a total amount of 3 kg and 530 g of rice from Monday to Wednesday. She cooked 4 kg 570 g from Thursday to Saturday. On average, how much rice did she cook per day?

Ally cooked a total amount of 3 kg and 530 gram of rice from Monday to Wednesday. She cooked 4 kg and 570 gram from Thursday to Saturday. On average, how much rice did she cook per day?

Write a system of equations to describe the situation below, solve using any method, and fill in the blanks.

At a scrapbooking party, guests brought a certain number of photographs to use, based on how many pages they will be assembling. Thi plans to assemble 7 small pages and 5 large pages and brought a total of 37 photographs to use. Katherine brought 19 photographs, which is enough to assemble 1 small page and 3 large pages. Assuming that the number of photographs on a page remains constant, how many photographs fit on a small page and a large page?

This question can be solved using The Singapore maths bar method

Kieron has 3 Cats

Each a different weight

The first and second cat weigh 9kh altogether The second and third cat weigh 10kg altogether The first and third cat weigh 13kg altogether

How much does each cat weigh?

using 4 different coins with a £1 being max make £19.65 using the same quainty of each coin?

here to I post a microsoft Excel sheet? Exercise 3 on Microsoft Excel: Review tabs on Microsoft excel sheet the data will give you an idea. Read tabs that reads ‘Property Tax’, Ex 3c Chart (Property Tax), Ex 3b Tbl 2 (Property Tax), Ex 3b more Tbl 3 (Property Tax). Write a memo 10 sentences long summarizing your findings AND RECOMMENDATIONS.

If x,y,z>0 prove: (x/(x+y))2+(y/(y+z))2+(z/(z+x))2>=3/4

If a,b,c are different from 0, a is different from c and (a2+b2)/(b2+c2)=a/c. Prove a2+b2+c2 cannot be a composite number

Your company is going to ship old calculus textbooks to be pulped and recycled. You hire a driver at a flat rate of 3 per gallon for fuel. Your truck gets 600/x miles per gallon when driven at a constant speed of x miles per hour (between 50 and 70 mph). What speed should you ask your driver to maintain (between 50 and 70 mph) to minimize your costs per mile driven?

I'm not sure how answers are marked in A level Mathematics exams (if it counts, I'm sitting for the CIE board) but when I am doing practice questions based on a book, sometimes my answer may differ by a few hundredths or tenths (usually the third significant figure). When this happens, I usually assume that my calculation is correct and that the difference simply happens because of a choice I use to use or not use the correct form, not the one rounded off to 3 s.f. Would my marks be affected by these differences in an exam and if they do, when do I know whether I should use the rounded off figure or the exact form?

For instance in the work I've recently done, the question comes in 2 parts, the first is that I need to find the area of the sector and the second is the area of the chord of said sector. What I did was subtract the area of triangle from my previous answer but my answer was off by 2 hundredth. I did the calculation again using the correct form of the sector, not the one rounded to 3 s.f. and got the answer written in the answer booklet.

Would my answer be considered correct?

solve : 4q² + 4q = 6 using two different methods

((x*x)/((0.12-x)(0.14-x)))

5/6:x::5/9:4/5

Have a go at some indicies questions: Starter: a)16⅗×27-1/3 b)3x√7÷3(5⅖) c)x⅕√x×7x4 d)3√c÷4c7 e)7x2√x÷4x-1(2√3+4x)

Nadeem - tutor

Solve the following Questions

sin theta = (under root 3 + 1) divided by 2 times under root 2 cos theta = (under root 3 - 1) divided by 2 times under root 2 Find the value of theta. Please look at the shared image.

In this question take

A particle of mass 0.5 kg is suspended from a fixed point O by a light elastic string of natural length 1.5 m and modulus of elasticity 12 N. The particle is released from rest at O and next comes to rest at the point A. When the particle is at the point A, the extension in the string is x

metres. Show, using energy considerations, that 8x2 -10x-15=0

How do I transform original data into exponential on a calculator?

using the base slope formula hoow do i find the slope of points (2,4) and (4,16) on the graph of f(x)=x2

(1-tan2(x))/(1+tan2(x))=cos2(x)-tan2(x)

Hi, I'm currently studying Mechanical engineering degree and need help on a worked example to understand how the final solutions was found. The topic is vibration due to rotating imbalance using: -Ky-Cy+Fm(y)= (M+m)y

Thanks

what are bearings?

for example what is the product of 8 and 7

what does semicolon e.g " : " means in math

what dose increase mean

what is 3^6/3^1 simplified with positive exponents?

How is it calculated

Dougal drove for half an hour and covered a distance of 18km. What was Dougals average speed?

What is the difference between -3 and 5

My teacher had told me in details about it, but I seem to find the concept of combinations and permutations difficult. I need some help.

Area of circles and squares

what is the smallest out of 1, 0.3, 0.07, 0.4, 0.317, 0.307

what is the sum of the interior angles of a polygon with 38 sides?

what is: 4x-2 6x-3 8x-4 -3x-4 -5x3 -2x-4 -7x4 -4x-5 -3x9 -5x-5 -16 divided by 2 -20 divided by 4 -30 divided by -5 -50 divided by -10 ?????????????????????

what is a figure

where a cd in seconds is 150t and t is the number of tracks, what is t=14

where d is the siatance traveled by an object moving at speed r in time t. find d if. r=52min/sec,t=

Which is bigger 5.1 or 5.04?

Which of these numbers is the odd one out 10%,1/10, 0.1

Why do bearings always have 3 digits

I don't understand how to set up and solve work rate problems, here's a sample problem

"Gina and Kayla start a business painting fences. They discover they can paint a fence in 40 minutes if they work together. Gina can paint the fence in 70 minutes if she works alone. How long would it take for Kayla to paint a fence by herself?"

write this number in standard form 23

HOW MANY ZIDS ARE THERE?HOW MANY ZODS?

30% of 50

30 children took part in a spelling test of 20 words here are there marks out of 20 tese are the numbers 12 8 15 10 7 9 12 18 10 6 5 16 17 15 9 20 17 11 9 10 8 9 13 12 7 17 7 19 10. What is the mode?

3.6devide by 3 with a pen

Would like to know the answer and how to do the sum

3+x over 3 = 10+4 over 4

Special Equations

50% of 240

4(x+2)

8d+11=35 in equations

Solve for x

How do you solve this?

a boat sets off for Plymouth at 09:30 & arrrives in France at 4pm. Its speed was 25m?hr. What distance did it cover?

A boy earns 23 marks out of 50 in a test. What percentage is this?

A box contains 150 apples, if 27 of them are removed how many are left?

A grocery store sells a mixture of peanuts and raisins for 1.25 pe

A company had a net profit of 8 million dollars in 1991 and 11.2 million dollars in 1999.

What was the average percentage rate of growth for an exponential model for the profit?

Give your answer as a percent (without the percent sign), with two decimal digits of precision.

A farmer has 76 feet of fencing and wants to build a rectangular pen for his chickens. What should the dimensions of the pen be if h wants it to have the greatest area possible?

a man is standing on a flight of stairs between 2 floors. the man is 170cm. how high are the stairs?

How to solve this??? A man has 12 iron posts as well as a 4 feet wide iron gate available for the purpose of fencing a semi-circular plot of land. It is understood that the gate needs to be supported by two of the 12 iron posts on either side of the gate. It is also suggested that the remaining posts be spaced equally away from each other. Diameter of plot of land =10m

1. Deduce where the gate should be placed along the semi-circular pot of land. How to find out the distance between each of the posts.

I know for sure this is an A.P.

a quater share of a fifth of 10% of £8000 is £40 £80 £400 £36

can you help me write a paragraph to help students understand what sensible borrowing is?

A practical or theoretical approach to Mathematics?

A rectangular box is to have a square base and a volume of 70 ft3. The material for the base costs 4

a ship is 18 miles west and 20 miles south of a harbor. What bearing should the captain sec to sail directly to the harbor?

Altogether there are 320 seats on both levels. what is the equation that can be used to find the number of seats in level 2?

I need help to understand Bearings.

Plz give me help with a link or written

I have a Level Up Homework Book Level 4-6

I need help with question 6

Thanks

Do not understand any of it .... Do you still follow the rules? My questions are really hard

-51/2 + 11/3 - 5/6

I have 73 teacakes. Each box holds 8 cakes. How many boxes do I need?

how do i tackle a box plot question?

by how many hundredths is 0.82 less than 17/20

i have to do the bus stop methord for school which is changing fractions to decimals if anyone knows this method please help ps homework due tomorow need answers now ! thanks 🙂

by how many hundreds is 0.82 less than 17/20

by how many hundredths is 0.82 less than 17/20?

Do you know how to put this answer in fraction form Ayo's car uses up 29 litres of petrol in making petrol does he use up for each journey? Thanks 🙂

Calculating lengths x and y in similar triangles

Ayo's car uses up 29 litres of petrol in making petrol in making 12 equal journeys to and from his work. how much petrol does he use up for each journey?

thanks 🙂