write this number in standard form 23

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

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?

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

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).

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.

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 !!

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

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

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

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.

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?

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?

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?

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

for example what is the product of 8 and 7

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

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

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 a figure

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

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

Special Equations

8d+11=35 in equations