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maths
Page 9
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The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The
1 answer
asked by
k
1,232 views
6y=9-3x rearrange for x=
Change 6y = 9 - 3x to: 3x = -6y + 9, then solve for x by dividing both sides by 3 to get: x = -2y + 3
1 answer
asked by
forest
425 views
A town planner is using a map of a town centre with a scale of 1: 1250
A path in the town is 8cm long on the map. How long is the
1 answer
asked by
k
427 views
The ‘body mass index’ is used to find the body weight that is appropriate for a person’s height. It is calculated using
1 answer
asked by
katie
529 views
A car hire company makes the following charges:
•A one-off charge of £20: •A charge of £25 for each day that the car is
1 answer
asked by
kat
527 views
how do i Rearrange the formula
Y = 5X + 7 so that X is the subject. and i need to show my method carefully. subtract seven from
3 answers
asked by
m
1,130 views
A shop reduces all its prices by 30% in a closing down scale. What is the original price of a television now priced at £175?
can
1 answer
asked by
sarah
429 views
how do i slove this equation??
x ^2 – x = 0 First you can factor it. x(x-1) = 0 In order for their product to = 0, one of the
1 answer
asked by
sarah
788 views
The ‘body mass index’ is used to find the body weight that is appropriate for a person’s height. It is calculated using
1 answer
asked by
sarah
490 views
would it be number 6?
The head of an industrial machine moves in a straight line horizontally backwards and forwards from a
1 answer
asked by
katie
429 views
A town planner is using a map of a town centre with a scale of 1 : 1250
The town planner wants to estimate the area of a plot of
1 answer
asked by
katie
467 views
Compass bearings of a carin are taken from two points A and B, 400 m apart, along a strsight north-south path, A being due north
1 answer
asked by
claire philips
355 views
which three statements are true?
a) if x= -10^4 then log 10 = -4 b)if x= 2^8 then log 2x = 8 c) log2 2= 4 d) if x= 3 then log10
1 answer
asked by
claire philips
476 views
The ‘body mass index’ is used to find the body weight that is appropriate for a person’s height. It is calculated using
1 answer
asked by
katie
567 views
how do i solve the following equation?
4 - x = 2 - (3 - 2x) remove ( ) by distributing - sign 4-x=2-3+2x then add -4 to both
1 answer
asked by
sarah
551 views
Sixty people were asked how many films they had seen in the past year. The results are shown in table 1.
Table 1: number of films
1 answer
asked by
roger
501 views
Choose the two true statements from the following.
a)if the AEI increases by 30% a year and the RPI increases by 11.0% in the
1 answer
asked by
sarah
490 views
You are asked to write a program for the course calculator to help a fellow student practise changing the subject of a formula.
1 answer
asked by
kat
584 views
which solution is the correct for this equation
4x^3 - 3x = 15 -1.8, -1.7, -1.6, -1.5, 1.5, 1.6, 1.7, 1.8 ?? What is your
1 answer
asked by
kat
625 views
What is the period of this function? - Maths?
y = 5+3sin (pie t divided by 3 + pie divided 2) by definition the period is 2pi/k
1 answer
asked by
claudia
463 views
Choose the 2 true statements?
A) using Naismith's rule to plan a walk would give different times to walk up a hill as down it, on
1 answer
asked by
claudia
519 views
f(x)=x^3+px^2+qx+6
this formula can also be written in "factorised form" that is, f(x)=a(x+b)(x+c)(x+d) can someone please teach
1 answer
asked by
Emma
540 views
i have to make y the subject of this equation:
4t + 7y - 9 = 0 wod it be y = 4t + 9/7 ?? You need to do the same processes to
1 answer
asked by
kat
383 views
find the gradient and y ntercept of the line with equation: y = 9 - 4x
choose the one option which gives the gradient and one
1 answer
asked by
sarah
476 views
for this simultaneous equations:
x + 2y = 1, -x + 5y = 12. would the two solutions be x = -3 and y = 2 sorry i mean -x + 5y = 13
1 answer
asked by
sarah
417 views
The data in table below gives marks for an exam of a particular tutors students in 2005 and 2006.
Year students marks on the exam
1 answer
asked by
angel
423 views
does this quadratic equation:
3x^2 - 2x - 9 = 0 have two solutions?? or none? and if there are solutions will it be either 1.431
1 answer
asked by
kat
409 views
How to calculate the mean number of threatened fishes, where total number of fishes is 29300 and number of threatened fishes is
1 answer
asked by
Ellie
690 views
the function
y = 5 + 3 sin (pie t /3 + pie /2) choose one option which gives the value of the funtion when t = 3. choose the
1 answer
asked by
kat
492 views
Choose three options which are true:
a) an angle of 150 degrees is equivalent to 2pie/3 radians. b) Cos 0 = cos (0 – pie/2) for
1 answer
asked by
sarah
1,082 views
please help im quite stuck with this question
a boat sails in a straight line, its position at time t is (-t+600,2t-300). a man
2 answers
asked by
braidy
571 views
the function
y = 5 + 3 sin (pie t /3 + pie /2) choose one option which gives the value of the funtion when t = 3. choose the
1 answer
asked by
kat
856 views
hi, i'm having trouble with this question:
The cost of running a train at a constant speed of v km/h is C=50+v^2/1000
1 answer
asked by
elle
408 views
how do i find out the the equation of the line of symmetry for
f(x)=ax^2+bx+c ? please explain it do me thanks! The line of
3 answers
asked by
Emma
2,349 views
please help!!
i have obtained the equation of the regression line for a previous question which is: y=62.4+0.663x i had to use
1 answer
asked by
Anonymous
480 views
Can someone please help me with solving this equation (I don't know how to do it with the fractions)
1/3 x1^-2/3 . x2^2/3
2 answers
asked by
needhelpplease
540 views
find the roots of the equation X(square)+7x equal to 0.(b)write down the equation whose roots are -2 and 5.
I will be happy to
1 answer
asked by
nikita
1,109 views
In a figure angle a =90, AB=16cm and tan angle C=4/5.find(a)AC ,(b)BC(C) ANGLE C(D)DISTANCE FROM A TO BC.
1 answer
asked by
SWETA
353 views
from a batch of 10 eggs 3 are rotten.2 eggs are selected in succession.Find the probability that(a)both are rotten (b)only 1 is
1 answer
asked by
CELINA
953 views
number of films seen by a group of people during the past year
No of films seen 0 1 2 3 4 5 6 7 8 No of people 23 12 9 6 3 4 2 0
1 answer
asked by
S
364 views
for this equation x^2 - x = 0
would x = 1 i think this is the answer but i need to write it out step by step in how i worked the
1 answer
asked by
sarah
314 views
number of films seen by a group of people during the past year
No of films seen 0 1 2 3 4 5 6 7 8 No of people 23 12 9 6 3 4 2 0
3 answers
asked by
sarah
748 views
Choose three options which are true:
a) an angle of 150 degrees is equivalent to 2pie/3 radians. b) Cos 0 = cos (0 – pie/2) for
2 answers
asked by
kat
585 views
What would the equation be of a straight line that passes through the points (1,1) and (3,3) ??
write the equation for the line:
1 answer
asked by
kat
509 views
evaluate;1 x 10 negative 5-(2x10 negative -6)
Get both numbers to the same power, and then subtract.
1 answer
asked by
Anonymous
316 views
evaluate; square root of 0.25 x 10 neg.6
I will be happy to critique your thinking. Is this a test question? I will be happy to
1 answer
asked by
Anonymous
383 views
write down equations with integral coefficients having roots;(1/2,4).
(x-1/2)(x-4)=0 multiply it out.
1 answer
asked by
Anna
295 views
solve this equation;5t(6 times 10 neg.3)=(6 times10neg -2)
does it look like this: t =variable 5t(6 X 10 - 3) = 6 X 10 - 2 are
1 answer
asked by
celine
364 views
five bales of hay are weighted two at a time in all possible combinations. the weights, in kilogrames, are:
110,12,113,114,115,11
2 answers
asked by
Emma
741 views
how do i factorise this?:
p^2+2p+1-t^2 thx. p^2 + 2p + 1 - t^2 = (p+1)^2 - t^2 This is the difference of two squares, so it can
1 answer
asked by
Emma
324 views
A man invested Rs30000 in two types of bonds.On one he earns 5% and on the other he gets 75.If his total earnings are
2 answers
asked by
meera
506 views
how do i solve this equation?
21(X-(1/7))^2= 3/7 thx Divide both sides by 21 Take the square root of both sides. Rewrite it as x
1 answer
asked by
Emma
377 views
how do i solve this equation?
2/(x+1)=1/(x-1) - (1/(2x-1)) thx Get a common denominator (x+1)(x-1)(2x-1) then, each term, multipy
1 answer
asked by
Emma
390 views
Set it up this way:
Let the number of students be x let the number of rows be y then the number of students per row is x/y This
2 answers
asked by
Reiny
542 views
hey, i would really appreciate some help solving for x when:
sin2x=cosx Use the identity sin 2A = 2sinAcosA so: sin 2x = cos x
2 answers
asked by
elle
603 views
eight points lie on the circumference of a circle. one of them is labelled P. chords join some or all of the pairs of these
2 answers
asked by
Jarin
723 views
Let's denote the three numbers by a1, a2, and a3. Consider the third degree polynomial:
p(x) = (1 + a1 x)(1 + a2 x)(1 + a3 x)
2 answers
asked by
Count Iblis
607 views
Class 5G is having a pizza party. Mrs Baker asked all the children to bring in 50c for their share of the pizza.The next day all
4 answers
asked by
JaredN
1,317 views
how many times does minute hand rotate in one day?
There are 60 minutes in an hour and 24 hours per day. With this information,
1 answer
asked by
abhishek
433 views
Veronica bounced a ball from the roof of the school which was 16m high. The first bounce reached up to 8m, the next bounce was
1 answer
asked by
JaredN
421 views
I have 2 coins, how much money might I have?
How many different amounts might I have? List the possible combinations of 1, 5, 10,
1 answer
asked by
JaredN
462 views
Maria types one thousand whole numbers beginning at 1 and finishing at 1000. How many times does she need to hit the 3 key?
Figur
1 answer
asked by
JaredN2
388 views
A small primary school has a total enrolment of 50 students. A total of 20 of these play hockey, 18 play netball and 10 play
2 answers
asked by
JaredN3
560 views
In a netball competition, there are 9 teams. If each team plays each other twice, what is the total number of games played?
The
1 answer
asked by
JaredN4
449 views
can some one help me on how i work these qustions out..i need to simplify and write out the full solutions.
2x + 4 / 2 and 2x^2 /
1 answer
asked by
kat
498 views
how wod i solve the following two eqautions? either exactly or to 3 significant
a)2^x = 5 b)3^x+1 = 7 i know a) is 2.32 and b) is
1 answer
asked by
k
429 views
Scenario:
There is a bus with 7 girls inside, Each girl has 7 bags, Inside each bag, there are 7 Big cats, Each Big cat has 7
3 answers
asked by
mehek
625 views
the police officer also gathered data on the speedsx, in kilometers per hour (km/h) of some cars as they drove down the hill
1 answer
asked by
kate
859 views
cars driven on the road must have a current warrant of fitness and be registered. A recent newspaper article contained the
1 answer
asked by
kate
452 views
Mr.Wang spent $40 for 5 picture cards, 2 note book and a vase. The cost of 1 picture card and the vase was $16. The cost of 1
1 answer
asked by
Danial
356 views
PLS HELP!!!!
Some children were sharing oranges. If each child took 3 oranges, there would be 2 oranges left over. But if each
2 answers
asked by
Ben
874 views
Mr. George has some children. Each of his sons has the same number of brothers and sisters. Each of his daughters has twice as
3 answers
asked by
vickel
454 views
please can some one help me..?
Part a - O is the centre of the circle, and P , Q are points on the circumference of the circle,
2 answers
asked by
kelly
550 views
These questions concern the integers 84, 126, 168 and 294.
1)Choose the option that is the lowest common multiple of the four
1 answer
asked by
z
427 views
How far does a train travel going at 20mph for 45 seconds?
And har far will it travel at 13mph for 58 seconds? Thanks
3 answers
asked by
grant
349 views
Im confused can any1 help me on this question ?? or try and put me on the right track?
(a) A circle has radius 2cm (in that
2 answers
asked by
hi
625 views
A Fund Manager is going to invest $10,000,000. He is interested in CL3 Ltd and values CL3
Ltd using the dividend discount model
1 answer
asked by
Wong
415 views
On 1 Jan 2007, Peter celebrates his 30 year old birthday. As a birth commitment, Peter joins a 15 year-contribution Annuity
2 answers
asked by
Ming
566 views
Find the equation of each line
a) with an x intercept the same as 2x-5y=10 and parallel to x=4 b) with an x-intercept of -4 and a
2 answers
asked by
Audrey
531 views
Hi again!
Today in maths we were looking at ratios and probabilities, then we got this for homework and not only do I have no
3 answers
asked by
Audrey
397 views
Hi again!
Today in maths we were looking at ratios and probabilities, then we got this for homework and not only do I have no
4 answers
asked by
Audrey
383 views
sorry, I know I already asked this, but I called some of my friends and it seems I copied down the homework wrong.
The question
5 answers
asked by
Audrey
528 views
The number of arrangements of five letters from the word 'magnetic' that contain the word net is:
a)60 b)100 c)360 d)630 e)720
9 answers
asked by
Audrey
1,663 views
The common ratio r of a geometric sequence satisfies the quadratic equation 2r squared - 3r -2 = 0. If the sum to infinity of
3 answers
asked by
jen
1,156 views
A clothing firm determines that in order to sell x suits, the price per suit must be p = 150 - 0.5x. It also determines that the
2 answers
asked by
shila
1,325 views
rearrange the following equation to find x in terms of y and t
y(y-x)=3t(3t+x)
1 answer
asked by
walter
317 views
solve the following equation for x
(x+1/x) + (6/2x-3)=0
1 answer
asked by
walter
280 views
Simply by expanding any brackets and collecting like terms
5x - 2 - 2x + 3 is this 5x - 2x = 3x 2 + 3 = 5 therefore 3x - 5 if
3 answers
asked by
leo
491 views
Keshawn and Samantha are in a science class with 18 other students. The teacher randomly divides the class into 10 pairs of
4 answers
asked by
Audrey
712 views
I have an illustration in my book of a quadrilateral inside a circle. The quadrilateral is ABCD; AB is a vertical line and then
2 answers
asked by
Audrey
938 views
factorise the following equation
680x3-1407x2-614x+285 where x2 x3 mean x to the power of
3 answers
asked by
walter
487 views
The population of a country is 10 million in 1997 and increasing at a rate of 0.6 million per year. The average annual income of
3 answers
asked by
anshu
536 views
Waht is 12 to the power 12 and a half
1 answer
asked by
Thamiline
353 views
The diagram shows part of a regular polygon. work out how many sides the polygon has. (it is 156 degrees).
2 answers
asked by
corinna
1,242 views
emma draws this diagram. She says it shows part of a regular polygon. Explain how you can tell that Emma must have made a
3 answers
asked by
corinna
440 views
Am I right?
1) 22x^2 + 16x + 64 < 0 For this problem I got: -32 > x < 24 * 35 minutes ago * - 3 days left to answer.
1 answer
asked by
viku
389 views
consider the sequence given by U1=-0.3 Un+1=Un+0.7 i)state what type of sequence this is. ii)write down the first 4 terms of the
1 answer
asked by
cecilia
493 views
A passenger plane and a jest leave at the same time from the same airport, traveling in opposite directions. The jet travels at
2 answers
asked by
gf
692 views
cancel down or write as mixed number if appropriate
3 * 5 over 9
2 answers
asked by
ki
469 views
help me with quadratic equation plz give example
3 answers
asked by
lily
383 views
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