2,563 Answered Questions for the topic Maths

Maths

01/09/18

2×3×11=7ens-□ones
2×3×11=7tens-□ones
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01/09/18

If you know all 16 cofactors of a 4 by 4 invertible matrix A.
If you know all 16 cofactors of a 4 by 4 invertible matrix A, how would you find A? 
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Maths Answer Key

01/07/18

Five identical industrial water pumps working at full capacity can drain 600,000 litres of water in seven hours.
Five identical industrial water pumps working at full capacity can drain 600,000 litres of water in seven hours. What will be the least amount of pipes needed for 450,000 litres water to be drained... more
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Maths

01/07/18

functions- higher maths
f(x)= 1/X2-1 g(x) = 3x-1 do G(F(X)) can anyone explain how the Answer is 4-x2/x2-1
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Maths

01/07/18

trig- higher maths
tan(angle = 2/5 the hypotenuse is root 29  find cos2angle  can someone help I am stuck on this
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Maths

01/06/18

Given x2+bx+c=0 let d be positive difference in the roots if b c d form increasing sequence of consecutive integers then sum b+c+d is
Given x2+bx+c=0 let d be the positive difference in the roots if b c and  d form an increasing sequence of consecutive integers then sum of b+c+d=
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Maths

01/05/18

QUESTION ABOUT STACKS OF PAPER
Here are two piles of the same type of paper. Each sheet of paper is 71000cm thick. The taller pile is 1012cm high. height of taller pile : height of shorter pile = 3 : 2 Work out the number of... more
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Maths

01/04/18

Hi I have amathsvquestion please
stion 230 out of 4 pointsA survey into non-attendance at a hospital outpatients clinic over one month revealed the following reasons:Reason NumberProblem solved 28Forgot appointment 22Poor bus... more
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Maths Engineering

01/03/18

How do you know when to use an augmented matrix?
Bit confused please can someone clarify. 
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Maths Engineering

01/03/18

When should you use Gauss-Jordan method to find inverse? Does the determinant only tell you whether there is an inverse?
Mathematical engineering. I don't understand lol.
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Maths

12/31/17

Linear equations
A rod WZ is cut into 3 parts, WX, XY, and YZ respectively. If WY:YZ=2:1, WX:XZ=2:3, and XY=8 cm, find the length of the rod.
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Maths

12/30/17

Simultaneous Equations
Andrewe, Melinda, and Ben had $10, $12,$15 respectively. Andrew brought 8 apples and 5 oranges, Melinda bought 6 apples and 10 oranges and Ben bought 12 apples and 20 oranges. Let the cost of an... more
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Maths

12/29/17

Linear and simultaneous equations
A rectangular container half filled with water has the dimensions that are 6 cm long, 5 cm wide, and 16 cm high.   A) When 16 metall balls each of volume x cm cubed and 8 metal cubes each of... more
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Maths

12/29/17

Linear and simultaneous equations
Draw the graph of y=2x-5 for -3 less than or equal to Xmas less than or equal to 5. Also, draw the graphs of the following pairs of simultaneous equations on the same axes for -4 less than or equal... more
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12/28/17

The equations of the diagonals of the square formed by the pair of straight lines 3x^2 + 8xy - 3y^2 =0 and 3x^2 + 8xy - 3y^2 + 2x - 4y - 1= 0 are
Options: 1) x=2y,4x + 2y + 1=0 2) 2x + y =0, 2x = 4y + 1 3) x = 2y, 2x = 4y + 1 4) 2x + y =0, 4x + 2y + 1= 0
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12/25/17

Find the point of intersection of 4x - 3y - 7 = 0 2x + 3y + 8 = 0 8x + 3y + 9 = 0
The three lines are concurrent and the answer is supposed to be (-1/6,-23/9).
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Maths Logs

12/24/17

sin theta tan^2 theta (2sin theta + 3) + tan^2 theta = 0
logs edexcel c2 iygb paper z question 6
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Maths

12/23/17

discriminant higher maths
question: show that the roots of the equation X2+PX-1=0are always real. I used the discriminant. a=1 b=p c=-1 p2 - 4*1*-1 P2+4=0 p= -4 P=√4 p=2 am  right because I don't have the answers
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Maths Equation

12/21/17

im stuck on this question. solvethis equation: 3x= root5(3x+2) giving your amswer in the form a+b ROOT5
i would be very grateful for any help please and thank you
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12/21/17

R={(x,y):y is divisible by x}
Determine whether each of the following relatins are reflexive, symmetric or transitive
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Maths

12/19/17

How do u find the distance between two parallel lines on a trapezium
Its a hard question that I can't answer  
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Maths

12/16/17

How to prove that if a number x can be written as x=6k+5, it can also be written as x=3j+2?
 I am really stuck. Please help me with this one.
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12/14/17

If m = k/5 what would be 4K in terms of m
How would u solve?   options are 1. 4k=3m/4                  2. 4k=4m/3                  3. 4k=12m/5                  4. 4k=5m/12
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Maths Percentages

12/12/17

if girl was getting 67/100 and boy got 48/100 how much better did the girl do in percentage
 Maths question for sociology essay 
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Maths

12/10/17

find the equation of a circle center at (-3,1)and tangent to a circle (x-1)^2+(y+2)^2=1.if the tangency Is:
Both the two circles are tangent to each other .
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