Top answers

Solve this pair of simultaneous equations to find x and y

(1) 2x - 5y = 11(2) 3x + 2y = 7-----------------------Multiply equation (1) by 3 & Multiply equation (2) by 2 to give equal values for x:(3) 6x - 15y = 33(4) 6x + 4y = 14-----------------------Take equat...
JB
Answered by James B. • Maths tutor
4989 Views

Find the equation of the straight line which passes through the point (0, 3) and is perpendicular to the straight line with equation y = 2x.

We know that a straight line has a general formula: y = mx+c, where m is the gradient of the line and c is the y-intercept; so, we are looking to find m and c. The line passes through the point (0,3) so x=0 ...
FM
Answered by Flavian M. • Maths tutor
22114 Views

Integrate (x^3 - x^2 - 5x + 7) with respect to x.

Remember to integrate you +1 to the power and divide by the new power:(x 3+1 /3+1) - (x 2+1 /2+1) - 5(x 1+1 /1+1) + 7(x 0+1 /0+1) + CDONT FORGET YOUR CONSTANTx 4 /4 - x 3 /3 - 5x 2 /2 + 7x + C
NL
Answered by Nathan L. • Maths tutor
5782 Views

How should I aproach a connected rates of change question.

You should start by identifying which parts have a fixed rate of change e.g. water is being poured in at 50 cm^3/s. You should then identify what is changing in relation to this e.g the height of fluid in a ...
KC
Answered by Kyle C. • Maths tutor
8012 Views

What are the parameters of the Poisson distribution?

In a Poisson Distribution, there exists only one parameter, μ, the average number of successes in a given time interval. The mean and variance of the distribution are also equal to μ.
AD
Answered by Anuradha D. • Maths tutor
27997 Views