Top answers

Solve the simultaneous equations..... 3x - y + 3 = 11 & 2x^2 + y^2 + 3 = 102 where X and Y are both positive integers.

Here we have two equations with two unknowns, the method we use to solve this is substitution. First, find one of the unknowns in terms of the other by rearranging the first equation to arrive at y = 3x - 8,...
RW
Answered by Reuben W. • Maths tutor
3979 Views

What does the Blake mouton grid represent?

This diagram refers to the management styles, in accordance to the concern for task compared to concern for people. Therefore this refers to whether the manager is task orientated, if the work is more import...
KD
2219 Views

Solve 4(x-5)=18

There are 2 ways to solve this equation:Method 1:Expand the brackets by multiplying everything inside the brackets by 4 to make 4x-20=18Then +20 to both sides making 4x=38Then divide by 4 to find x, therefor...
JS
Answered by Jessica S. • Maths tutor
20833 Views

write (x+2)(x+3)(x+5) in the form ax^3+bx^2+cx+d

First take (x+2)(x+3) and expand to get x 2 +3x+2x+6, which can be simplified to equal x 2 +5x+6.Then mutiple x 2 +5x+6 by (x+5). This will give you x 3 +5x 2 +5x 2 +25x+6x+30. Simplify this to equal x 3 +10...
CH
Answered by Cora H. • Maths tutor
3985 Views

How do you know whether a compound is ionic or covalent and how can you find the conductivity rate for both heat and electricity?

As a general rule metals bind to non-metals ionically, and non-metals to non-metals bind covalently. For example NH3 is covalent, vs NaCl is ionic. Conductivity rates for electricity are in general dependent...
RS
Answered by Roshan S. • Chemistry tutor
3152 Views