Top answers

Solve the simultaneous equations 8x+2y=34 and 4x+2y=18

1.Simplify the two equations: 4x+y=17and 2x+y=9. 2. Rearrange one of the equations to make y=: y=9-2x. 3.Substitute into other equation:4x+9-2x=17. 4. Simplify:2x=8 x=4. 5.Substitute back into either of the ...
LM
Answered by Lara M. • Maths tutor
4205 Views

How does DNA replication take place?

DNA replication takes place by semi-conservative replication (i.e. only half of the strand in each DNA molecule are from the original DNA molecule). First, the enzyme DNA helices is required to break the hyd...
LH
Answered by Laura H. • Biology tutor
4351 Views

Why is it incorrect to say 'in das Haus' for 'in the house'?

In German, most prepositions are followed by a noun in a specific case. For the group of prepositions mit, nach, von, zu, aus, bei, seit, gegenüber, außer, the noun that follows takes the dative case. For ex...
LH
Answered by Laura H. • German tutor
5541 Views

Why might the Bank of England raise the bank rate if inflation rises above 2%?

The Bank of England (BoE) has a target for inflation of 2.0%. If inflation rises above 2% the BoE will therefore try and decrease inflation. Increasing the bank rate leads commercial banks to (usually) incre...
SF
Answered by Samuel F. • Economics tutor
2185 Views

Solve the quadratic: 3x^2+4x = 20 to find x.

Quadratic formula: where ax^2+bx+c =0, x = (-b±√(b^2-4ac))/2a.Rearrange the formula in the question to get 3x^2+4x-20 = 0.From the quadratic in the question we can see that a = 3, b = 4, c = -20.Therefore x ...
SF
Answered by Samuel F. • Maths tutor
6415 Views