Top answers

Solve 3x^2+7x-13=7 to find x.

Firstly, you need to get the equation to equal zero, so that you can use the quadratic formula to solve. Therefore you subtract 7 from both sides, meaning the equation becomes: 3x^2+7x-20=0. Recall the quadr...
EM
Answered by Ellie M. • Maths tutor
4313 Views

How do you know whether to use « er » or « é/ée/és/ées » at the end of a verb ?

This is a common mistake even for native French speakers ! The difference is that « er » is the infinitive form of some verbs whereas verbs ending with -é (for masculine, or -ée for feminine, -és for masculi...
JM
Answered by Julien M. • French tutor
15630 Views

In DNA, what bonds form between the nitrogenous bases

Hydrogen bonds.
RS
Answered by Rochelle S. • Biology tutor
3204 Views

Solve (6x-2)/4 - (3x+3)/3 = (1-x)/3. (4 marks)

(6x-2)/4 - (3x+3)/3 = (1-x)/3 multiply both sides of the equation by 12=lowest common multiple of 4 and 3 3(6x-2) - 4(3x+3) = 4(1-x) expand brackets 18x - 6 -12x - 12 = 4 - 4x simplify 6x - 18 = 4 - 4x10x = ...
EL
Answered by Eleanor L. • Maths tutor
3626 Views

Give 2 reasons why a river might deposit its' load (2 marks)

1- Loss of river velocity, causing it to deposit its load due to a loss of energy.2- The river meets a more shallow area, meaning the friction causes the river to deposit its load due to a loss of energy.
SM
Answered by Sophie M. • Geography tutor
22765 Views