Search our library of homework questions

Top answers

All subjects

All levels

What does: "Marta tiene el pelo moreno" mean?

Marta has brunette hair.

Answered by Clara M. • Spanish tutor

2125 Views

Find the first derivative of the line equation y=x^3 + 4

dy/dx = 3x^2

Answered by Harry F. • Maths tutor

3465 Views

What is meant by the independent and dependent variables? Please give one example of each.

Independent variable: the one that you change.

Dependent variable: the one that you measure.

For example, a scientist wants to find out whether a diet including oats makes a horse run fast...

Answered by Lauren P. • Biology tutor

19006 Views

When a force is applied to a spring, the spring extends by 12cm. The spring has a spring constant of 25 N/m. Calculate the force applied to the string in N.

The equation needed in this scenario is: Force Applied (F) = Spring Constant (k) x Extension (x). This will most likely be given to the student on the data sheet for most exam boards. Firstly, you must co...

Answered by Matthew G. • Physics tutor

12830 Views

Integrate x((x^2)+2) dx

The first step is to multiply out the brackets so the function is in a form that can be integrated. X x X² = X³ then X x 2 is simply 2X. So we are left with X³ + 2X. Both ...

Answered by Benjamin H. • Maths tutor

3163 Views