Top answers

What are arguments in favour of protectionist policies?

Although protectionist policies are generall considered to have more negative effects than positive ones, there are certain instances in which they can be very beneficial. One of those instances is the infan...
AA
Answered by Alex A. • Economics tutor
6584 Views

Solve the following simultaneous equations: 3a + 2b = 36 equation ( 1), and 5a + 4b = 64 equation (2)

This question can be answered by the elimination method, substitution method or graphically. I find the elimination method easiest, especially when you can see that the coefficient of a variable (in this cas...
AG
Answered by Alejandro G. • Maths tutor
6489 Views

There are 30 kg of potatoes in a wheelbarrow. A farmer adds some carrots into the wheelbarrow. The total weight of the wheelbarrow now is 110 pounds. What weight of carrots did the farmer put into the wheelbarrow? 1 kg = 2.2 pounds

First of all, you want to get all your data in the same units, so either in pounds or kg. Here, as you are told that 1kg = 2.2 pounds, it seems easier to convert the amount of potatoes from 30kg into pounds,...
AG
Answered by Alejandro G. • Maths tutor
5598 Views

Integrate, by parts, y=xln(x),

First, we need to separate the RHS as components of U and V. Using the LATE (logarithms, algebra, trigonometry, exponentials) technique, we see that logarithms have priority to algebra hence U = lnx and dV/d...
MS
Answered by Makhdoom S. • Maths tutor
3790 Views

Describe the structures of proteins

Primary structure - a sequence of amino acids in a polypeptide chain. They are joined together by peptide bonds. The sequence of amino acids determines the rest of the proteins structures. Secondary structur...
PM
Answered by Phoebe M. • Biology tutor
4340 Views