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Solve the equation 5(2c -3) = 19

Firstly I would try to learn about the students abilities and maybe do an easier linear equations (without brackets) to ensure they have a basic idea how to solve these types of equations. For this questions...
JG
Answered by Jasmine G. • Maths tutor
4007 Views

If photons are little particles emitted by atoms, where were they before they got emitted?

Eisntein showed that in his theory of relativity that energy and mass were no longer conserved, as they are in Newton's theory. This completely changes how we see particles. They are no longer fundamental bu...
US
Answered by Uther S. • Physics tutor
2491 Views

Why would an increase in demand for a good cause an increase in price for a good?

Imagine that there are 10 apples to be sold at $1 each and that there are 10 people wanting to buy (demanding) an apple each. Now imagine there is an apple health-craze in this country and so now there are 3...
AK
Answered by Anna K. • Economics tutor
3240 Views

How do you prove the 1^2 +2^2+.....+n^2 = n/6 (n+1) (2n+1) by induction?

There are three simple steps to prove anything by induction. Step 1: When n=1 1 2 =1 then: 1/6 x 1x (1+1) x (2+1) =1x2x3/6 =1 Therefore it is true for n=1 Step 2: Assume it is true for n=k so, 1 2 + 2 2 +......
VI
Answered by Vaisaalii I. • Maths tutor
5135 Views

Is "ser" always used to express something permanent and "estar" for something temporary?

This is a common misconception when learning to distinguish ser and estar. There are many rules and exceptions regarding this. Here's an example: "Mi abuela es mayor" vs "Mi abuela está mayor&...
EJ
Answered by Erlei J. • Spanish tutor
3439 Views