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Define electric current

Electric current is a measure of the rate of flow of charges. What this means is how many charges are flowing in a circuit in a certain time period. Mathematically this is expressed as I=Q/t where I is for c...
LM
Answered by Liam M. • Physics tutor
5850 Views

solve to 2 decimal places; (2x+3/(x-4)) - 2x-8/(2x+1) = 1

the key to this question is to remove all the unknown denominators. to do this first move the negative fraction to the other side of the equation to get 2x+3/(x-4)=1 + 2x-8/(2x+1). then we need to combine th...
DM
Answered by Dan M. • Maths tutor
4214 Views

When do you use the subjunctive in Spanish?

Firstly it should be noted that the subjunctive is a mood and not a tense, which means that use of the subjunctive should reflect how the speaker feels about what they're saying. The subjunctive is used when...
HD
Answered by Henry D. • Spanish tutor
3609 Views

There are n sweets in a bag. 6 are Orange, the rest are Yellow. Hannah takes a sweet out of the bag, and eats it, she does this twice. The Probability of Hannah eating two orange sweets is 1/3. Show that n^2 - n - 90 =0, and solve to find the value of n.

The first thing to recognise about this probability question, is the probability of eating an orange sweet from the bag. When she first puts her hand in the bag, there are a total of n sweets in the bag, and...
DD
Answered by Dylan D. • Maths tutor
10875 Views

Simplify (2^2)^3

The laws of powers explain that it is possible to add powers together when a power is raised against another. Therefore the answer is as follows 2^(2+3) = 2^5
CO
Answered by Curtis O. • Maths tutor
4047 Views