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A plane travels at 213 miles per hour. Work out an estimate for how long, in seconds, the plane takes to travel one mile.

213 miles/hour speed = distance/time round 213 to 200 as only an estimate; s=200/1 hour = 200/3600 seconds (then divide by 200 to get time for 1 mile)s = 1/18 at this speed, the plane travels 1 mile per 18 s...
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Answered by Owen W. • Maths tutor
14756 Views

A right angled triangle has sides a = 3 cm and b = 5 cm, what is the length of side c?

a^2+b^2=c^2Rearrange so that c = sqrt(a^2+b^2) = 5.83 cm
SP
Answered by Samuel P. • Maths tutor
3326 Views

When would I use the imperfect tense instead of the preterite tense - this really confuses me?

Don't worry - this is very simple and a common question! The imperfect tense is used for 3 reasons. 1) Descriptions or states in the past e.g. llevaba un pantalón azul/ e.g tenía calor. 2) Actions in the pas...
DR
Answered by David R. • Spanish tutor
1948 Views

Explain the effect on the Pound if the MPC decides to increase the base rate of interest.

The base rate of interest is the interest rate set by the Bank of Englands monetary policy committee (MPC) in order to stimulate the economy in the way the government sets out . The base rate of interest bei...
JM
Answered by Jasper M. • Economics tutor
2226 Views

Factorise 4x+6x^2

This is factorisation by common factor, so we need to write 4x+6x 2 as a product. First we need to find the highest common factor of 4x and 6x 2 so that we can take it out, which in this case is 2x, so we ha...
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Answered by Aoife M. • Maths tutor
6763 Views