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Bag A contains £7.20 in 20p coins. Bag B contains only 5p coins. The number of coins in bag B is three-quarters of the number of coins in bag A. How much money is in bag B?

First you want to find out how many coins there are in bag A. So how many 20p coins do you need to make £7.20? This is the same as 720p. 720 divided by 20 is the same as 72 divided by 2 which is 36. So there...
AE
Answered by Anezka E. • Maths tutor
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Explain the similarities and differences of Homer's Achilles and Virgil's Aeneas.

Both epic heroes share some common features derived from the Homeric texts, but also some substantial differences. Aeneas and Achilles are both mighty heroes. They are descirbed with honorific epithets, they...
AP
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Find the displacement function if the acceleration function is a=2t+5. Assume a zero initial condition of displacement and v=8 when t=1.

Integrating the acceleration function gives the velocity function v, as below: v = t 2 +5t +C 1 , where C 1 is a constant. Integrating the velocity function gives the displacement function x, as below: x = t...
JH
4931 Views

Do y=3x^2+5x+12 and y=3x-8 intercept with each other? If yes, at which point(s)?

This is like solving 2 simultaneous equations. Both equations are in a form of y=ax^2+bx+c. Equate both equations together and you got: 3x 2 +5x+12 = 3x-8 Put both polynomials at one side and you got: 3x 2 +...
JH
Answered by Justin H. • Maths tutor
5281 Views

Why does the temperature decrease in the endothermic reaction?

The temperature of the surrounding is decreased because energy is taken into the reaction. An example of this is two solutions A and B being mixed and the resultant product mixture having lower temperature.
HL
Answered by Harry L. • Chemistry tutor
11258 Views