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The width of a rectangle is X cm.
 The length is 1·5 cm more than the width.
 The perimeter of the rectangle is 17 cm. Write down an equation satisfied by X
 and solve it to find X.

Let's call the length ' L ', and the width ' X '. Since the length is 1.5cm more than width, we can form the equation: L = X + 1.5 (Equation 1)Let's call the perimeter ' P '. Therefore, we know that P = 17cm...
OD
Answered by Oliver D. • Maths tutor
7817 Views

Write the following in their simplest form: a) 8^0 b) 64^(2/3) c) 0.54545454...

a) 8 0 = 1 b) 64 2/3 = (64 1/3 ) 2 = 4 2 =16 c) 0.54545454... = x 100x = 54.545454.... 100x-x = 54 99x = 54 x = 54/99 x = 6/11
ES
Answered by Emmanuel S. • Maths tutor
3970 Views

You're on a game show and have a choice of three boxes, in one box is £10, 000 in the other two are nothing. You pick one box, the host then opens one of the other boxes showing it's empty, should you stick or switch?

At the moment of your first choice you have a 1/3 chance of picking the box with the prize and a 2/3 chance of getting nothing. After your choice those probabilities remain locked in and do not change as whe...
JB
Answered by Jonathan B. • Maths tutor
9055 Views

You are sitting in a boat on a lake, you have with you in the boat a large rock. You throw the rock out of the boat and it sinks to the bottom of the lake, does the water level of the lake go up, down or stay the same?

Whilst in the boat the rock (and you) are floating, this means that the amount of water displaced by the rock is the mass of the rock. When the rock sinks to the bottom of the lake the amount of water displa...
JB
Answered by Jonathan B. • Physics tutor
10589 Views

Qu'est ce qu'on peut faire chez nous pour protéger la planète?

Aujourd'hui il est maintenant absolument primordial qu'on essaie de protéger la planète plus que jamais. A mon avis, la question de l'environnement m'inquiète énormément et il me semble que la réponse doit c...
CG
Answered by Christian G. • French tutor
3134 Views