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A group of 5 people order 2 8 inch pizzas, with heights 2cm and 1cm, and density 3/pi g/cm^3, and 5/pi g/cm^3 respectively. If they divide each pizza evenly, how much pizza, in grams, does each person eat? Use 1 inch = 2.5 cm.

This is a slightly advanced GCSE question, involving multiple steps. Each step is quite simple however.First, set out the known variables. Note that the 8 inches is the pizza diameter.r = 8*2.5/2 = 20/2 = 10...
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Answered by Ibrahim Q. • Maths tutor
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Solve the following simultaneous equations: 3x + y = 11, 2x + y = 8

This problem can be solved by using elimination.Label 3x + y = 11 as equation (1) and 2x + y = 8 as equation (2).We first want to eliminate one of the variables so that we can then reach a value for the othe...
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Answered by Oscar D. • Maths tutor
5311 Views

Rationalise the denominator of the following fraction: 9/((root13)-1). Write your answer in its simplest form.

Firstly, a quick overview of rationalising the denominator. For this, we want to make sure that the bottom half of the fraction (the denominator) is rationalised (and so doesn't contain any surds any more). ...
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Answered by Callum C. • Maths tutor
3447 Views

Translate this passage into English: " Я живу в деревне. У нас маленький домик. Я люблю жить там, потому что очень тихо. Мы жили в городе, но было довольно шумно. Мой отец работает врачом в городской больнице."

I live in a village. We have a small house. I like living there, because it is really quiet. We used to live in a city but it was quite noisy. My father works as a doctor at the city hospital.
SM
Answered by Sasha M. • Russian tutor
2356 Views

Make r the subject of the formula x = (3r - 4)/5

Multiply both sides by 5: 5x = 3r - 4Add 4 to both sides: 5x + 4 = 3rDivide both sides by 3: (5x + 4)/3 = r
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Answered by Oskar M. • Maths tutor
3653 Views