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Given that 7/9 = 0.77777777 (recurring) convert 0.27777777(recurring) into a fraction. Give your answer in the simplest form.

if 7/9 = 0.777777 then 0.0777777 must be equal to 7/90 as it is a tenth of the original number. 0.2= (2/10)(7/90) + (2/10) = 0.27777777 find the lowest common multiple: 90, then make the denominators of each...
NK
Answered by Nial K. • Maths tutor
6379 Views

Solve algebraically the simultaneous equations x2 +y2 =25 and y – 3x = 13

Firstly, let's begin by rearranging the second equation so that we can get y on its own. Therefore we will get, y = 3x +13. Through substitution, we can do this:x 2 + (3x +13) 2 = 25 . (As y is equal to 3x +...
TM
Answered by Tasmin M. • Maths tutor
7583 Views

What's the difference between ser and estar?

Both ser and estar mean ‘to be’ but each has different uses. This can be confusing for native English speakers because in English there is only one word. Ser is used when we want to describe characteristics ...
TB
Answered by Tasia B. • Spanish tutor
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Insert a pair of brackets into this question to make it correct 2 + 5 x -6 = -42

(2+5) x -6 = 42
IO
Answered by Inumidun O. • Maths tutor
4509 Views

Find two solutions to the quadratic equation x^2 + 2x - 15 = 0

Firstly, we need to find two numbers that multiply together to make -15 and sum together to make +2. We try a few numbers and find that the solution is -3 and 5, as -3 x 5 = -15 and -3 + 5 = 2.Next you input...
JG
Answered by James G. • Maths tutor
4677 Views