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Jorgen has 20 sweets in his pocket. The sweets are either blue or yellow. He picks a sweet and eats it and takes another sweet and eats it again. The probability of him picking two blue sweets is 6/30. How many yellow sweets does he have in his pocket.

1st step: Firstly we know 3 things: 1. There are 20 sweets in total 2. The sweets are either blue or yellow 3. The probability of picking two blue sweets in 6/30 We let the total number of blue sweets in his...
YS
Answered by Yusuf S. • Maths tutor
7078 Views

Find the coordinates where the curve f(X)= X^2+X-6 touches the x axis using factorisation.

The first part of this question requires be student to realise that touching the x axis equates to f(x) equalling 0, so we must equate the expression to 0. Next we need to factorise the expression. This mean...
WT
Answered by William T. • Maths tutor
3369 Views

Solve the equation 5(2c - 3) = 19

5(2c - 3) = 19 5x2c - 5x3 = 19 10c - 15 = 19 10c = 19 + 15 10c = 34 c = 34/10 = 3.4
EB
Answered by Eivinas B. • Maths tutor
3979 Views

What is Pythagoras' Theorem and how do you use it?

Pythagoras' Theorem: a 2 + b 2 = c 2 where a, b, c relate to the sides of a right-angled triangle, and c is the hypoteneuse. Use the equation to find the length one side if you only know the lengths of two o...
HS
Answered by Hermione S. • Maths tutor
3823 Views

Solve the equation for x: 3x^2 -5 = 22

x =3 or x= -3
RM
Answered by Rachel M. • Maths tutor
3861 Views