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Solve 7x+6>1+2x

For this such question, we need to find what values x can be. We need to get all the terms containing x one side of the equation and all the other terms on the other side then isolate x. To do this, we must ...
AM
Answered by Annie M. • Maths tutor
7184 Views

Solve simultaneously. x^2+y^2 = 25 ; y - 3x = 13

y = 3x + 1310x^2 + 78x + 169 = 2510x^2 +78x +144 = 0(5x+24)(2x+6) = 0x = -24/5 or -3y = -7/5 or 16
BH
Answered by Ben H. • Maths tutor
3278 Views

There are 5 blue counters and 5 red. x takes 2 counters out of the bag without replacing them. What is the probability x took 2 red counters.

5/10 * 4/9 = 20/90 = 2/9
BH
Answered by Ben H. • Maths tutor
5068 Views

Find the value of (81)^(-1/2)

1/9
BH
Answered by Ben H. • Maths tutor
7526 Views

3 1/2 - 2 1/3

Firstly we need to change each fraction into improper fractions. 7/2- 7/3then we need to give each fraction a common denominator. In this case we will use sixths. 21/6 - 14/6. Ans: 7/6
JT
Answered by Juliette T. • Maths tutor
3475 Views