Top answers

The function f is given by f(x) = SQRT(2x − 5). Work out x when f(x) = 1.2

1.2 = SQRT(2x-5)square both sides1.2^2 = 2x -5 add 5 to both sides 1.2^2 + 5 = 2xdivide both sides by 2(1.2^2 + 5)/2 = x
KY
5726 Views

Work out the value of 2^4

2x2x2x2 = 4x2x2 =8x2=16or(2x2)x(2x2)=(4)x(4)=16
KY
Answered by Kieran Y. • Maths tutor
7596 Views

Factorise x^2 -2x-3

Because of the signs within the equation we know that the factorised solution will be in the form (x+?)(x-?)The two numbers in the brackets have a product of -3 and the sum of -2.In this case, the numbers ar...
JA
Answered by Joshua A. • Maths tutor
11129 Views

Describe the secondary effects of volcanic eruptions [4]

Volcanic eruptions can result in a wide variety of secondary effects, which are effects which happen some time after the eruption itself. Most commonly, these are negative, for example, travel can be disrupt...
CG
15127 Views

What is the difference between the perfect tense and the preterite tense?

The preterite and perfect tenses are both used when an action has been completed . Then, what is the difference? Well, their use depends on regional differences and varieties of Spanish. But don't panick! It...
JB
Answered by Joanes B. • Spanish tutor
3609 Views