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Ian's commute to work is 5km. He needs to be there by 9.00am. He travels at 10 km/h, what time does he need to leave home?

Answer is 8.30am Using the speed = distance/time reference the student would do distance/speed or 5/10 = 0.5 hours
IF
Answered by Isabelle F. • Maths tutor
3879 Views

work out: ( 4 × 10^3 )^2 + 3.5 × 10^7 and give your answer in standard form.

Whenever you have to solve an equation, you must always follow BIDMAS. This means that you should always start with expanding any Brackets, then look at any Indices, then Division, Multiplication, Addition a...
JL
Answered by Jade L. • Maths tutor
6669 Views

What is the highest common factor and lowest common multiple?

Lets break the question down into two smaller manageable parts. What is the highest common factor? : Common factor of two numbers is the largest number which perfectly divides both said numbers without any r...
AK
Answered by Amey K. • Maths tutor
4379 Views

Factorise x^2+12x+7

(x+4)(x+3) From the question you need to write out all the multiples of the coefficient of x, in this case: 1 and 12, 2 and 6, 3 and 4. The numbers in the brackets have to also add up to the number at the en...
VA
Answered by Veronica A. • Maths tutor
5630 Views

Factorise and solve X^2+8X+15=0

For any equation in the form ax^2+bx+c and a=1, the first step is to find a set of numbers. In this case, they must add up to 8 (b) and multiply to 15 (c). With trial and error, it can be found that these ar...
JA
Answered by James A. • Maths tutor
3878 Views