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11 Plus

What number is in the middle between 4.8 and 6?

Use of number line to show it is 5.4

Answered by Hamza H. • Maths tutor

5232 Views

There are 25 CD's in a box and an individual orders 14 boxes. How many CD's did the person order in total

as there are 25 CD's in one box, then we would multiply by 14 to know the total number of CD's, we use multiplication as it is quicker than adding 25 14 times. I would then show the column multiplication ...

Answered by Aisha B. • Maths tutor

1746 Views

I’m confused by the difference between using f’(x) and f”(x) to find the minima and maxima of a curve

Imagine you have an object moving through time, like a car on the road. The distance that car travels=xThe speed of that object=f’(x)This is because speed is defined as the the rate of change of distance ...

Answered by Xorsheed Z. • Maths tutor

2004 Views

Jim weighs 74.2kg, Connie weighs 67.8kg and Jane weighs 69.4kg. What is the range in their weights?

Range is biggest possible difference, so we need to find the largest weight and the smallest weight given to us:
Heaviest = 74.2kg (Jim) Lightest = 67.8kg (Connie)