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-3<n<1 n is an integer, write down all the possible values of n.

-2, -1, 0 M1 for 2 correct values, M2 for all 3 correct values
ZB
Answered by Zara B. • Maths tutor
14323 Views

Work out the value 125^(-2/3) (A* Exam Q)

Whenever you have a negative power always take the reciprocal or flip the base value i.e 125. So now it is 1/125 raised to the power of 2/3. By flipping it over the fractional index is no longer negative. So...
PM
Answered by Preveina M. • Maths tutor
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There are 10 boys and 20 girls in a class. The class has a test. The mean mark for all the class is 60. The mean mark for the girls is 54. Work out the mean mark for the boys.

72
CA
Answered by Charlotte A. • Maths tutor
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Express 56 as the product of its prime factors

2 3 x 7
CA
Answered by Charlotte A. • Maths tutor
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Here is a right-angled triangle (base = 8cm and height = 9cm) and a rectangle (length = 16cm). The area of the rectangle is 6 times the area of the triangle. Work out the width of the rectangle.

Area of triangle is 0.5 x base x height. 0.5 x 8 x 9 = 36 Area of rectangle is 6 x 36 = 216 Area of rectangle is also 16 x width 16 x width = 216 (Divide both sides by 16) width = 216/16 = 13.5
HW
Answered by Harry W. • Maths tutor
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