Top answers

Explain how it is possible for two parents without blue eyes (a recessive trait) to have a child with blue eyes

This would be possible if both parents were carriers of the allele for blue eyes ( heterozygous). This means each would have one blue eye allele and one non blue eye allele and as the non blue eye allele is ...
SB
Answered by Sylvie B. • Biology tutor
3842 Views

What benefits did the First World War bring to the American economy? [4 marks]

America benefited from taking the markets of countries at war and retaining the domestic market after the war. During the war, the US economy boomed due to one-way war trade to European powers. Raw and finis...
SB
Answered by Sophie B. • History tutor
13095 Views

By completing the square, find the solutions of x which satisfy the equation x^2+14x-1=0

Using the general complete the square formula, where x 2 +bx+c=0 becomes (a+b/2) 2 +b 2 +c=0, we get (x+7) 2 -7 2 -1=0 This can be rearranged to show that (x+7) 2 =50 by taking the square root of both sides ...
IF
Answered by Immie F. • Maths tutor
3495 Views

A person swims from a depth of 0.5m to 1.7m below the surface of the sea. Denisty Sea Water = 1030 kg/m^3. g=Gravitational Field Strength = 9.8 N/kg. Calculate the change in pressure on the swimmer and give the unit.

Use equation: Pressure = density x depth in the fluid x gravitational field strength. We know the in increase in pressure will be the difference between the Final Pressure (at 1.7m) and the Initial Pressure ...
JS
Answered by Jack S. • Physics tutor
5170 Views

For the equation, 5(7x + 8) + 3(2x + b) ≡ ax + 13. Find the values of a and b. You may use a calculator.

By expanding the brackets on the left hand side of the equation you get,35x + 40 + 6x + 3b and by simplifying you get 41x + 40 + 3b.by comparing the x and constant terms on either side you find that a = 41, ...
DB
Answered by David B. • Maths tutor
12511 Views