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The quadratic equation (k+1)x^2 + (5k-3)x + 3k = 0 has equal roots, find the possible values of the real number k.

Given that the equation is quadratic and has two distinct roots , this implies that the discriminant (b² - 4ac) in the quadratic formula is equal to zero. Comparing terms a = (k+1), b = (5k -3)...

Answered by Adam L. • Maths tutor

5194 Views

Discuss two ways in which a country's international competitiveness could increase (8)

International competitiveness refers to how attractive a products in country are in international markets in terms of quality and price. One way in which Britain could increase its international competiti...

Answered by Tom C. • Economics tutor

2922 Views

Outline Bowlby’s evolutionary theory of Attachment

According to Bowlby, attachment is an innate behavioural system that has evolved because of its survival value. Bowlby posits a ‘sensitive period’, during which an infan...

Answered by Chloe B. • Psychology tutor

3981 Views

What is the difference between a one-tailed and two-tailed hypothesis? How Would you operationalise a hypothesis?

A one-tailed hypothesis predicts the direction of the results, whereas a two-tailed hypothesis does not. A two-tailed hypothesis simply states there will be an effect of the Inde...

Answered by Chloe B. • Psychology tutor

4906 Views

Water is flowing into a rightcircular cone at the rate r (volume of water per unit time). The cone has radius a, altitude b and the vertex or "tip" is pointing downwards. Find the rate at which the surface is rising when the depth of the water is y.

Always a good first step to a problem like this, is to draw a diagram, making sure to label any lengths. The unknown in this question, is the rate at which the surface of water, in the cone, is rising. Ho...

Answered by Joss O. • Maths tutor

3366 Views