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Factorise X^2-X-20

(X+4)(X-5)

SW
Answered by Stephen W. Maths tutor
3072 Views

Solve the following simultaneous equations: 3x+y=11, 2x+y=8

x=3, y=2

RS
Answered by Reuben S. Maths tutor
2590 Views

What is the difference between a one-tailed hypothesis and a two-tailed hypothesis?

Both one-tailed and two-tailed hypothesis are examples of alternative or experimental hypothesis, which predict there will be a psychological effect. A one tailed hypothesis, also known as a directional h...

Answered by Psychology tutor
57558 Views

Problem of Optimisation: A company is designing a logo. The logo is a circle of radius 4 inches with an inscribed rectangle. The rectangle must be as large as possible.

First, draw a diagram showing the rectangle, the circle and the unknowns . Then find the equations representing this problem (equation of a circle of center 0, x2 +y2=42 ...

Answered by Maths tutor
6710 Views

What is the profit maximising condition? (Hard A-Level question for full marks)

With an understanding of total revenue and total variable cost curves, the marginal revenue (revenue gained form each one-unit increase in production) and marginal cost (cost incurred from each one-unit i...

MB
Answered by Myles B. Economics tutor
1621 Views

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