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Algebra Revision Test: Week 7

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Questions and Answers

What does the expression $4(7.34 \times 10^3 + 8.17 \times 10^2)$ simplify to?

$4.65 \times 10^3$

$4.65 \times 10^4$

$4.65 \times 10^5$

$4.65 \times 10^6$ (correct)

What is the expansion of $3(7 + 5)$?

3(7) + 15 (correct)

3(7) - 15

3(7) + 5

3(7) + 3(5)

Factorise the expression $-5x - 30$ in its simplest form.

$-5(x - 6)$

$-5(x + 6)$ (correct)

$5(x + 6)$

$5(x - 6)$

When rearranging the formula $V = LWH$ to make $W$ the subject, what is the correct formula for $W$?

$W = V / (LH)$ (A) Signup and view all the answers

What is the value of $C$ when $F = \frac{1}{2} (9F - 32)$?

$2F - 16$ (B) Signup and view all the answers

In a square patch of turf with side length $x$, what is the total area of the patch in terms of $x$?

$4x^2$ (C) Signup and view all the answers