Algebraic expressions I - Ambitious

Question 1: Multiply:

\frac{1}{3} a \times 1 \frac{5}{7} b

A

\frac{4}{7} a b

B

\frac{5}{21} a b

C

\frac{4}{7} a

D

1 \frac{5}{21} a b

Question 2: If formula

ρ = \frac{m}{V}

find

m

A

m = \frac{ρ}{V}

B

m = ρ V

C

m = ρ^{2} V

D

m = \frac{V}{ρ}

Question 3: Simplify:

3 a^{- 7} \times \frac{1}{3} a^{5}

A

a^{- 2}

B

3 a^{5}

C

a^{12}

D

3 a

Question 4: Subtract:

17 m 5 d m - 3 m 7 c m

A

14 m 2 c m

B

14 m 43 c m

C

14 m 2 d m

D

14 m 43 d m

Question 5: Multiply:

(3 x - 1) (9 x^{2} + 3 x + 1)

A

9 x^{3} - 1

B

27 x^{3}

C

27 x^{3} - 1

D

9 x^{2} - 1

Question 6: Find

66 %

of

385

A

2.541

B

2541

C

25.41

D

254.1

Question 7: Rewrite in fraction form:

{(5 a^{- 5} c)}^{- 1}

A

\frac{1}{5 a c}

B

\frac{5}{a c}

C

\frac{5}{a^{2}} c

D

\frac{a^{5}}{5 c}

Question 8: Reduce:

\frac{c^{2} - 3}{c - \sqrt{3}}

A

c + \sqrt{3}

B

c - \sqrt{3}

C

c^{2} - \sqrt{3}

D

c^{2} - 3

Question 9: Determine value of x for which expression

9 x + 2

is two times larger from

3 x + 4

A

x = - 1

B

x = 2

C

x = 1

D

x = - 2

Question 10: Multiply:

\frac{a^{2} - c^{2}}{a^{2} + a c} \times \frac{2 a}{c - a}

A

- 2

B

2 a

C

2 c

D

2

Test: Algebraic expressions I - Ambitious

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