Question

Can someone help me please

Answer 1

Answer:

Question 1 )

a ) x = 8

y = 10

$\frac{5x}{2y} = \frac{5(8)}{2(10)} = \frac{40}{20} = 2$

b ) x = ½

y = ⅔

$\frac{5x}{2y} = (5 \times \frac{1}{2} ) \div (2 \times \frac{2}{3} ) \\ = > \frac{5}{2} \times \frac{3}{4} = \frac{15}{8}$

Question 2 )

a) a = 4, b = 3, c = 2

$( \frac{ {ab}^{3} }{c} ) = > \frac{4 \times {3}^{3} }{2} = 2 \times 27 = 54$

b ) a = - 2, b = -2, c = -2

$\frac{a {b}^{3} }{c} = \frac{ - 2 \times { - 2}^{3} }{ - 2 } = {2}^{4} \div -2 = { - 2}^{3}$

Question 3 )

a ) e = 11, f = 7

$\frac{e + 5}{4f - 4} = \frac{11 + 5}{4(7) - 4} = \frac{16}{24} = \frac{2}{3}$

b )

$\frac{e + 5}{4f - 4} = \frac{ - 1 + 5}{4( - 4) - 4} = \frac{4}{ - 20} = - \frac{1}{5}$