Question

20. Find the value of (2.3a5b²)x(1.2a²b²), when a = 1 and b =0.5.

21. Find the value of (-8u²v6)x(-20uv) for u = 2.5 and v=1.​

Answer 1

Answer:

Sum in the question not well well understand

Answer 2

Step-by-step explanation:

Questions no.20

Given

a = 1

b = 0.5

$(2.3a5 {b}^{2} ) \times (1.2 {a}^{2} {b}^{2} )$

$(2.3 \times 1 \times 5 \times 0.5 \times 0.5 ) \times (1.2 \times 1 \times 1 \times 0.5 \times 0.5)$

$(0.575 \times 5) \times (0.3 \times 1)$

$2.875 \times 0.3$

$0.8625$

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