Question

2×10power1+5×10power-2 +7×10power-3​

Answer 1

Answer:

20.057

Step-by-step explanation:

$2 \times {10}^{1} + 5 \times {10}^{ - 2} + 7 \times {10}^{ - 3}$

$20 + \frac{5}{100} + \frac{7}{1000}$

$20 + 0.05 + 0.007 = 20.057$