Step-by-step explanation:
12 to the 2nd power=144
15 to the 2nd power =225
225-144=81
square root of 81 is 9
what is your question then?
Answer:
6 * 10^2
Step-by-step explanation:
Simplify : (4.2×10^7)÷(7×10^4)
(4.2 × 10^7) / (7 × 10^4)
From indices : 10^a ÷ 10^b = 10^(a - b)
(4.2 / 7) * 10^(7-4)
0.6 * 10^3
= 6 * 10^2
Hence, (4.2×10^7)÷(7×10^4) = 6 * 10^2
The answer would be 400$. This is because 40 x 10 = 400.
Answer:
The newspaper has 500 readers.
Step-by-step explanation:
We have that:
10 people is 2$ of all newspapers readers, which total t. This means that:
The newspaper has 500 readers.