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Write 0.0003532 in scientific notation.

simplify ${\displaystyle \sqrt{\frac{49}{16}}}$

Express 0.0042 in scientific notation.

Write 13,560,000 in scientific notation.

Write 2.5 million in scientific notation.

Write 2000 in scientific notation.

How to use scientific notation.

Write 0.054 in scientific notation.

find square root of 1369.

When $15\sqrt{15}$ is divided by $3\sqrt{3}$, the quotient is:
A)$5\sqrt{5}$
B)$3\sqrt{5}$
C)$3\sqrt{3}$
D)$5\sqrt{3}$

simplify ${\displaystyle \sqrt{14}}$

What is the scientific notation for 0.005.

Express 0.006 in scientific form.

What is the square root of 2500.

Convert ${\displaystyle 1.8\times {10}^2}$ into expanded notation.

Сonvert ${\displaystyle 1.08x{10}^3}$ into standard form.

What is the cube root of 1/125.

Write 984.35 in scientific notation.

Like terms are the terms that contain same variables, same exponents of variables and same coefficients.
A)False
B)True

Why n and what does it mean?
Maybe a bit too early to ask, but I give it a shot. I'm trying to study mathematics again during my free time. Now I tried to figure out what exactly is meant with the multiple. Well this formula makes it quite easy to understand for me, but it's not totally clear yet:
$a=n\times <!--\; \times \; -->b$
So if I understand the formula correctly, for $15=3\cdot <!--\; \cdot \; -->5$ 15 is a multiple of 5, and for $15=3\cdot <!--\; \cdot \; -->5$ 15 is a multiple of 3, so 3 and 5 can both be a multiple of 15. But what I don't understand, why n? Why not just $a=b\times <!--\; \times \; -->c$? I cannot really find an answer for this either, in my study book they just start with formulas like:
$a^n\times <!--\; \times \; -->a^m=a^{n+m}$
without any further explanation why to use n or m. Hopefully somebody has an explanation for me