Question

HELP ME PLEOPLE THIS IS SO CONFUSING HELP ME I WILL GET SUSPENDED IF I DON"T ANSWER THIS HELP ME PLEASE HELP I WILL GET A 0 AND SUSPENDED HELP HELP
a) Work out (2.3×10⁴) × (1.5 ×10⁻²)
Give your answer in standard form.
b) Work out (3.6×10⁻⁵) / (1.8 ×10⁻²)
Give your answer in standard form.

Answer 1

The equivalent expressions are  3.45 * 10^2  and 2 * 10^-3.

Scientific notations

The standard form of scientific notation is expressed according to the expression A * 10^n.

Give the expressions;

a)  (2.3×10⁴) × (1.5 ×10⁻²)

Using the power rule of indices:

a^n * a^m = a^m+n

Applying this rule will give:

(2.3×1.5)×(10⁴×10⁻²)

3.45 * 10^2

b) (3.6×10⁻⁵) / (1.8 ×10⁻²)

3.6/1.8 * 10^-5/10^-2

2 * 10^-5+2

2 * 10^-3

This gives the required scientific notations

Learn more on scientific notations here:  brainly.com/question/5756316

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