The answer is "The mathematical work is correct as written"
Answer: 25 mm
Explanation:
Multiply 2.5 by 10 since 1=10 and there are 2.5
2.5(10)
=25
(2.5×10⁻⁸)(9×10⁻¹⁰) = 2.5×9×10⁻⁸⁻¹⁰ = 22.5×10⁻¹⁸
= 2.25×10⁻¹⁷
_____
The rules of exponents apply.
... 10^a × 10^b = 10^(a+b)
... 22.5 = 2.25 × 10¹
80 * 250 =20,000
The iPod can hold 250 songs per gigabyte.
Answer:
P(A or B) = 0.9.
Step-by-step explanation:
This is a question of Venn probabilities.
We use the following relation to solve this question.

The exercise states that:

Then

The answer is:
P(A or B) = 0.9.