Question

PLEASE!! I need help urgently,

Answer 1

Part 1.

1. 15,000 = has 2 significant figures because it doesn't have any insignificant leading zeroes.
2. 0.025 = has 2 significant figures because it doesn't have any insignificant trailing zeroes.
3. 7,600 = has 2 significant figures because it doesn't have any insignificant leading zeroes.
4. 0.46000 = has 2 significant figures.
5. 0.0000000025 = has 2 significant figures.
6. 900 = has 1 significant figure.
7. 900. = has 3 significant figures.
8. 4.90 × 10⁶ = 490000000 = has 2 significant figures.
9. 10,100 = has 3 significant figures.
10. 0.07007 = has 4 significant figures.

Part 2.

1. 2.15 × 65 = 139.75 ≈ 140 (Sig. Figs: 2)
2. 800 × 25 = 20000 (Sig. Figs: 1)
3. 3.00 × 24.00 = 72.0 (Sig. Figs: 3)
4. 0.150 × 4.000 = 0.600 (Sig. Figs: 3).
5. (4.100 × 10⁵) × (1.4 × 10⁻³) = 5.7 × 10² = 5700 (Sig. Figs: 2)
6. 37.225 + 41.1 = 78.3 (Sig Figs: 3)
7. 21.0 + 530 = 551 (Sig Figs: 3)
8. 0.00450 + 0.002911 = 0.00741 (Sig. Figs: 3)
9. 32000 + 182,525 = 214,525 (Sig. Figs: 6)
10. 1.71 × 10⁻³/4.100 × 10⁻⁴ = 4.17 × 10 = 41.7 (Sig. Figs: 3).

What is a numerical data?

A numerical data is also referred to as a quantitative data and it can be defined as a data set that is primarily expressed in numbers only. This ultimately implies that, a numerical data simply refers to a data set consisting of numbers rather than words.

What is a significant figure?

In Mathematics, a significant figure can be defined as the number of digits in a numerical data (value), typically a measurement, which enhances its degree of accuracy.

Read more on significant figures here: brainly.com/question/24491627

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