Explanation

A digital signature verifies the authenticity of an email by confirming the sender's identity and ensuring the message hasn't been altered.

It uses cryptography to validate the sender's identity and ensure the integrity of the email content.

Explanation

"Everyone" is a pronoun that refers to all individuals in a group.

It is used as a singular entity in sentences despite implying a plural meaning.

Explanation

 The Leaning Tower of Pisa is in the city of Pisa, in Tuscany,

Explanation

Excel uses three types of references:

1. Relative
2. Absolute
3. Mixed

These determine how cell references adjust when formulas are copied across cells.

Explanation

A column chart is ideal for comparing the performance of two employees in 2021 because it allows for a side-by-side comparison of their performance metrics, such as sales, productivity, or revenue.

Pie Chart: Shows how different components contribute to a whole.

Dot Chart: Displays a small number of data points.

Column Chart: Compares performance metrics side-by-side.

Line Chart: Shows trends over time.

Explanation

The "Track Changes" feature in MS Word allows you to track changes made to a document.

It enabling users to see edits, additions, and deletions made by different collaborators.

This tool is essential for reviewing and managing document revisions efficiently.

Explanation

To simplify the expression, we need to follow the rules of fractions and combine like terms:

X + 1/7 - X - 1/8

First, subtract X from X, which cancels out:

1/7 - 1/8

To subtract fractions, we need a common denominator, which is 56. So we can rewrite the fractions as:

(8/56) - (7/56)

Now we can subtract: 1/56

So the simplified result is:

1/56

Explanation

The formula evaluates as:

(7-3)×(4+3)/4 = 4×7/4 = 28/4 = 7.

Explanation

• Type the entire equation: = B1+B2+B3+B4+B5
• Use the SUM function: = SUM(B1: B5)
• Press the Enter key to complete the formula

Explanation

• A worksheet is an electronic spreadsheet that lets users to Calculate, Enter & Analyze data.
  

  A spreadsheet is a computer application for computation, organization, analysis and storage of data in tabular form.