Explanation

A complex sentence consists of one independent clause and one or more dependent clauses connected by subordinating conjunctions.

Dependent clauses cannot stand alone as complete sentences, whereas the independent clause can.

Explanation

Explanation

To find the sum of the four numbers, multiply the average by the total count of numbers:

Average = 24

Total count = 4

Sum = Average × Total count

Sum = 24 × 4

Sum = 96

Explanation

The surface area of a sphere is given by the formula: 4πr².

Substituting r = 7 cm, we get 4 × 3.1416 × (7)² = 616 cm².

Explanation

• In the human heart, blood returning from the lungs via the pulmonary veins drains into the left atrium.
• From there, it flows through the mitral valve into the left ventricle, which pumps it out to the rest of the body through the aorta.

Explanation

Linking verbs do not express action; instead, they connect the subject to additional information, such as a state or condition.

Examples include is, am, are, was, were, seem, become, which link the subject to a complement (e.g., "She is happy.").

Explanation

The sum of the internal angles of a polygon can be found using the formula:

(n-2) × 180°

where n is the number of sides.

For a regular octagon (8 sides):

(8-2) × 180° = 6 × 180° = 1080°

Since it's a regular octagon, all internal angles are equal. To find the measure of each internal angle, divide the total sum by the number of angles:

1080° ÷ 8 = 135°

Explanation

Imperative sentences give commands, requests, or instructions.

"Move the chairs into that corner quickly." is a command, making it an imperative sentence.

Explanation

Acid rain reacts with minerals in stone structures, leading to their decay, which is termed "stone cancer."

It mainly affects limestone and marble, causing surface erosion and weakening of buildings and statues.

Explanation

Mean is influenced by extreme values because it considers all data points in its calculation.

Median is resistant to extremes.

While mode only represents the most frequent value.