Explanation

144÷12=12

12×3=36

So,

144÷12×3=36

Explanation

A compound sentence contains two independent clauses connected by a coordinating conjunction (e.g., and, but, or).

Example: I like tea, but she prefers coffee.

Explanation

An adverb can modify a verb, adjective, or another adverb.

It answers questions like how, when, where, and to what extent.

Example: She runs quickly.

Explanation

Change from direct to indirect speech:

"He said, 'Are you ready?'" → This is a question.

The reporting verb becomes "asked."

"Are you ready?" → "if I was ready" in indirect speech.

Explanation

The main rivers in Egypt are the Nile River and its tributaries.

The Nile is the longest river in the world at 6,650 km.

It is located in Northeast Africa

It is the only river that flows from south to north.

Explanation

Cornstarch and water form a non-Newtonian fluid called oobleck, which:

• Acts like a liquid when moved slowly
• Acts like a solid when force is applied

Explanation

Use integration by parts:
Let $u=x$, $dv=\cos (x)dx$

Then:

$$\int x\cos (x)dx=x\sin (x)-\int \sin (x)dx=x\sin (x)+\cos (x)$$

Evaluate from $0$ to π/2

$$= left( frac{pi}{2} cdot 1 + cosleft( frac{pi}{2} right) right) - left( 0 + cos(0) right) = frac{pi}{2} - 1$$

π/2​−1

Explanation

 The Constitution is the document that outlines the structure and functions of a government, including:

• The principle of separation of powers, which divides authority into different branches (legislative, executive, and judicial)
• To prevent any one branch from becoming too powerful

Explanation

According to BODMAS, brackets are solved first. So, the expression inside the brackets 

(3+2) will be solved first before proceeding with multiplication or addition.

Explanation

To calculate average speed, use the formula:

Average Speed=Total Distance/Total Time​

Given:

• Total Distance = 60 km

• Total Time = 2 hours

Now, substitute these values into the formula:

$$text{Average Speed} = frac{60}{2} = 30 , text{km/h}$$