Explanation

The formula of area of square.

means

Area = 4

a^2

4^2

4x4 = 16

Explanation

=100x10/100

=90

Explanation

The only countable set is the set of all rational numbers

A set is countable if its elements can be put into a one-to-one correspondence with the natural numbers.

Rational numbers can be expressed as a fraction frac{p}{q}, where p and q are integers and q is not zero.

Explanation

The calculation is done as follows:

8 ÷ 4 = 2

2 + 4 = 6

So, 8 ÷ 4 + 4 = 6.

Explanation

The calculation is done as follows:

3 × 4 = 12
12 ÷ 2 = 6

So, 3 × 4 ÷ 2 = 6.

Explanation

Ali's current age is 32.

His son's current age is 0 (newborn).

We want to find the number of years it takes for Ali's age to be 5 times his son's age.

Let's assume the number of years is x.

After x years, Ali's age will be: 32 + x

And his son's age will be: 0 + x = x

We want Ali's age to be 5 times his son's age, so we set up the equation: 32 + x = 5x

Subtracting x from both sides: 32 = 4x

Dividing both sides by 4: 8 = x

Therefore, it will take 8 years for Ali's age to be 5 times his son's age.

The correct answer is 8 years.

Explanation

Zero is a real number because it is an integer.

Integers include all negative numbers, positive numbers, and zero.

Real numbers include integers as well as fractions and decimals.

Zero also represents the absence of any negative or positive amount.

Explanation

= 99 + 77 + 55 + 33 + 11

= 176 + 55 + 33 + 11

= 231 + 33 + 11

= 264 + 11

=  275

Explanation

= 2^2 x 3^3 x 2^-5 x 3^-2 x 2^2 

= 4 x 27 x  0.03125 x 0.11 x 4 

= 6

Explanation

A ratio can be written in three different ways:

with the word “to”: 3 to 4.

as a fraction: 3/4

.with a colon: 3 : 4.