Explanation

Given that the two sides of the isosceles triangle are equal:

3x - 2y + 2 = x - y + 7

This simplifies to:

2x - y = 5

The sum of the two equal sides is 12 cm:

(3x - 2y + 2) + (x - y + 7) = 12

This simplifies to:

4x - 3y = 3

Solving these two equations simultaneously, we find x = 6.

Explanation

A number is divisible by 3 if the sum of its digits is divisible by 3.

2+6+5+9 = 22, which is not divisible by 3, so 2659 is not divisible by 3.

Explanation

The correct word is "joyless", not "joyfulless".

"Joyful" already means full of joy, so adding -less to it is incorrect and redundant.

Explanation

Explanation

To determine the number of significant figures in 0.00253, follow these rules:

• Leading zeros are not significant.
• All non-zero digits are significant.

Breakdown:

0.00253 → The leading zeros (0.00) are not significant.

The digits 2, 5, and 3 are significant.

There are 3 significant figures in 0.00253.

Explanation

Learning activities describe the type and extent of tasks learners must do to achieve the goals.

They guide how learning will happen — through reading, discussing, practicing, etc.

Explanation

Seeing the policemen, the robbers ran away.

"Seeing" is the present participle correctly used to show simultaneous action — the robbers ran away when they saw the policemen.

Explanation

"Sky" has only one vowel sound, represented by "y" acting as a vowel.

In this case, "y" sounds like "i" and functions as a vowel.

Explanation

Fe³⁺ (ferric ion) is yellow-brown.

When reduced to Fe²⁺ (ferrous ion), the solution typically shows a light green color.

Explanation

Cooperative learning involves students working together in groups to solve problems, complete tasks, or create projects collaboratively.

This approach promotes teamwork, communication skills, and shared responsibility among learners.