Explanation

First, solve the expression inside the parentheses: 3 + 7 = 10.

Then, multiply 10 by 4,

which equals 40.

Explanation

To find x, divide 60 by 5, which gives x = 12.

Explanation

 According to the order of operations (PEMDAS/BODMAS), multiplication is done first.

So, 6 × 2 = 12,

9 + 12

= 21.

Explanation

30% of 50 is calculated by multiplying 50 by 30/100, which equals 15.

Explanation

Sunlight is white but appears yellow due to light scattering in the Earth's atmosphere.

Explanation

O2 is the chemical formula for oxygen.

H2O is the formula for water.

Explanation

To find 200% of 55, you can multiply 55 by 2 (since 200% is equivalent to 2 times 100%).

55 × 2 = 110

Explanation

To solve 3 + 3 × 3, follow the order of operations (PEMDAS/BODMAS):

Perform the multiplication first: 3 × 3= 9.

Then add: 3 + 9 =12.

So, the result is 12.

Explanation

The result of 0 × 33 is 0.

Multiplying any number by 0 always results in 0.

Explanation

To solve the equation X + 4= 100:

Subtract 4 from both sides: X= 100 − 4

Simplify: X=96

So the value of X is 96.