25%of what number is 21? Explain

84

Explanation:

First convert

25

%

to its decimal number.

25

%

=

25

100

=

1

4

=

0.25

25

%

"of" a number means to multiply

25

%

by that number. Let

x

be the number.

0.25

x

=

21

Divide both sides by

0.25

.

0.25

1

0.25

1

x

=

21

0.25

Simplify.

x

=

84

explanation:

an enlarged virtual image is the answer

explanation: in any substance/object, the particles inside it (atoms/molecules) constantly move in random directions and with random speeds (this motion is called brownian motion). as a result, the particles have some kinetic energy (which is proportional to the temperature of the substance).

explanation:

have a great day!