Mathematics: 20% of is 21. PLS HELP

Step-by-step explanation:Remove brackets.Group like terms.Combine like terms....

20% of is 21. PLS HELP - id202110648453, cjulius9437

Cassandoo

18.03.2022

105

Step-by-step explanation:

0.2(x)=21

x=21/0.2

x=105

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marleas

26.09.2020

$\large \boxed{\sf \ \ x^2 + 7x + 5 \ \ }$

Step-by-step explanation:

$\mathrm{\sf (-3x^2 + 2x -4) + (4x^2 + 5x + 9)}$

Remove brackets.

$\large{\sf -3x^2 + 2x -4 + 4x^2 + 5x + 9}$

Group like terms.

$\large{\sf -3x^2 + 4x^2 + 2x + 5x + 9 -4}$

Combine like terms.

$\large{\sf x^2 + 7x + 5}$

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