Both are correct depending on the situation
did not decide -- this is past simple negative and is used to talk about something in the past that is finished now.
You did not decide what was right and you missed out.
Have not decided -- this is present perfect negative and is used to talk about something that happened in the past that has a present result.
You have not decided what is right and now you miss out.
The congress decided to pay some of them with land
Decision is a noun. The verb form is decide, and the past tense is decided.
They decided to because Lincoln called forso many Virginians to fight.
the reasone why he decided to led the rebillion that day was because most slave owners were at church
the us decided to enter world war because they want the resources of France, and they want to keep on ruling france.
The correct term is decided to join.
Decide is a regular verb so you add - ed to make the past and the past participle.decide / decided / decided
The infinitive would be "to decide", the present tense would be "decide(s)", and the past tense IS "decided". The word decided is the past tense. The present and future tense are (PRESENT) decides or decide and (FUTURE) will decide.
The correct spelling is decided (made a decision, settled).
This is likely one of these : DECIDED - made a decision DECEASED - dead DISSECTED - cut into sections or parts
Decide is a verb. past = decided
The present perfect tense of decide is:I/You/We/They have decided.He/She/It has decided.
the future perfect of "decide" is "have decided".
The past tense of decide is decided.
I/You/We/They decide. He/She/It decides. The present participle is deciding.
Decided
use it in a sentance i have decided...... verb