Good evening Gloria
3t(t+2)-3t² for t=19
Well the first thing we need to do is to replace 19 everywhere we see T
So let's do it together
3(19)(19+2)-3(19)²
57(21)-3(361)
1197-1083
= 114
I hope that's help and if you have questions please let me know :)
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Answer:
a=31
Step-by-step explanation:
1/2(a-9)=11
a-9=22
a=22+9
B) angle fga + angle agc
supplementary angles when added together equal to 180 degrees