2a+1 + 3a+2 +5a-9 you would start by combining like terms
2a+3a+5a= 10a
1+2-9= -6
10a-6=94
then subtract 94-6=88
then divide 88 by 10= 8.8
a=8.8
Answer:
What question? We need more context
Answer:
cos(A)=√21/5
Step-by-step explanation:
Use the definition of each function as well as the Pythagorean Theorem.
Hope it helps :>
