Answer: B
<u>Step-by-step explanation:</u>
-10x² + 12x - 9 = 0
a=-10, b=12, c=-9
x = 
= 
= 
= 
=
+/- 
=
+/- 
=
+/- 
The first answer is B
The second answer is D
Answer:
I think it should be triangle
Answer:
that is the solution to the question
Answer:
The number of adults is 
Step-by-step explanation:
Let
x------> the number of children
y------> the number of adults
we know that
-------> equation A
-------> equation B
Multiply equation A by 
-------->
------> equation C
Adds equation B and equation C
