Firstly, you've got to expand the brackets, this becomes;
8a-4= -10a+ 50
You've then got to eliminate the -10a and you do this by adding 10a to both sides,
This then becomes 18a-4=50
You've then got to add 4, to eliminate this, which then becomes 18a=54
You've then got to divide both sides by 18, and this becomes 3.
Therefor, a=3
Hope this helps :)
2^2+b^2=12^2
4+b^2=144
144-4=140
√140 = √b
11.83 = b
Answer:
$24:1
Step-by-step explanation:
1200:50
1200/50
$24:1
Answer:
how many are there
Step-by-step explanation:
we need to know many are in total
