Answer:
A)
Step-by-step explanation:Quadratics
If you put brackets around (2+1), your method of working is:
1) 15-4*(2+1)=3
2) 15-4*3=3
3) 15-12=3
You don't need any more brackets, as the BIDMAS (brackets, Indices, division, multiplication, addition, subtraction) rule does the rest of the job for you.
The answer is therefore: 15-4*(2+1)=3
Answer:
Step-by-step explanation:
so the least common denominator is 12, so:
multiply 3/4ab by three, which equals: 9/12ab
9/12ab-5/12ab = 4/12ab, or 1/3ab
Answer:
75cm^2
Step-by-step explanation:
Check attachment
