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

3 0

3 years ago

Calculate x you must include the steps and your solution and the definitions and or conjuncture that you use

Lelu [443]

Answer:

Step-by-step explanation:

4 0

3 years ago

I need help with my fractions <br> 9/14

inna [77]

Well 9/14 is already a simplified fraction :/ You will only get a decimal at this point :D

7 0

4 years ago

does this data represent a direct variation or an inverse variation? x6 y 9, x 8 y 12, x 12 y 18, x 20 y 30

Karo-lina-s [1.5K]

Answer:

it is a direct variation because k is proportionally constant

Step-by-step explanation:

direct variation is y=k.x

inverse variation is k=y.x or y=k/x

6/9 = 2/3

8/12=2/3

12/18=2/3

20/30=2/3

i even add a graph for you

6 0

4 years ago

Look at this shape: Which image shows a reflection? vo A B C с​

Look at this shape: Which image shows a reflection? vo A B C с