Answer:
1. They help you with estimation
2. It makes numbers simpler and easier to do
3. Makes mental maths much quicker
11. P=[2(x+y)]3 = 6(x+y) or 6x+6y
12.A=(x+3)(y+3) or xy+ 3x + 3y + 9
Answer:
See attached
Step-by-step explanation:
<u>The first one</u>
<u>The second one</u>
- -3x > 24 + 6
- -3x > 30
- x < -10
- x = ( -oo, -10)
Just Plug in the -3 for x in the equation
10-2(-3-6)
=
10+6+12
=
16+12
=
28
Answer:
there are 3 red fish
Step-by-step explanation:
1:5
_:15
5 times 3 =15
so 1 times 3 =3