Answer:
25%
Step-by-step explanation:
(16-12)/16=0.25
0.25×100=25
Answer:
,
,
,
, 
Step-by-step explanation:
First question:
He starts with 18, gains 2 every week, and needs 42. This means the equation is
.
Second question:
He starts with 2, gains 18 every week, and needs 42. This means the equation is
.
Third question:
It starts with 42, loses 2 every day, and needs 18. This means the equation is
.
Fourth question:
Each friend has a total bill of 18+x, there are 2 friends, and they need 42. This means the equation is
.
The only answer left is
, so that's the answer to the fifth problem.
Because it means it has two answers when -8×-8 it equals 64 so is 8×8
in math when negative multiply negative it will be positive...
The measurement of angle a plus 120 must equal to 180 ( as angles on a straight line must equal to 180)
So measurement of angle a is 60 degrees
Measurement of angle b plus 60 plus 60 must equal to 180
So measurement of angle b is 60