Answer:
The rules for adding and subtracting signed decimals are almost the same as the rules for adding and subtracting integers. When dealing with decimals, you need to be especially aware that your decimal points are lined up so that you do not accidentally add or subtract in the wrong place.
Answer:
all i know is that r=7
Step-by-step explanation:
14 is circumference
r= 1/2 of circumference
therefore r=7
Answer:
7 / 10 14 / 20 21 / 30
Step-by-step explanation:
7 out of 10 is its simplest form the equivalent ratio of 7 * 210 * 2 equals 14 / 27 / 10 * 3 * 3 equals 21/30 letter answer
Answer:
15 seconds
Step-by-step explanation:
Simply assume that total length to be covered be 'L'.
Now ,
of total length L is covered in time
.
We know distance traveled =speed×time
Let Object's velocity be V
Using this


Thus, velocity in terms of total length is

Now,
To cover total length L time needed is


Time taken =15 seconds