You can round 15 to 20, and 8 to 10
Answer:
hypotenuse is 34
Step-by-step explanation:
a²+b²=c²
16²+30²=c²
256+900=1156
√1156 =34
hypotenuse =34
Add the three strips of cut wood together:


John will need to cut a total of 50.05cm of wood.
Subtract this total from the strip John has:

The leftover piece will be 21.95cm long.
Answer:
<em>The population on 30th day will be </em><em>134836</em><em>.</em>
Step-by-step explanation:
This is a case of exponential growth. The general form of exponential function is,

where, a and b are constants.
The data points from the question are 
Putting the values in the function,
for 
----------1
for 
------2
Dividing equation 2 by 1,


Putting the value of b in equation 1,

Now the function becomes,

Putting x=30, we get

B. 12 is the answer to your queation