Step-by-step explanation:
If we calculate so there are 120 sec in 2 min
So we will divide 120 by 15 = 8
It means they will be doubled 8 times
So if bacteria are now 10 so 10 × 8 = 80
There will be 80 bacteria in 2 min
Answer:
243
Step-by-step explanation:
Since they are all inside the bracket, they all get the exponent distributed.
This means that (3^5) * (x^4)^5 * (y^2)^5
The exponents get multiplied.
If for example it was x^5 * x^6 the exponent will be added, but here they are multiplied so we add them.
In our case they are exponent, so we multiply them.
Answer: 1080 km.
Explanation: Since she bikes 30 weekends per year, and for each of those 30 weekends she rides 9km, we can simply multiply 30*9 and find that she bikes 270km a year. However, the question asks how much she bikes in four years. To solve for this we can multiply our yearly distance by four, resulting in 1080 km.