Answer:
After 17 hours there will be about 143 bacteria.
Step-by-step explanation:
Given that in a lab experiment, 80 bacteria are placed in a petri dish, and the conditions are such that the number of bacteria is able to double every 19 hours, to determine how many bacteria would there be after 17 hours, to the nearest whole number, the following calculation must be performed:
80 x ((2/19) x 17) = X
80 x (0.1052 x 17) = X
80 x 1.7894 = X
143.15 = X
Thus, after 17 hours there will be about 143 bacteria.
Think about the individual parts of the expression.
5b - a
5b equals 625. Therefore, 5b - a = 625 - a
Now you have 625 - a.
If 5a = 25, then what does "a" equal? Divide 5 from both sides to find out.
5a/5 = 25/5
a = 5
Therefore, 625 - a = 625 - 5
625 - 5 = 620
620 is the answer.
⇒To get the difference we subtract.
⇒To get the sum we add.
Goodluck!!
Answer:
C. (6,0,-25) on edg2020
just took it
Step-by-step explanation: