Answer:
The answer is 7x^3 - 8x^2 - 20x + 3
Step-by-step explanation:
Simplify the expression.
Hoped this helped!
Answer:
180 because fifty is half of a whole so 90*2=180
Step-by-step explanation:
Mass of an element = 310 grams
Percentage of the element that will decay in a minute = 5.7%
Quantity of the element that will decay in one minute :



Thus, 17.67 grams of the element will decay every minute.
Quantity of element that will decay after nine minutes :


Thus, 159.03 grams of the element will decay after 9 minutes.
Quantity of element that will remain after 9 minutes :


Thus, 150.97 grams of the element will remain after nine minutes.
We can round off 150.97 to 151.00.
Therefore, <u>151.00 grams</u> of the element will remain after 9 minutes.