Answer:
volume of rectangular prism =l×w×h
volume of rectangular prism =4cm×2cm×7cm
volume of rectangular prism =56cm³
Question:
which conclusion can be made?
a. a || b
b. c || d
c. c _|_ a
d. b _|_ d
Answer:
a. a || b
Answer:
The population is decaying at a rate of 11% per minute.
Step-by-step explanation:
We have that € is the inicial sample of algae cells, and f(t) shows the sample after t minutes.
As € is multiplied by a number between 0 and 1, that means the sample will decrease it's size as the time passes.
The inicial sample is €, and after 1 minute the sample will be 0.89€, that is, it will decrease by 0.11€ or 11% of the previous sample.
So the correct option is:
The population is decaying at a rate of 11% per minute.
y = x² + 3x - 7
y - 5x + 8 → y = 5x - 8
5x - 8 = x² + 3x - 7 <em>substituted "y" in first equation with "5x - 8"</em>
0 = x² - 2x + 1 <em>subtracted 5x and added 8 to both sides</em>
0 = (x -1)(x - 1) <em>factored x² - 2x + 1 </em>
x = 1 <em>solved for "x"</em>
Now plug that "x = 1" into "y = 5x - 8" → y = 5(1) - 8 → y = 5 - 8 → y = -3
Solution is (1, -3) so there is only one solution.
Answer: C
