<span>Using
the points (2, 45) (4, 143) and (10, 869), we can plug them into the
following system of 3 equations using the y = ax^2 + bx + c format:
45 = a(2)^2 + b(2) + c
143 = a(4)^2 + b(4) + c
869 = a(10)^2 + b(10) + c
which simplifies to:
45 = 4a + 2b + c
143 = 16a + 4b + c
869 = 100a + 10b + c
Solving the system, we get a = 9, b = -5, and c = 19. Thus the equation is:
c(x) = 9x^2 - 5x + 19
If you have a TI graphing calculator, you can also enter the points by
pressing Stat -> Edit and enter (2, 45) (4, 143) and (10, 869) into
it. Go back and calculate the QuadReg of the points from the Calc tab
and it will give you the same answer.
Now that we know the function that will produce the price of production
for any number of calculators, plug in x = 7 and it will give you the
price to produce 7 calculators.
c(x) = 9x^2 - 5x + 19
==> c(7) = 9(7)^2 - 5(7) + 19
==> c(7) = 441 - 35 + 19
==> c(7) = 425
Therefore, it costs $425 to produce 7 calculators.
Hope this helps.
</span>
1200/200 in a simplified form is
3/5
Answer:
C. Yvette's independent and dependent probabilities are equal.
Step-by-step explanation:
<em>To figure this out we can use a drawing & word</em>
<em>Draw 2 marbels purple </em>
<em>Then figure out Yvette's independece & Dependece by looking at the marbels you've drawn in a notebook or scrap paper</em>
<em>Use a pencil so you erase what you put down on the paper the click the answer.</em>
Good luck Hope you get it right
remember math is math it doesn't have to be perfect as long as you keep trying. Practice makes perfect.
Hope this helps
Answer:
8.1 inches
Step-by-step explanation:
Area of a triangle = ½ × base × height = Area
Rearranged =
Base is the length by the way.
=8.1 inches
The answer is letteer C. You just have to multiply 9 and pi
