Answer:
36 cm squared is the anwer
Answer:
x^2 -2x+1
Step-by-step explanation:
(x - 1 )(x - 1)
FOIL
first: x*x = x^2
Outer: -1x
inner: -1x
Last: -1*-1 = 1
Add these together
x^2 -1x-1x+1
x^2 -2x+1
All I can find on this is that it would be 10/16 but thats not an awnser. hmmm
Answer:
B. 8
Step-by-step explanation:
simply just plug the possible answers into the equation for x. plugging in 7 comes out to 39, or one short, so 8 is the answer because the question asks for the fewest ads to run to get the 40 customer goal
Let x be the number of mm of pure alcohol to be added:
I will add the mm to express the volume in mm
100mm.(19%) + (100%).x mL = (100 mL+x mL).(40%).
Now right again without the %
100.(0.19) + x.(1) = (100+x).(0.4)
19 + x = = 40 + 04x
x - 0.4x = 40 - 19
0.6 x = 21
x = 21/0.6 and x = 35 mL. This te quantity of pure alcohol should to be added to get a solution at 40%.
