Answer:
balanced reaction: <u>1</u> C3H8 + <u>5</u> O2 ----> <u>3</u> CO2 + <u>4</u> H2O
Answer: 
<u>Step-by-step explanation:</u>
To find the tangent, you need to find the derivative with respect to x.
Then substitute x = 1 into the derivative.
Given: 0 = 2x² - xy - y²
Derivative: 0 = 4x - y' - 2yy'
Solve for y': 2yy' + y' = 4x
y'(2y + 1) = 4x


The answer would be 25 because all of the others are prime numbers, meaning they can only be divided by themselves and 1. So it would be C.
Answer:
Test statistic:
z = (0.67 - 0.63) / 0.033 = 1.21
p - Value = P(z > 1.21) = 0.106
My conclusion: Fail to reject null hypothesis
No, there is no evidence of a difference
3-4 = -1
Hope this helps!
:)