Step-by-step explanation:
the derivative of an inverse function is
1/f'(f^-1(x))
f'(x) = -6x²
f^-1(7) is solving the original function equation for x under the knowledge that y = 7
7 = 5 - 2x³
2 = -2x³
-1 = x³
=>
x = -1
f'(-1) = -6×(-1)² = -6×1 = -6
so,
(f^-1)'(7) = -1/6
2.6 repeating as a fraction would be 2 2/3
Answer:
the answer ur looking for is 270
Answer:
Yes
Step-by-step explanation:
First add what she needs, and compare it to what she bought.
3/4 + 3 1/2 = 4 1/4. Compare 4 1/4 to 4 2/3. To do this, make them into singular fractions (not mixed number fractions), so you get 17/4 and 14/3. Then cross multiply (first number's nominator times the 2nd number's denominator) so 17x3=51. Then do the other sides (2nd number's nominator times the 1st number's denominator), so 14x4=56. Since 56 is greater than 51, then the 2nd number (14/3 or 4 2/3) is largest. Meaning that Maria has MORE than enough paint.
