Answer:
23+ 37 = 42
the EG is congruent to the FA and therefore have to dividee the value to get 302
Answer:
3.75 quarts, rounded to 3.8 quarts
Step-by-step explanation:
3 quarts of solution is 10% antifreeze, so 0.3 quarts are already antifreeze, and 2.7 quarts are not.
a(the antifreeze we already have)+x(what we're going to add)= 1.5*2.7
Let me explain. If we have 60% antifreeze, 40% is not. 60/40=1.5
Substitute a for 0.3
0.3+x=4.05 Subtract 0.3 from both sides
x=3.75
The expression re-written: 3(2) - 4(3)
First, we multiply (PEMDAS)
3 * 2 = 6
4 * 3 = 12
6 - 12 = -6
Answer: - 6
Point a is the correct answer for this question
Answer:
![(a)\ f^{-1}(-15) = -6](https://tex.z-dn.net/?f=%28a%29%5C%20f%5E%7B-1%7D%28-15%29%20%3D%20-6)
![(b)\ f^{-1}(4) + f(9)=0](https://tex.z-dn.net/?f=%28b%29%5C%20f%5E%7B-1%7D%284%29%20%2B%20f%289%29%3D0)
Step-by-step explanation:
Given
The attached table
![(a)\ f^{-1}(-15)](https://tex.z-dn.net/?f=%28a%29%5C%20f%5E%7B-1%7D%28-15%29)
This represents an inverse function.
So, we look into x row for its value.
i.e.
![f^{-1}(-15) = -6](https://tex.z-dn.net/?f=f%5E%7B-1%7D%28-15%29%20%3D%20-6)
![(b)\ f^{-1}(4) + f(9)](https://tex.z-dn.net/?f=%28b%29%5C%20f%5E%7B-1%7D%284%29%20%2B%20f%289%29)
Just like (a)
---- by looking into the x rows
![f(9) = 11](https://tex.z-dn.net/?f=f%289%29%20%3D%2011)
So:
![f^{-1}(4) + f(9)=-11 + 11](https://tex.z-dn.net/?f=f%5E%7B-1%7D%284%29%20%2B%20f%289%29%3D-11%20%2B%2011)
![f^{-1}(4) + f(9)=0](https://tex.z-dn.net/?f=f%5E%7B-1%7D%284%29%20%2B%20f%289%29%3D0)