<span>Let the age of the 4th person be F
Sum of the 1st four in line: 4(23), or 92
Sum of 1st 3: 92 - F (excludes the 4th person's age)
Sum of the last 3 in line: 3(34), or 102
</span><span>Sum of last 2: 102 - F (excludes the 4th person's age)
Sum of all 6: 6(27), or 162 (INCLUDES 4th person's age)
We now get: F + 92 - F + 102- F = 162
- F + 194 = 162
- F = 162 - 194
- F = - 32
F, or 4th person's age = -32/-1, or 32
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9 * x = 9x
9 * 5 = 45
9 * 8y = 40y
9x + 45 + 40y
9x + 40y + 45
Answer: x = 64
Step-by-step explanation:
First you need to know that if we have: 
this is equal to 
So, 
can be rewritten as: 
can be rewritten as: 
and why did I do this? you may ask. This way I can rewrite the exponent as a square root, as following;
The property says that: ![\sqrt[n]{x^m}=x^\frac{m}{n}](https://tex.z-dn.net/?f=%5Csqrt%5Bn%5D%7Bx%5Em%7D%3Dx%5E%5Cfrac%7Bm%7D%7Bn%7D)
So, we can rewrite our operation as;
![8=\sqrt[]{x}](https://tex.z-dn.net/?f=8%3D%5Csqrt%5B%5D%7Bx%7D)
Now let's raise both sides to the power of 2, to get rid of the square root.
![(8)^2=(\sqrt[]{x})^2](https://tex.z-dn.net/?f=%288%29%5E2%3D%28%5Csqrt%5B%5D%7Bx%7D%29%5E2)
A) 20%
b) 83%
hope I helped ^^
Answer:
It's the distributive property of algebra as applied to parentheses
Step-by-step explanation:
(see attached graphic)
