
Step-by-step explanation:

Answer:
See Explanation
Step-by-step explanation:
Required
Expression for area of triangle
This is calculated using

Assume that:

The equation becomes

Answer: 35
the age of Roberto is x (x > 3)(x ∈ N)
because Roberto is 3 years older than Carolyn => the age of Carolyn is x - 3
in 7 years, the age of Roberto is x + 7; the age of Carolyn is x - 3 + 7 = x + 4
because In 7 years the sum of their ages will be 81 =>
x + 7 + x + 4 = 81
⇔ 2x + 11 = 81
⇔ 2x = 70
⇔ x = 70/2 = 35
=> the age of Roberto is 35
Step-by-step explanation:
Hello from MrBillDoesMath!
Answer: 2 ^ -4 ( = 1/16)
Discussion:
- 4 log {8} 2 {8} is used instead of subscript notation
Basic property of logarithms is that exponents become multipliers and vice versa:
-4 log {8} 2 = log {8} (2^ -4)
Thank you,
MrB
Answer:
B) ![\sqrt[4]{80} ^x](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7B80%7D%20%5Ex)
Step-by-step explanation:
The given expression is 
It is 4th root. because 1/4 represents the 4th root.
So, ![\sqrt[4]{80} ^x](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7B80%7D%20%5Ex)
Therefore, the answer is B) ![\sqrt[4]{80} ^x](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7B80%7D%20%5Ex)