15=5/6x when x equals her brother’s age. Solve this equation to get that the brother is 18.
Answer:

Step-by-step explanation:
From the question, we understand that:
---- First Term
---- Common difference
Required
Determine the nth term
nth term of a sequence is calculated using:

Substitute values for
and 

Open bracket

Collect Like Terms:


Hence, the nth term of the sequence is:

Answer: All real numbers are solutions
Step-by-step explanation:
first lets distributive the 2(4x+1) to get 8x+2 because 2*4x= 8x and 2*1= 2
now the equation is 8x+2-5x+2= 3x+4
(COMBINE LIKE TERMS)
8x-5x=3x
2+2= 4
now the equation is 3x+4= 3x+4 (this means all real nubers are solutions)
Answer:
C = 10π ft
Step-by-step explanation:
the circumference (C) of a circle is calculated as
C = 2πr ( r is the radius )
to find r use the area formula, that is
A = πr² = 25π ( divide both sides by π )
r² = 25 ( take square root of both sides )
r =
= 5
then
C = 2π × 5 = 10π ft
Answer:
a quantity representing the power to which a given number or expression is to be raised, usually expressed as a raised symbol beside the number or expression
Step-by-step explanation:
A tip would be to watch a video on exponents and pemdas, they can be really helpful!
Hope this helps!