Answer:
5
Step-by-step explanation:
an = an_(n - 1) - 5
a2 = a1 - 5
a2 = 20 - 5
a2 = 15
===========
a3 = a2 - 5
a3 = 15 - 5
a3 = 10
============
a4 = a3 - 5
a4 = 10 - 5
a4 = 5
Answer:
144
Step-by-step explanation:
Because when you find the area of a square, the sides of a square is the same, you just multiply 12 and 12, because area is just 2 sides of the shape! Your welcome :D
The common ratio is 2, so the sum is
.. a1*(r^n -1)/(r -1)
.. = 4*(2^9 -1)/(2 -1)
.. = 4*511
.. = 2044
The sum of the sequence is 2044.
Answer:
6y^3 + 12y^2 - 12y - 4
Step-by-step explanation:
So, you would multiply each in first equation for the second equation, you will got:
= 6y^2 * 6y + 6y^2 * 2 - 2*6y - 2* 2
= 6y^3 + 12y^2 - 12y -4
This would be the final expression
Hope this help you :3
Answer:
4
Step-by-step explanation: 4*4 is 16. 4^2 is 16. So the square root of 16 is 4.