Total is 45-5 = 40, because it starts at 5, tricky haha
Area in interest is 30-20 = 10
What percentage is 10 of 40?
10/40 = 0.25
0.25*100 = 25%
Brainiest
X + 3= 5
The answer to this equation is simply 2
to do this:
subtract 3 from both sides of the equation.
3 cancels out, and you are left with this
x=2
so, the answer is x=2
or 2
Hope this helped!
Answer:
(a) 
(b) nth term: 
Step-by-step explanation:
Solving (a)
Given
The first 3 terms.
When n = 1
When n = 2
When n = 3
So, the first three terms are:
Solving (b)
Given
Required
The nth term
The sequence is arithmetic.
So, first calculate the common difference (d)
The nth term is then calculated as:
Where
So:
and
Collect like terms
75n-36=21n^2 rearrange so we have an equation equal to zero...
21n^2-75n+36=0 divide whole equation by 3
7n^2-25n+12=0 now factor...
7n^2-21n-4n+12=0
7n(n-3)-4(n-3)=0
(7n-4)(n-3)=0
Since this is an integer 4/7 is extraneous.
The integer value is 3
=25x2+y2+z2−10xy−2yz+10xz
