<u>n=6</u>
Answer:
Solution given:
The coefficient of x^2=60
we have,
we get x² in 3rd term,so
3rd term of (1+2x)^n is C(n,2)*1^n-2)(2x)^2=C(n,2)4x²
since 1^n is 1.
we have a coefficient of x^2 is 60, so
C(n,2)4=60
C(n,2)=60/4
=15
=15
n(n-1)=15*2
n^2-n=30
n^2-n-30=0
doing middle term factorization
n^2-6x+5x-30=0
n(n-6)+5(n-6)=0
(n-6)(n+5)=0
either n-6=0
n=6
or,
n+5=0
n=-5 since n>0
so neglected.
<u>So the value of n is 6.</u>
Step-by-step explanation:
Answer:
I dont do graphs anymore that is 9th grade stuff B)))
Step-by-step explanation:
Answer:
The equation which describe this function is 5x + 11y = 37
Step-by-step explanation:
<u>To find the slope</u>
slope = (y₂ - y₁)/(x₂ - x₁)
slope = (13 - 2)/(-2 - 3) = 11/-5
<u>To find the equation</u>
(x - 3)/(y - 2) = -11/5
5(x - 3) = -11(y - 2)
5x -15 = -11y + 22
5x + 11y = 22 + 15
5x + 11y = 37
Therefore the equation which describe this function is
5x + 11y = 37
Answer:
1,3,9,27
Step-by-step explanation:
