Answer:
We can say that the no.s are X and form the following equation:
X × (X + 2) = 440
2x = 440-2=438
x = 438/2
x= 219
x+2=219+2= 221
A₁ = 9
a₂ = 9+2 → a₂ = a₁ + 2. Since it's an AP, d, the common difference is 2
1) Then the recursive formula is :
a(n) = a(n-1) + 2
2) Explicit formula:
It's an AP, with first term a₁, d= common difference and n = number of term, which is the number of rows in this problem.
the value of the nth term is given by the formula is:
value of nth term = a₁ + (n-1).d
3) Number of seats in the 12th row:
9 + (12-1).2 = 31 seats
Answer:
Step-by-step explanation:
y intercept is 0, 15
x intercept is -40,0
15/40 = 3/8
y = 3/8 x + b
15 = b
y = 3//8x + b
Could u send me a bigger picture so I can help!
Answer:
<em>7√2 units </em>
Step-by-step explanation:
( , ) and ( , )
d =
( - 2 , - 1 )
( 5 , 6 )
d = = <em>7√2 units</em>