Answer:
21.
Step-by-step explanation:
Answer:
9 terms
Step-by-step explanation:
Given:
1, 8, 28, 56, ..., 1
Required
Determine the number of sequence
To determine the number of sequence, we need to understand how the sequence are generated
The sequence are generated using
Where n = 8 and r = 0,1....8
When r = 0
When r = 1
When r = 2
When r = 3
When r = 4
When r = 5
When r = 6
When r = 7
When r = 8
The full sequence is: 1,8,28,56,70,56,28,8,1
And the number of terms is 9
14+-86=-72. That is the change in level if you needed it.
subtract 75 from 120
120-75 =45 more campsites
Answer:
Length=17
Width=4
Step-by-step explanation:
Length=x
Width=2x-30
x(2x-30)=68
2x²-30x=68
2x²-30x-68=0
2(x²-15x-34)=0
2(x+2)(x-17)=0
So x equals either 17 or -2. Since it can’t be -2, x=17
Length=x=17
Width=2x-30=2*17-30=34-30=4