a[25]=1.7, d=0.6
In general,
a[n] = a[1] + d(n-1)
1.7 = a[25] = a[1] + 0.6(25 - 1)
a[1] = 1.7 - 0.6(24) = -12.7
a[n] = -12.7 + 0.6(n - 1)
Answer a[1]=-12.7
Filling in the boxes,
a[1]=-12.7, a[2]=-12.1, a[3]=-11.5, a[4]=-10.9, a[5]=-10.3, a[6]=-9.7
check that last one with the formula, a[6]=-12.7-.6(6-1) = -9.7, good
we're asked for a recursive formula, which is easier,
Answer: a[n] = a[n-1] + 0.6
---------------------
a[n] = a[1] + d(n-1)
a[23] = 21 = a[1] + 22d
a[43] = 61 = a[1] + 42d
Subtracting,
40 = 20d
d = 2
21 = a[1] + 22(2)
a[1] = 21 - 44 = -23
Answer: a[1] = -23, a[n] = a[n-1] + 2
Check: a[n]=-23 + 2(n-1) at n=43 gives a[43]=-23 +2(42) =61, good
Answer:
i need points
Step-by-step explanation:
You mean 243 to the nearest hundred?
It's 200
Rule: (So that you can do it yourself) ^.^
If it's 4 or below, stay still
If it's 5 or above, add one
<span>3(x+2)= 4x+1 |Given
3x+6= 4x+1 |Distributive
−x+6= 1 |SPOE (Subtraction Property of Equality)
−x= −5 |SPOE
x=5 |MPOE (Multiplication Property of Equality)</span>
Answer:
Step-by-step explanation: