Answer:
an = -6n + 5.
Step-by-step explanation:
This is an arithmetic sequence with first term a1 = -1 and common difference d = -6
an = a1 + d(n-1)
an = -1 + -6(n - 1)
an = -1 -6n + 6
an = -6n + 5.
Step-by-step explanation:
2(5) - 4(1) +3 =9
10 - 4 +3 = 9
12 is 1 more than 11
12 is one less than 13
this ok?
Let one of the number be x.
<em>They have a difference of 0.7</em>
⇒ the other number is x - 0.7
<em>Their sum is 1</em>
⇒ x + (x - 0.7) = 1
<em>Solve x:</em>
x + (x - 0.7) = 1
x + x - 0.7 = 1
2x = 1.7
x = 0.85
x = 0.85
x - 0.7 = 0.85 - 0.7 = 0.15
Answer: The two numbers are 0.15 and 0.85