Answer:
your answers are correct
Step-by-step explanation:
You can ise repeated reasonings
Answer:YYYYYYYYY
Step-by-step explanation:
They give you the equation: 2(5x-2)+2(3x+1)
and they give you x. x=4
just substitute and solve: 2((5•4)-2)+2((3•4)+1)=2(20-2)+2(12+1)=2(18)+2(13)=36+26=62
Answer:
<em>a7=-1</em>
Step-by-step explanation:
<em>Arithmetic Sequences</em>
The arithmetic sequences can be identified because each term n is obtained by adding or subtracting a fixed number to the previous term n-1.
The equation to calculate the nth term of an arithmetic sequence is:
We know: a12=29, a16=53, now we use the above equation for n=12 and n=16:
Simplifying both equations:
Subtracting:
Solving:
r=24/4
r=6
The 7th term can be found as 9 terms before the 16th:
Thus: a7=-1