An arithmetic sequence is an ordered list of numbers where the next number is found by adding on to the last number (ex: 2,5,8,11... is a sequence where 3 is added on to find the next number).
The equation for an arithmetic sequence is


is the "n-th" number in the sequence (ex: is the first term in the sequence)
d is the number you add (common difference) to find the next number
The first number in the sequence is 47 so

<span>d=-2 because the question gives you that
</span>

<span>

</span><span>

</span><span>

</span><span>

</span>
The answer is A. -9.
<u> </u>
<span>The answer is C. 158</span>
For the second one, it gives you

and <span>

You can use this to find d
</span><span>

</span><span>

</span><span>

</span><span>

</span><span>

</span><span>

</span>
Now you can just solve using the equation normally.
<span>

</span><span>

</span><span>

</span><span>

</span><span>

</span>
The answer is C. 158
Hey i think u forgot to insert the picture of the triangle lol
The height of plant y =x+25
DCA is 116 because x=29, when you plug 29 into x you get 116
Answer:
155.25= 12
Step-by-step explanation:
17/2*2*1/2 = 12
17*1/2 = 12
8 1/2 17/1* 1/2
8*2+1 17*1/1*2
2 17*1/1*2
16+1 17/1*2
2 17/2
17 8.5=12
2