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

and <span>

You can use this to find d
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Now you can just solve using the equation normally.
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The answer is C. 158
Answer:
- a. She needs to hang each triangle from its center of gravity or centroid, which is the point at which the three medians of the triangle intersect.
Step-by-step explanation:
- Medians meet at a centroid of the triangle. The centroid is the triangle's center of gravity.
5=1/2v-3
5=1/2v
+3 +3
8=1/2v
/1/2 /1/2
16=v
Answer:
7
Step-by-step explanation:
If range is 6 then the difference between highest and lowest is 6 so 1 + 6 = 7 so b is equal to 7.