9514 1404 393
Answer:
C
Step-by-step explanation:
The subscript (n-1) is used to indicate the term previous to term (n). In this sequence, each term is 0.5 more than the previous term, so the recursive relation ...
is the appropriate one. This matches choice C.
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<em>Additional comment</em>
Of course, if the next term is 0.5 more than the last, then the previous term is 0.5 less than the present one. The sequence can be described in this "backward" fashion by the recursive relation of choice A. While that <em>does work</em> to describe the sequence, it is usually <em>not</em> the form we desire for a recursive relation.
Answer:
The answer is 0.2mile
Step-by-step explanation:
The vertical height of the building, which is 630ft, is opposite the angle of elevation (30°).
While the horizontal distance to the tower is adjacent to the building. So, we take the tangent of the angle of elevation in terms of this unknown distance (x) and the vertical height.
So,
Tangent = opposite ÷ adjacent
Tan30° = 630ft ÷ x
x = 630ft ÷ tan30°
x = 1091.192ft
But,
1 mile = 5,280ft
1091.192ft = (1/5280) x 1091.192
= 0.2mile
Answer:
ly = 14.75
Step-by-step explanation:
4ly – 51 – 8 = 0
4ly - 59 = 0
combine 59 and 0
4ly = 0 + 59
4ly = 59
divide by 4
4ly/4 = 59/4
ly = 14.75
Answer:
37 inches.
Step-by-step explanation:
To find the answer, we can simply divide the total amount of fabric, 74 inches, by 2. This will give us 2 equal pieces.
74/2=37
The length of each piece is 37 inches.
Hope this helps!
Let the number be x.
First student increased the number by 23, therefore
⇒ x + 23
Second student decreased the number by 1, therefore
⇒ x - 1
The first student's result was 7 times greater than the result of the second student's, therefore
⇒ x + 23 = 7(x - 1)
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Solve for x:
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x + 23 = 7( x- 1)
x + 23 = 7x - 7
6x = 30
x = 5
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Answer: The number on the board is 5.
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