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fenix001 [56]
2 years ago
13

The first five terms of a sequence are 5, 4, 3, 2, 1. What is the explicit formula for the sequence?

Mathematics
1 answer:
kogti [31]2 years ago
8 0

Answer:

6-n

Step-by-step explanation:

The first term, a is 5 and the common difference is - 1.

So an=a+(n-1)d, an=5+(n-1)(-1)=5-n+1=6-n. Answered by Gauthmath

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What is the equation of the line that passes through points (-3, 0.5) and (3, -0.5)
marissa [1.9K]

Answer:

y = (-1/6)x

Step-by-step explanation:

As we move from  (-3, 0.5) to (3, -0.5), x increases by 6 and y decreases by 1.

Hence, the slope of this line is m = rise / run = -1/6.

Starting with the slope-intercept form of the equation of a straight line, we have:

y = mx + b.  We substitute 0.5 for y, -3 for x and -1/6 for m, obtaining:

0.5 = (-1/6)(-3) - b, or:

0.5 = 0.5 - b.  Then b = 0, and the desired equation is

y = (-1/6)x

7 0
2 years ago
Which statement is correct about relations and functions?
aniked [119]

Definition 1: A relation is any subset of a Cartesian product. For instance, a subset of A\times B, called a "binary relation from A to B," is a collection of ordered pairs (a,b) with first components from A and second components from B, and, in particular, a subset of A\times A is called a "relation on A."

Definition 2: A function is a relation that associates each element x of a set X to a single element y of another set Y (possibly the same set). A function is uniquely represented by its graph which is the set of all ordered pairs (x, f (x)).

From these definitions you can see that every function is a relation from X to Y, but not via versa (because you can consider relation \{1\}\times \{2,3\} - here for one x exist two y).

Answer: Correct choice is B.

7 0
2 years ago
Read 2 more answers
Pls help I will give you 15 points
STALIN [3.7K]

Answer:

Ana still needs to read 1/5 of th journal

8 0
2 years ago
50 POINTS PLS HELP
egoroff_w [7]

Answer:

3

Step-by-step explanation:

find value at  12 =12

find value at 10 =    6

 so it changes   + 6    for a change from 10 to 12

6/2 = 3  

4 0
2 years ago
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John goes from a sauna at 115 Fahrenheit to an outside temperature of -30 Fahrenheit. What is the change in temperature?
IRINA_888 [86]

Answer: 115 - (-30) = 115 + 30 = 145 degrees change

Step-by-step explanation:

7 0
2 years ago
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