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devlian [24]
3 years ago
6

A phone was purchased for $318. Each year the value is 1/2 of its value the previous year. Write a function that describes the v

alue of the phone, in dollars, as a function of the time in years,t, after the initial purchase?
Mathematics
1 answer:
zubka84 [21]3 years ago
8 0

Answer:

y=318(1-0.5)^x

Step-by-step explanation:

x represents the amount of years and y is the ending price

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Determine the intercepts of the line. y = 5 x − 1 3 y=5x−13
sweet-ann [11.9K]
Y-intercept = -13
x-intercept = 2.6 or 2 3/5
-13 is the y-intercept. In the equation, y=mx+b, b is the y-intercept. Looking at the equation, y=5x-13, we can see that -13 is in the place of b, therefore -13 is the y-intercept.
() is the x-intercept. To find the x-intercept, you need to replace values into the equation. Since the coordinates for the x-intercept consist of y being 0, you must replace y in the equation. with 0.
0=5x-13
Get rid of the -13 by adding it onto both sides. -13 is negative and the opposite of a negative is positive, thus making you add to get rid of -13.
0=5x-13
+13 +13
13=5x
Now you divide 5 from both sides to get rid of 5. The opposite of multiplication is division, so you must divide the 5 from 5x to isolate the x.
13/5=5x/5
2.6 or 2 3/5=x
Therefore the coordinates (2.6,0) represent the x-intercept, or just 2.6.

I hope this helped.
6 0
3 years ago
What is the perimeter of the figure?"
maksim [4K]

Answer:

14

Step-by-step explanation:

Perimeter= 4× 3.5 in

=14 in

5 0
3 years ago
Read 2 more answers
Answer correctly for brainliest +10 points!
Natalka [10]
The top right corner is the table that represents a linear function because when x goes up by 1 y continuously goes down by 2 and stays consistent
7 0
3 years ago
Logic You find that the product of 93 and 6 is 558. He can you use addition to check your answer ? How can you use division yo c
frozen [14]
Addition: 93 can be added six times to determine the total

and division can be used to check your answer since it's the inverse operation of multiplication...take your solution of 558 and divide it by 6 (or 93) to see if 93 times six equals 558
3 0
3 years ago
Can you please help me???
Lapatulllka [165]

Answer:

Your answer of coplanar is correct

Step-by-step explanation:

A skew line are 2 lines that aren't parallel and do not intersect.

Since there are arrows on either end of AC and RS , it mean those lines continue, and they will eventually intersect.

It is also not the other 2 clearly, since they do intersect and they don't make a 90° angle

So yes,

The answer is Coplanar

Hope this helps.

4 0
2 years ago
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