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3 years ago

PLS HELP WILL MARK BRAINLIEST AND SHOW WORK/DESCRIBE

Mathematics

1 answer:

scoundrel [369]3 years ago

7 0

Answer:

Step-by-step explanation:

20 + 15 + 15 + 15

Y = 15x + 5

X = each day (after the first) you are charged $15

15 + 5 is charged in the first day = 20

Y = Total

Your Y intercept is 5

Your slope is 15

Don’t go into negatives because money and time can’t be negative

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8 - 5x3, for x = -1<br><br> The 3 after the x is a exponent plz help!!!!

zvonat [6]

Answer:

Step-by-step explanation:

$8-5x^3$ , if x = -1

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3 years ago

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Sergio039 [100]

Answer:

{x | x<5/4}

Step-by-step explanation:

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2 years ago

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A. What is the explicit definition for this sequence?<br><br>b. How far does she run on day 19?

creativ13 [48]

Answer:

(a) $a_n=1+\frac{1}{6}(n-1)$

(b) 4 miles

Step-by-step explanation:

Given:

The sequence of run is an arithmetic sequence.

Miles traveled on day 1 = 1 mile

Miles traveled on day 7 = 2 miles

(a).

Explicit formula for an arithmetic sequence is given as:

$a_n=a_1+(n-1)d\\a_n\to n^{th}\ term\\a_1\to first\ term\\n\to number\ of\ terms\\d\to \textrm{common difference}$

Here, $a_1=1,a_7=2$

So,

$a_7=a_1+(7-1)d\\2=1+6d\\6d=2-1\\d=\frac{1}{6}$

Therefore, the explicit definition of the above sequence is given as:

$a_n=1+\frac{1}{6}(n-1)$

Where, $a_n$ is the miles covered on $n^{th}$ day.

(b)

In order to find the distance covered by her on day 19, we plug in 19 for n in the above formula. This gives,

$a_{19}=1+\frac{1}{6}(19-1)\\\\a_{19}=1+\frac{1}{6}(18)\\\\a_{19}=1+3=4\ mi$

Therefore, the number of miles covered by her on day 19 is 4 miles.

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3 years ago

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galina1969 [7]

Answer:

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Step-by-step explanation:

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3 years ago

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astraxan [27]

Answer:

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3 years ago

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