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gladu [14]
3 years ago
10

The association placed a track marker on the ground every four hundred yards. Every 900 yards, the association put up a water st

ation. What is the shortest distance a runner will have to travel to see a water station and a track marker in the same location?
Mathematics
1 answer:
Fittoniya [83]3 years ago
5 0

Answer:

ima take my dagn points back smh dont answer on my questions if ur not gonna do them and say thanks ma'am like wt dude such a lame move god

Step-by-step explanation:

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1. The explicit formula an = 2–5(n-1) represents an arithmetic sequence. Write the recursive
Ivahew [28]

Answer:

a_n=2,\:a_n=a_{n-1}-5

Step-by-step explanation:

If you map the sequence out, you get the following values:

a = 1, a(n) = 2

a = 2, a(n) = -3

a = 3, a(n) = -8

As you can see, the first term is 2 and the sequence is decreasing by 5 each time. Therefore, the answer is D.

3 0
3 years ago
(2x)/(x-1)<br> Find the derivative using quotient rule
irina1246 [14]

Answer:

Step-by-step explanation:

see pic below for quotient rule

\frac{(2x)'(x-1)-(2x)(x-1)'}{(x-1)^2}=\frac{2(x-1)-2x}{(x-1)^2}=\frac{2x-2-2x}{(x-1)^2}=-\frac{2}{(x-1)^2}

5 0
3 years ago
In a survey, 27 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped
tatiyna

Answer: (29.4, 32.6)

Step-by-step explanation:

From the question, we know that

Sample size (n) = 27

Sample mean (x) = $31

Sample standard deviation (s) = $3

We are to construct a 99% confidence interval interval for average amount spent on gift.

The formulae for constructing a 99% confidence interval for population mean is given as

u = x + tα/2 × s/√n...... For upper limit

u = x - tα/2 × s/√n...... For lower limit

tα/2 is the critical value for a 2 tailed test. This value of gotten from a t distribution table by checking the degree of freedom ( 27 - 1 = 26) against the level of significance ( 100% - 99% = 1%).

Hence tα/2 = 2.779

Let us substitute our parameters and solve

For lower limit

u = 31 - 2.779 × 3/√27

u = 31 - 2.779 ( 0.5773)

u = 31 - 1.6045

u = 29.4

For upper limit

u = 31 + 2.779 × 3/√27

u = 31 + 2.779 ( 0.5773)

u = 31 + 1.6045

u = 32.6

Hence the 99% confidence interval for population mean is given as 29.4, 32.6

6 0
3 years ago
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What are three types of life cycle
SpyIntel [72]

Answer: three type of life cycles are Haploid life cycle,Diploid life cycle, and alternation of generations.

3 0
3 years ago
Use the given information to find the new price.<br><br> Food bill: $25<br><br> Sales tax: 6%
Lana71 [14]
29.1 dollars with sales tax
3 0
4 years ago
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