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____ [38]
2 years ago
13

A construction crew is lengthening a road that originally measured 53 miles. The crew is adding one mile to the road each day.

Mathematics
1 answer:
natta225 [31]2 years ago
7 0

Answer:

Equation: 1=1

Length of the road after 16 days: 16 miles (if not adding to 53. if adding to 53, the answer is 69)

Explanation:
If they add one mile of road every day, its 1(mile) = 1(day.
Since its one mile every day, 16 days is 16 miles. Adding 53 + 16 = 69

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A travel trailer is bought at the price of $35,000. The value decreases at the rate of .25 every year (t). The exponential expre
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The answer might be D I don’t understand either
3 0
4 years ago
Parker is going to attend a four-year university that has an annual tuition of $16,110. He has $45,800 in savings and has a gran
Svetlanka [38]

Answer:

$13,640

Step-by-step explanation:

money that need to pay for the tuition for all four years

=$16,110×4

=$64,440

the money he had

=$45,800+$5,000

=$50,800

the difference

=$64,440-$50,800

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3 0
3 years ago
Questions 2-7 will all be in regards to this data set:Observation X Y1 20 302 23 353 28 404 26 385 24 376 32 457 35 508 24 349 3
Tomtit [17]

Answer:

r =0.4437

Step-by-step explanation:

We have the follwoing dataset:

X: 20,23,53,4,24,32,35,24,31,23

Y: 30,35,40,38,37,45,50,34,42,32

n=10

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.

And in order to calculate the correlation coefficient we can use this formula:

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}  

For our case we have this:

n=10 \sum x = 269, \sum y = 383, \sum xy = 10609, \sum x^2 =8645, \sum y^2 =15007  

Th excel figure attached shows the calculations for each sum.

r=\frac{10(10609)-(269)(383)}{\sqrt{[10(8645) -(269)^2][10(15007) -(383)^2]}}=0.4437  

So then the correlation coefficient would be r =0.4437

3 0
4 years ago
If roots of a quadratic equation are real and equal, then which of the
ycow [4]

Answer: where are the options??

Step-by-step explanation:

4 0
3 years ago
WILL GIVE BRANLIEST! pls help thank u sm!! :-) u are all amazing
34kurt

Answer:

A.)

Step-by-step explanation:

A.)

7 0
3 years ago
Read 2 more answers
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