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3 years ago

I really need help

Mathematics

1 answer:

AleksAgata [21]3 years ago

6 0

Answer:

There is a positive correlation in the data set.

General Formulas and Concepts:

Statistics - Scatterplots

Positive Correlation - an upwards trend in the data set
Negative Correlation - a downwards trend in the data set
No Correlation - an undeterminable correlation in the data set

Step-by-step explanation:

According the data set on the graph, we can see that if we draw a line of best fit, the overall data would be increasing. Therefore, we would have a positive correlation.

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Can someone help me please?

Mars2501 [29]

Answer:

Answer below

Step-by-step explanation:

Point D: (-6,-1)

Point C: (-3,0)

Point B: (-3,6)

Point A: (0,0)

8 0

2 years ago

an iron rod of length 7 upon 8 m was cut into two pieces one piece is 1 upon 7 m long what is the length of the other piece.

bixtya [17]

Answer:

other: $\frac{41}{56}$

Step-by-step explanation:

$\frac{7}{8} =\frac{1}{7} + x\\=> x= \frac{7}{8} - \frac{1}{7} \\=> x= \frac{49}{56} - \frac{8}{56} \\=> x= \frac{41}{56}$

8 0

2 years ago

in one hour thirty two cars pass through a particular intersection at the same rate how long would it take for 96 cars to pass t

USPshnik [31]

Answer:

72 hours

Step-by-step explanation:

1hour30minutes times 48 cars (since TWO pass every 1:30, not one)

equals 72 hours, or three days

3 0

3 years ago

How many different three-digit numbers between 100 and 1,000 have 5 as the tens digit?

Trava [24]

Those are the ones that are in 50s or
50,51,52,53,54,55,56,57,58,59
10 numbers per hundred

150
250
350
450
550
650
750
850
950

9 of the hundreds
10 per each
9 times 10=90

so there are 90 of them

6 0

3 years ago

A cyclist rides into the country at an average speed of 10 miles per hour. When his bicycle gets a flat tire, he walks it back a

vladimir1956 [14]

Answer

Find out the how far into the country does he go.

To proof

Let us assume that the total diatance travelled into the country be x .

Formula

$Time =\frac{Distance}{Speed}$

As given

A cyclist rides into the country at an average speed of 10 miles per hour. When his bicycle gets a flat tire,

he walks it back at an average speed of 3 miles per hour.

If he returns home 6 and a half hours after he starts i.e the total time including the bike time and walk time of the cyclist be 6.5 hours.

Than the equation becomes

$\frac{x}{10} +\frac{x}{3} = 6.5$

L.C.M of (10,3) = 30

Than the equation becomes

3x +10x = 195

solving

13x = 195

$x = \frac{195}{13}$

x = 15 miles into the country

Hence proved

6 0

3 years ago

I really need help ​

I really need help