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kodGreya [7K]
4 years ago
9

Mile time, y. The results are shown in the table below.

Mathematics
1 answer:
diamong [38]4 years ago
3 0

My "technology" tells me the correlation coefficient is about -0.1293.

It means there is very little correlation between average mile time and weekly mileage. What correlation there is suggests that in some cases, more weekly mileage may correspond to (very slightly) faster speeds (reduced average mile time).

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State the gradient of the line parallel to 3y = 5x – 1.
Helga [31]

Answer:

Step-by-step explanation:

3y = 5x -1

y = (5/3)x - ⅓

Slope of line is 5/3.

Slope of any parallel to the line is also 5/3.

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3 years ago
NEED HELP ASAP 70 POINTS
Vera_Pavlovna [14]

Look at the picture.

We have the similar triangles (AAA). Therefore the lengths of the sides are in proportion:

\dfrac{x}{8}=\dfrac{15}{5}

\dfrac{x}{8}=3           <em>multiply both sides by 8</em>

\boxed{x=24\ in}

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4 years ago
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tell how you know that a system of two linear equations has more than one solution. how many solutions will such a system have?
riadik2000 [5.3K]
For a <span>system of two linear equations to have more than one solution, the lines representing the equations must coincide, i.e. must be the same or a multiple of each other. In that case, the system will have infinitely many solutions.
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5 0
3 years ago
Round 23.5481 to the nearest thousandth
NemiM [27]

Answer: 23.548

Step-by-step explanation: The thousandths place is 3 places to the right of the decimal point so in this problem, the digit in the rounding place is 8.

The rules of rounding says that if the digit to the right of the rounding place is greater than or equal to 5, we round down but if the digit to the right of the rounding place is less than 5, we round down.

Since the digit to the right of the rounding place, 1, is less than 5, we round down. This means that the digit in the rounding place which is 8 stays the same and we change all digits to the right of 8 to zero.

So we have 23<em>.</em>5480.

Finally, it's important to understand that when rounding decimals, we can drop any zeroes to the right of the decimal point as long as they're also to the right of the rounding place.

This means that 23.5481 rounded to the nearest thousandth is 23<em>.</em>548.

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4 years ago
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AVprozaik [17]

Anything times 1 = the same number so 696969x1=696969

3 0
3 years ago
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