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Lilit [14]
3 years ago
11

Can you help me? I don't understand this

Mathematics
1 answer:
hodyreva [135]3 years ago
7 0
63.99 your welcome I hope it's write
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i honeslty dont know but good luck have agood night

Step-by-step explanation:

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Solve for n:<br> 1-5|n-9|=-74<br><br> I need answer by 12:10, please help!!!
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The answer is -6, 24
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while installing a window in an older home, you find that the measurements are not square and will need to shim one side. you fi
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while installing a window in an older home, you find that the measurements are not square and will need to shim one side. you find a packet of shims that have 0.25 inch marked on the outside of the wrapper. What fraction of an inch is 0.25, reduce to its lowest terms 0.30

Step-by-step explanation:

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Plss help me find this hcf<br><br>3a-6,a²-4​
aleksklad [387]

Step-by-step explanation:

1st expression = 3a - 6 = 3 ( a - 2 )

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Janet is training for a marathon. She decides to track her time per mile, in minutes, for 8 weeks. Which equation best fits the
Anna007 [38]

Answer:

y=-0.18 x+10.06

Step-by-step explanation:

The nine coordinates are (0,10), (1,9.9),  (2,9.6),(3,9.5), (4,9.4), (5,9.2), (6,9), (7,8.7), (8,8.6)

To find the line that best fit the data is to substitute the values in this equation y=a x+b where a=\frac{\left(N * \sum x y\right)-\left(\sum x * \sum y\right)}{\left(N * \sum x^{2}\right)-\left(\sum x * \sum x\right)} and b=\frac{\left(\sum x^{2} * \Sigma y\right)-\left(\sum x * \Sigma x y\right)}{\left(N * \Sigma x^{2}\right)-\left(\sum x * \Sigma x\right)}

Using the values from the table attached below, we can substitute and find the values of a and b

Substituting the values of a, we get,

\begin{aligned}a &=\frac{\left(N * \sum x y\right)-\left(\sum x * \Sigma y\right)}{\left(N * \sum x^{2}\right)-\left(\sum x * \sum x\right)} \\&=\frac{(9 * 324.9)-(36 * 83.9)}{(9 * 204)-(36 * 36)} \\&=-0.18\end{aligned}

Similarly, substituting the values of b, we get,

\begin{aligned}b &=\frac{\left(\sum x^{2} * \Sigma y\right)-\left(\sum x * \sum x y\right)}{\left(N * \sum x^{2}\right)-\left(\sum x * \sum x\right)} \\&=\frac{(204 * 83.9)-(36 * 315)}{(9 * 204)-(36 * 36)} \\&=10.06\end{aligned}

Thus, substituting the values of a and b in the formula, we get,

\begin{aligned}y &=a x+b \\&=-0.18 x+10.06\end{aligned}

8 0
3 years ago
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