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telo118 [61]
3 years ago
10

(m-n)*2 -18(m-n) +77​

Mathematics
1 answer:
nikdorinn [45]3 years ago
6 0

Answer:

-16m + 16n + 77

Step-by-step explanation:

2(m - n) - 18(m - n) + 77

We can let x = (m - n) to make our job easier.

2x - 18x + 77

Now, we can conclude that this expression is equal to -16x + 77.

We can substitute x = (m - n) back into the expression:

-16(m - n) + 77

Distribute:

-16m + 16n + 77

And you're done!

Please mark as brainliest! :

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A botanist collected one leaf at random from each of 10 randomly selected mature maple trees of the same species. The mean and t
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Answer:

One sample t-test for population mean would be the most appropriate method.

Step-by-step explanation:

Following is the data which botanist collected and can use:

  • Sample mean
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We have to find the best approach to construct the confidence interval for one-sample population mean. Two tests are used for constructing the confidence interval for one-sample population mean. These are:

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One sample z test is used when the distribution is normal and the population standard deviation is known to us. One sample t test is used when the distribution is normal, population standard deviation is unknown and sample standard deviation is known.

Considering the data botanist collected, One-sample t test would be the most appropriate method as we have all the required data for this test. Using any other test will result in flawed intervals and hence flawed conclusions.

Therefore, One-sample t-test for population mean would be the most appropriate method.

8 0
3 years ago
Jaleesa bought a movie online. She paid $19.00 plus tax. The sales tax was 9%. How much did she pay in sales tax?
boyakko [2]

Answer: she paid $1.71 in sales tax.  

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Find 9 percent of 19 to find the sale tax.

9% of 19 =

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7 0
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What is the distance between the point (−10, −2)(−10, −2) and the point (−4, −2)(−4, −2) ?
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What is the mathematical relationship between the atomic radius (r) and the lattice parameter (a0) in the BCC structure? a. b. c
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Answer: Lattice parameter, a = (4R)/(√3)

Step-by-step explanation:

The typical arrangement of atoms in a unit cell of BCC is shown in the first attachment.

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If the diagonal of the base of the unit cell = x

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Pythagoras theorem,

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QED!!!

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