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3 years ago

if a train takes 40 minutes to travel from town a to town b what is its speed in kilometers per minute

Mathematics

1 answer:

lana66690 [7]3 years ago

5 0

70? unless the km on the street says 50 or 60 n there's traffic

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A teacher polled only the 8th grade students in English classrooms on what their favorite color is. She found that the favorite

amid [387]

Answer:

This is a biased sample.

Step-by-step explanation:

This is because she gave a random sample, but the she had the convenience of the students being with her when she surveyed. So it'e not actually random. She could also worded the survey or gave a biased response.

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2 years ago

Jonah was paid $2900 to complete a landscaping job. He had to purchase $1200 worth of materials to use for the project. Then, he

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$17.35

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3 years ago

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If each letter of the alphabet is worth two more than its preceding letter, where A is the first number and equals 1, B is the s

andrey2020 [161]

Answer:

<h2>The total value of all the letters in the alphabet is 676.</h2>

Step-by-step explanation:

The problem is about an arithmetic sequence where the difference is 2, the first term is 1 and we know that the alphabet has 26 letters.

To find the total sum of all values, we have to use the following formula

$S_{n}=\frac{n}{2}(2a_{1}+(n-1)d )$

Where $n=26$ , $a_{1}=1$ and $d=2$ . Replacing values, we have

$S_{26}=\frac{26}{2}(2(1)+(26-1)2) =13(2+50)=13(52)=676$

Therefore, the total value of all the letters in the alphabet is 676.

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3 years ago

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Please help Ik taking the map staar

krok68 [10]

Answer:

I think it's d

Step-by-step explanation: Because they have equal sides and length

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3 years ago

Please help me use the picture 25 points

enyata [817]

Answer:

31.581 grams rounded to the nearest tenth is 31.6

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2 years ago

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