2 years ago

Can someone plss help me with this with good explanation!!!

1 answer:

7 0

Answer:

1. What happens when air is heated or cooled? ... So air, like most other substances, expands when heated and contracts when cooled. Because there is more space between the molecules, the air is less dense than the surrounding matter and the hot air floats upward.

Step-by-step explanation:

Hope this helps

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A number is multiplied by 23. The result is 18. Find the original number.

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Answer:

the number was probably multiplied by 3 and then divided by 2 which is 18

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Based on the inequality above, explain why the 'greater than' sign ( > ) changes to a 'less than' ( < ) sign.

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Because when you divide both sides by a negative number, the inequality sign changes.

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4 years ago

Sarah found the mean of a set of numbers to be 205.09.how should she read this value out loud?

Elena-2011 [213]

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3 years ago

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Darren’s mail route is 68 miles. He drives this route 6 days each week.

DENIUS [597]

Answer:

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Step-by-step explanation:

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3 years ago

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Elena and Jada are 25 miles apart when they start moving toward each other. Elena runs at a constant speed of 6 mph and Jada wal

Setler [38]

<u>Answer:</u>

The Time taken by Elena and Jade to meet up is 2.5 hours

<u>Explanation:</u>

Given,

Elena moves with a speed of 6mph while Jada walks at a speed of 4 mph

Also, Distance can be calculated by the formula

$Distance = Speed * Time$

To find out the Total speed, i.e., speed of both Elena and Jada as both of them are walking in opposite direction we should add the speed of both the persons, if in same direction we should subtract the values

Here it will be: $6 + 4$ = 10mph

Distance apart is given as 25 miles. Substituting the values,

$Distance = Speed * Time$

25 = $10 * time$

Time = 25/10

Time = 2.5 hour

Hence, It will take 2.5 hours to meet up.

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4 years ago