Ask question

Ask question

All categories

1 year ago

8

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

1 answer:

LekaFEV [45]1 year ago

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

You might be interested in

PLEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEASE

mario62 [17]

(15, -8) :)
From C to midpoint you do (+10, -7), so you have to do that again to get to D

4 0

2 years ago

13.4×0.05×1.8= I think I got this right just wanna,make sure

andrew-mc [135]

Answer:1.206 is what i got

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Write the expression 23⁄5 as a radical.

bagirrra123 [75]

The expression of 23/5 is 2.1

5 0

2 years ago

A 2-column table with 3 rows titled Units of Length. Column 1 is labeled Customary System Units with entries 1 inch, 1 foot, 1 m

Komok [63]

Answer:

the answer is b

Step-by-step explanation:

5 0

2 years ago

Two mechanics worked on a car. The first mechanic charged $65 per hour, and the second mechanic charged $90 per hour. The mechan

Katena32 [7]

Answer:

First mechanic worked 20 hours and second mechanic worked 5 hours

Step-by-step explanation:

Let the number of hours the first mechanic worked = $a$

Let the number of hours the second mechanic worked = $b$

Therefore, we can write 2 equations and then solve them simultaneously:

$a+b=25$

$65a+90b=1750$

Rearranging the first equation: $a=25-b$

and substituting into the second equation to find $b$ :

$65(25-b)+90b=1750$

$1625-65b+90b=1750\\
25b=125\\
b=5$

Now sub $b=5$ into the first equation to find $a$

$a+5=25\\
a=20$

Therefore, first mechanic (a) worked 20 hours and second mechanic (b) worked 5 hours

4 0

1 year ago