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Romashka-Z-Leto [24]
3 years ago
13

#4: STEM While resting, a human takes in about 5 liters of air In 30 seconds. At this rate, how many liters of air does he take

in during 150 seconds?
Original Ratio Final Equivalent Ratio Meaning:​
Mathematics
1 answer:
AlexFokin [52]3 years ago
5 0

Answer:

25

Step-by-step explanation:

divide 150 by 30 to find how many times 30 goes into 150. Your answer should be 5. Then times 5 by 5 to get 25. a resting human can take in 25 liters of air in 150 seconds.

hope this helps :3

if it did pls mark brainliest

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COME HERE ANSER PLEASE 25 POINTS!!!!!!!!!!!!!!!!
Lostsunrise [7]

Step-by-step explanation:

Given

- 4( 3x - 5 ) > - 28

Dividing both sides by - 4 we get

3x - 5 > 7

Adding 5 on both sides we get

3x - 5 + 5 > 7 + 5

3x > 12

Dividing both sides by 3 we get

x > 4

7 0
3 years ago
Which number produces a rational number when multiplied by 0.5?
xxMikexx [17]

If the number begins by being rational, multiplying by 0.5 will not change whether or not it is rational. It will remain rational.


That would include any even number 12 * 0.5 = 6

12 started out as rational, so the answer is rational (6)


Any odd number is also rational

23 * 0.5 = 11.5

23 and 11.5 are both rational.


3.636363636 ... is rational so when multiplied by 0.5 the result will be rational.

1.818181818....


So if we start with something irrational like pi

then pi * 0.5 is not rational.

If you have choices, please list them.
4 0
3 years ago
A movie collector has 105 movie posters and 90 band posters if she sells 21 movie posters then how many band posters should she
kotykmax [81]

Hi there! :)

<u>Answer:</u>

In order to maintain the same ratio, she should sell 18 band posters.


<u>Step-by-step explanation:</u>

<u>Initial ratio:</u>

Ratio is: 105 movie posters for 90 band posters = <u>105 : 90</u>


She sells 21 movie posters, which means that we are left with 105 movies minus the 21 she sold.

105 - 21 = 84 → She now has <u>84</u> movie posters.


In order to answer your question, you'll need to use the cross product method:

105 movie posters → 90 band posters

84 movie posters  → X

<u>(90 × 84)</u> ÷ 105 = X

<u>7,560 ÷ 105</u> = X

72 = X ⇒ Number of band posters she should have left to maintain the same ratio.

She has 90 band posters :

90 <u>- X</u> = 72

Add "X" to each side of the equation → 72 + X = 72 + X

90 = <u>72</u> + X

Subtract 72 from each side of the equation → 90 - 72 = 18

<u>18 = X</u>


There you go! I really hope this helped, if there's anything just let me know! :)

4 0
3 years ago
Suppose the coordinate of P is 2, PQ = 8, and PR = 12. What are the possible coordinates of the midpoint of the given segment? T
Ratling [72]
Base in your question the coordinate is P is 2, PQ has a coordinate of 8 while PR has a coordinate of 12. To find the mid point of each segment you must first find the coordinate of QR which is from 8-12. So the answer will be 
PQ = 5, PR = 6, and QR= 10
3 0
3 years ago
Two crews working toward each other are 6.75 miles apart one crew paves 1.3 miles of highway per day and the other paves 1.4 mil
andre [41]
One crew is doing 1.3 miles daily, the other is doing 1.4 miles daily, so both together are doing 1.3 + 1.4 miles daily, namely 2.7 miles.

now, they are 6.75 miles apart, how many days will it be at a rate of 2.7 miles per day, that 6.75 miles will be done?    \bf \cfrac{6.75}{2.7}  days
8 0
3 years ago
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