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Gwar [14]
2 years ago
8

Sally can paint a room in 4 hours while it takes steve 5 hours to paint the same room. How long would it take them to paint the

room if they worked together?

Mathematics
1 answer:
sdas [7]2 years ago
8 0

Answer:

I think it's 20/9 hours. so 2.222222... hours.

Step-by-step explanation:

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Which is a valid proportion? <br> A. 3/4=21/28<br> B. 5/6=29/30<br> C.4/7=16/49<br> D.2/5=12/15
LiRa [457]
A valid proportion would be 3/4=21/28.

You would multiply both the 3 & 4 is 3/4 by 7 to get 21/28.

Hope this helps!
Can u plz mark me as brainliest? I really need it!
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What is 4.1528 rounded to the nearest thousandth?
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4 years ago
You are volunteering to help with the soccer team fundraiser for Valentine's Day. Your team promised to deliver one 16 ounce bag
icang [17]

The student, who suggests that if we do half and half of each bag, we will be giving them at least 60%,<u> is correct</u>.

<h3>What is the implication of the phrase "at least"?</h3>

The phrase "at least" means the minimum that is true or possible.

Mathematically, by "at least," we mean 'equal to or greater than.'

<h3>Data and Calculations:</h3>

Since each bag of nuts contain 16 ounces,

The 1st bag contains x/2 ounces (50%) of plain nuts and x/2 ounces (50%) of chocolate-covered nuts.

The 2nd bag contains x/5 ounces (20%)of plain nuts and 4x/5 ounces (80%) of chocolate-covered nuts.

If half of the 1st bag is mixed with half of the 2nd bag, each bag will contain only 65% (that is, 25% (50%/2) from the 1st bag and 40% (80%/2) from the 2nd bag).

Thus, the student, who suggests that if we do half and half of each bag, we will be giving them at least 60%, <u>is correct</u> since they will not be given less than 60% of chocolate-covered nuts inside.

Learn more about proportions at brainly.com/question/870035

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2 years ago
Solve the equation. Graph the solution(s) if possible.<br><br> ∣x−3∣+4=9
Mazyrski [523]

Answer:

x=8

x=-2

Step-by-step explanation:

∣x−3∣+4=9

= ∣x−3∣=5

<u>Positive term: (x-3)</u>

  (x-3) = 5

Rearrange and Add up

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<u>Negative term: -(x-3)</u>

Multiply

     -x+3 = 5  

Rearrange and Add up

     -x = 2  

Multiply both sides by (-1)

     x = -2

3 0
3 years ago
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