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kirza4 [7]
3 years ago
7

A crew will arrive in one week and begin filming a city for a movie. The mayor is desperate to clean the city streets before fil

ming begins. Two teams are​ available, one that requires 200 hours and one that requires "400" hours. If the teams work​ together, how long will it take to clean all of the​ streets? Is this enough time before the cameras begin​ rolling?
Mathematics
1 answer:
Zigmanuir [339]3 years ago
6 0

Answer:

See below in bold.

Step-by-step explanation:

You work in fractions of the city streets done per hour:

1/200 + 1/400 = 1 /x  where x is the number of hours taken by 2 teams.

Multiply through by the LCM 400x:

2x + x = 400

3x = 400

x =  133.33 hours.

As there are 168 hours in a week they will have enough time.

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hodyreva [135]
(-2,1). Hope this helps!
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3 years ago
Find the selling price. Where necessary, round to the nearest cent. Regular price:$14.99. Percent of discount:15%
RSB [31]

Answer:

the price is approximately $12.75

Step-by-step explanation:

4 0
3 years ago
GUYS HELP PLSS, I SWTG
n200080 [17]

Step-by-step explanation:

#1 equals 1 1/4

The common denominator for 1/6, 2/3, and 5/12 would be 12. So I made the denominators 12 which means 1/6 would turn into 2/12, 2/3 turns into 8/12, and 5/12 stays the same. When I add them all up I get 15/12. I can turn that into a mixed number which would be 1 3/12. I can simplify that down to <em><u>1 1/4.</u></em>

#2 equals 3/4

The first thing you have to do is turn 2 2/3 and 1 3/4 into improper fractions. Which would turn 2 2/3 into 24/3 and 1 3/4 into 21/12. The next thing is you have to find a common denominator which would be 12. Next you have to turn the denominators into a 12 and change the numerator. Which makes the fractions: 24/12, 6/12, and 21/12. When you add 24/12 and 6/12 together you get 30/12 minus 21/12 you get 9/12. You can then simplify that to <em><u>3/4. </u></em>

#3 equals -1 17/36

The first thing you do is turn 3 5/18 into an improper fraction which would be 59/18. then you find a common denominator which would be 36 and make the denominators of those numbers into 36 which would be 11/36, 54/36, and 118/36. When you add up 11/36 and 54/36 you get 65. but when you - 65 by 118 you get -53 / 36. you can lend turn that into <u>-</u><em><u>1 17/36. </u></em>

I'm not sure about number 4 and I don't want to give you the wrong answer. Hopefully what I did show you helped!

4 0
2 years ago
Can someone help me with this question
zimovet [89]

Answer:

9 hours babysitting

3 hours landscaping

Step-by-step explanation:

Since Maya worked 3 times as many hours in babysitting than landscaping

so landscape hours is x and babysitting is 3x so

3(7)+11=

21+11=32

so each hours she works landscaping and for 3 hours of babysitting she earns $32

96/32=3 so

9 hours babysitting

3 hours landscaping

8 0
3 years ago
Simplify this expression (4.76)(12.5)
ruslelena [56]
<span><span>(4.76)</span><span>(12.5)</span></span><span>

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4 0
3 years ago
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