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julsineya [31]
3 years ago
13

mark can cleaN the house in 7 hours. when he cleans the same house with wend, it takes them 3 hours to clean the house. how long

would it rake wendy to clean the house by herself
Mathematics
2 answers:
nevsk [136]3 years ago
8 0

Answer:

4

Step-by-step explanation:

blondinia [14]3 years ago
7 0

Answer:5.25

Step-by-step explanation:

3(1/7 + 1/x) = 1

3([x + 7]/7x) = 1

3x + 21 = 7x

4x = 21

x = 21/4 OR 5.25

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BELL RINGER #2
NemiM [27]

Answer:

A. 2 4/5

Step-by-step explanation:

To find how many hours she worked for $210, you must get the amount of money she gets in 1 hour.

Because she charges $43 dollars every hour, and fines a fee of $30 flat, we must add both of the amount to get how many she earns in 1 hour.

So:

$45 + $30= $75

She earn $75 in 1 hour.

Next, divide $210 dollars that she earned for working for hour(s) to the amount of money she earned in 1 hour to find how many hours she worked.

So:

$210 ÷ $75= 2.8 hours

The answer is 2.8 hours

Because the given answers is in fraction, we must change the decimal into a fraction.

To change a decimal into a fraction, you must place the decimal over its place value.

Because 8 in the decimal 2.8 is in the tenths place, you must place it over 10

So:

2.8 into a decimal is 2 8/10

Simplify (only simplify if possible):

Divide 8 and 10 to their GCF which is 2.

So:

8 ÷ 2= 4

10 ÷ 2= 5

So the fraction and the answer is now:

2 4/5

I hope this helps! I'm sorry if it's wrong and too complicated.

4 0
3 years ago
Together leslie and elena have 5.25 dollars elena has 0.25 more than leslie. how much each have
olya-2409 [2.1K]
Leslie has 2.50
elena has 2.75

5.25-.25 (for the amount that they don’t have equal) =5
5/2 (split equal between two people) =2.50
2.50+.25 (the amount elena has more than leslie) =2.75
5 0
3 years ago
18 ➗ (-4 1/2) with explanation​
slamgirl [31]

Answer:

-4

Step-by-step explanation:

If anything the first thing you would want to do is covert your fraction so a decimal. (-4 1/2) as a decimal is -4.50. From there it would be easier to divide. to get an answer of -4

8 0
3 years ago
Estimate then measure each to the nearest inch 1/2 inch and 1/4 inch
Taya2010 [7]
Not enough information

6 0
4 years ago
Emily's family loves to work together in the garden.They have a slight preference for flowers, as 60\%60%60, percent of their pl
mylen [45]

50 plants total, 40% are vegetables

40% = 40/100 = 0.40

40% of 50 = 0.40*50 = 20

<h3>Answer: There are 20 vegetable plants</h3>
5 0
4 years ago
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