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UkoKoshka [18]
3 years ago
5

The amount of time it takes p people to paint d doors varies directly with the number of doors and inversely with the number of

Mathematics
2 answers:
Talja [164]3 years ago
4 0

Step-by-step explanation:

time ∝ number of door 1

time . ∝ 1/number of people. 2

compare equation 1 and 2

time . ∝ number of door / number of people

put k as constant

time = k number of door / number of people. 3

time =2. people=4 door = 10

putting in equation 3

2 = k (10)/(4)

2×4/10 = k

8/10 =k

4/5 =k

putting in equation 3

time= 4/5 number of door / number of people

now time =5 door= 25 people=?

5=4/5 (5)/ (number of people)

number of people =4/5 ×25/5

number of people= 4

Tatiana [17]3 years ago
4 0

Answer:

4

Step-by-step explanation:

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3 years ago
The Hu family goes out for lunch, and the price of the meal was $48. The sales tax on the meal is 7%, and the family also leaves
mr Goodwill [35]

Answer:

The total cost of the meal is $58.56.

Step-by-step explanation:

The question is asking for problem solving with percentages.  In order to multiply by a percentage, we must first convert the percentage to a decimal by diving the percent by 100.  Since the Hu family is going to leave a 15% tip on the pre-tax amount of $48, we will need to multiply 48 x .15 = $7.20.  The Hu family must also pay a 7% sales tax on the cost of the meal.  In order to find the cost of the meal, including tax, we take the price of 48 x 1.07 = $51.36, which would be the original cost plus an additional 7% tax.  Lastly, we would need to include the tip to the post-tax total:  $51.36 + $7.20 = $58.56.  

4 0
4 years ago
In the trapezoid, what is the measure of 1?
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Answer:

95

Step-by-step explanation:

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3 years ago
Andre took a trip from Boston, Massachusetts to Paris, France. In 6 2/3 hours, the plane flew 3,669 4/5 miles. How far had the p
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5 0
3 years ago
Read 2 more answers
Need help plz very much
andrew-mc [135]

Answer:

3

Step-by-step explanation:

Remember that when we are dividing two exponents with the same base (here, it's 13), we can subtract the values of the powers:

\frac{a^m}{a^n} =a^{m-n}

So, here, we have \frac{13^{10}}{13^7} , so we subtract 7 from 10:

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Thus, 3 should go in the box.

6 0
3 years ago
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