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Solnce55 [7]
2 years ago
15

Sally can paint a room in 4hours while it takes Steve 3 hours to paint the same room. How long would it take them to paint the r

oom if they worked together.
It would take ___ hours.
(Type an integer of decimal rounded to one decimal place as needed)
Mathematics
2 answers:
ch4aika [34]2 years ago
6 0

Answer:

Step-by-step explanation:     then it would be 7 or 9 hours

Pachacha [2.7K]2 years ago
5 0

Answer:It would take 1.700 hours.

Step-by-step explanation:

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The graph below shows a proportional relationship between x and y.
Bas_tet [7]

Answer:

  • 3.5

Step-by-step explanation:

Use point (1, 3.5) on the graph

x = 1, y = 3.5

  • y/x =
  • 3.5/1 =
  • 3.5

k = 3.5

7 0
2 years ago
Read 2 more answers
Write the sentence as an inequality.<br><br> The sum of twice a number n and 8 is less than 25
wel

Answer:

less than twenty five

v

25 - <u>(2n + 8)</u> < the sum of 2 times N plus 8.

Step-by-step explanation:

6 0
3 years ago
What is the answer?
iVinArrow [24]

Answer:42

Step-by-step explanation:

7 0
3 years ago
Please someone help me with maths​
Nata [24]

Answer:

<em>a</em><em>)</em><em>=</em><em> </em><em>5x</em><em>+</em><em>10</em>

<em>b</em><em>)</em><em>=</em><em> </em><em>7y-6</em>

<em>c</em><em>)</em><em>=</em><em> </em><em>6x-6</em>

<em>d</em><em>)</em><em>=</em><em> </em><em>2x</em><em>^</em><em>2</em><em>+</em><em>8x-5</em>

<em>e</em><em>)</em><em>=</em><em> </em><em>6x</em><em>+</em><em>9</em>

<em>f</em><em>)</em><em>=</em><em> </em><em>4xy-4y</em><em>^</em><em>2</em><em>+</em><em>8y</em>

<em>g</em><em>)</em><em>=</em><em> </em><em>-12y</em><em>^</em><em>2</em><em>+</em><em>10y</em>

<em>h</em><em>)</em><em>=</em><em> </em><em>6x</em><em>+</em><em>154</em>

<em>i</em><em>)</em><em>=</em><em> </em><em>6x</em><em>+</em><em>21</em>

<em>h</em><em>)</em><em>=</em><em> </em><em>2x</em><em>^</em><em>2</em><em>+</em><em>16</em>

6 0
2 years ago
Read 2 more answers
Bob and James are finishing the roof of a house. Working alone, Bob can shingle the roof in 14 hours. James can shingle the same
Snowcat [4.5K]

we know that Bob can do the whole job in 14 hours, how much of the work has he done in 1 hour only?  well since he can do the whole lot in 14 hours in 1 hour he has only done 1/14 th of the job.

we know that James can do it in 18 hours, a bit slower, so in 1 hour he has done only 1/18 th of the job.

let's say it takes both of them working together say "t" hours, so in 1 hour Bob has done (1/14) of the work whilst James has done (1/18) of the work, the whole work being t/t or 1 whole, so for just one hour that'd 1/t done by both Bob and James.

\bf \stackrel{Bob}{\cfrac{1}{14}}~~+~~\stackrel{James}{\cfrac{1}{18}}~~=~~\stackrel{total~for~1~hour}{\cfrac{1}{t}} \\\\\\ \stackrel{\textit{using an LCD of 126}}{\cfrac{9+7}{126}=\cfrac{1}{t}}\implies \cfrac{16}{126}=\cfrac{1}{t}\implies 16t=126\implies t=\cfrac{126}{16} \\\\\\ \stackrel{\textit{7 hrs, 52 minutes and 30 seconds}}{t=\cfrac{63}{8}\implies t=7\frac{7}{8}}\implies \stackrel{\textit{rounded up}}{t=7.88}

7 0
3 years ago
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