1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
torisob [31]
3 years ago
5

12 Two plumbers received a job. At first, one of the plumbers worked alone for 1 hour, and then they worked together for the nex

t 4 hours. After this 40% of the job was finished. How long would it take each plumber to do the whole job by himself if it is known that it would take the first plumber 5 more hours to finish the job than it would take the second plumber
Mathematics
1 answer:
Degger [83]3 years ago
4 0
The answer should be 12
You might be interested in
Identify the y-intersept of the function -3(3)^x+4
Marta_Voda [28]

Answer:

The answer is (0,1)

Step-by-step explanation:

8 0
2 years ago
Angel has $10.60 in a jar that contains only quarters and dimes. There are 100 coins in the jar. How many dimes are in angels ja
Allushta [10]
53 dimes are in the jar

hope this helps


3 0
3 years ago
What is the standard form of the number three million sixty thousand five hundred twenty
Serga [27]
3,060,520 
3,060,520
3,060,520
3 0
3 years ago
Read 2 more answers
Plz show work and solve quick please need help!!!!!
Simora [160]
Surface area is just the area of all these 4 triangles plus the rectangle.

First we can find the area of the rectangle.

\sf A=lw

Half of the length is 28 cm, so the full length must be 28 * 2 = 56 cm.

\sf A=(56)(27)

\sf A=1512cm^2

The base for the left and right triangles are 27. The heights would be the net length minus half the length of the rectangle:

\sf 82.8-28=54.8\? cm

Calculate the area:

\sf A=\dfrac{1}{2}bh

\sf A=\dfrac{1}{2}(27)(54.8)

\sf A=739.8\?cm^2

We have two of these triangles.

\sf 739.8\times 2=1479.6\? cm^2

Now do the other two pair of triangles. The bases for them are 28 + 28 = 56 cm. The heights would be the net width minus the width of the rectangle:

\sf 81.2-27=54.2\?cm

Now find the area:

\sf A=\dfrac{1}{2}bh

\sf A=\dfrac{1}{2}(56)(54.2)

\sf A=1517.6\? cm^2

We have two of these triangles.

\sf 1517.6\times 2=3035.2\?cm^2

Add all the areas together:

\sf 1512+1479.6+3035.2=\boxed{\sf 6026.80\? cm^2}
7 0
3 years ago
(Geometry) The answers are x = 15 and y = 9 but I don't know how. Help me understand this
Kryger [21]

Check the picture below.

\bf \stackrel{\measuredangle DAC}{4y+2x}~~=~~\stackrel{\measuredangle BCA}{9y-x}\implies 2x=5y-x\implies 3x=5y\implies \boxed{x=\cfrac{5y}{3}} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\measuredangle DAB}{[(4y+2x)+35]}~~+~~\stackrel{\measuredangle ADC}{5x+4}~~=~~180\implies 4y+2x+5x+39 = 180 \\\\\\ 4y+7x+39=180\implies 4y+7x=141\implies \stackrel{\textit{substituting "x"}}{4y+7\left( \boxed{\cfrac{5y}{3}} \right)} = 141

\bf 4y+\cfrac{35y}{3}=141\implies \stackrel{\textit{multiplying both sides by }\stackrel{LCD}{3}}{3\left( 4y+\cfrac{35y}{3} \right)=3(141)}\implies 12y+35y=423 \\\\\\ 47y=423\implies y=\cfrac{423}{47}\implies \blacktriangleright y = 9 \blacktriangleleft \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{since we know that}}{x=\cfrac{5y}{3}}\implies x = \cfrac{5(9)}{3}\implies \blacktriangleright x = 15 \blacktriangleleft

4 0
3 years ago
Other questions:
  • 40 points Please help, answer and explain, please. Thank you!
    13·1 answer
  • How do you solve for #23
    5·1 answer
  • Find average rate of change <br>f(x)=x^(2)-3x-4 ; [-1,3]
    13·1 answer
  • Approximate the square root of 12 to the nearest integer helppppppp!!!!!!!!
    10·1 answer
  • On, average the front door of a home is opened 28 times each day.The williams family opened the front door 17 times more than th
    6·1 answer
  • Boxes that are 12 inches tall are being piled next to boxes that are 10 inches tall. What is the least
    13·1 answer
  • What is the
    10·1 answer
  • Please someone help me ​
    6·1 answer
  • I cant solve this can i get some help? <br> 2 cos x + √ 2 = 0
    15·1 answer
  • Bob rode his scooter 2.3 miles to his friend's house, then 0.8 miles to the library, then 1.9 miles to the grocery store. If he
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!