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
mixer [17]
3 years ago
11

Can anyone help me with this?

Mathematics
1 answer:
Akimi4 [234]3 years ago
7 0
1) 2/5
2) 3/7
3) - 7/18
4) 3/5
5) - 5/18
6) 8/21
7) 2/5
8) -5
9) 9
10) 4 1/2
11) - 77/20
12) 6 10/21

By the way, to write questions 3,5 and 11, you write on the page,
(This is for Question 11)
   
   77
- ----
   20
You might be interested in
sue has 18 sweets, tony also has 18 sweets, sue gives tony x sweets, sue eats 5 of her sweets, tony then eats half of his sweets
Tomtit [17]

Answer:

ssbvsbdfffdhebejsjenej

7 0
3 years ago
Read 2 more answers
Joe can cut and split a cord of firewood in 3 fewer hours than Dwight can. When they work​ together, it takes them 2 hours. How
aalyn [17]

Answer:

Dwight will take 6 hours to finish the job alone and Joe will take 3 hours to finish the job alone.

Step-by-step explanation:

Let us assume the time taken by Dwight to split a cord of firewood  = K hrs

So, the per hour rate of Dwight  = (\frac{1}{K})

As, Joe uses 3 LESS hours then Dwight.

So, the time taken by Joe to split a cord of firewood  = (K- 3) hrs

So, the per hour rate of Joe  = (\frac{1}{K-3})

Now, when both of them wok together, it takes them 2 hours.

So, the per hour rate of BOTH of them  = (\frac{1}{2})

⇒ Per hour rate of ( Dwight  + Joe)  =(\frac{1}{2} )

\implies (\frac{1}{K}) +  (\frac{1}{K-3}) = (\frac{1}{2})

Now, solving for the value of K , we get:

(\frac{1}{K}) +  (\frac{1}{K-3}) = (\frac{1}{2})\\\implies  \frac{(K-3) + K}{K (K-3)}  = (\frac{1}{2})\\\implies 2(2K -3) = K^2 - 3K\\\implies k^2 - 3K -4K +6 = 0\\\implies K^2 - 7K  + 6=  0\\\implies K^2 - 6K - K  + 6=  0\\\implies K(K-6) -1(K - 6)=  0\\\implies (K-6)(K-1) = 0

Implies either K = 6 Or K = 1

But if K = 1, (K-3)  = 1- 3  = -2 hours would be A CONTRADICTION.

⇒ K  = 6 hours

Hence, Dwight will take 6 hours to finish the job alone and Joe will take (k-3) = (6-3) = 3 hours to finish the job alone.

8 0
2 years ago
What is the mean absolute deviation of $29 $58 $15 $129 $75 $22
Vika [28.1K]

Answer:

32.666666666667

http://www.alcula.com/calculators/statistics/mean-absolute-deviation/

Insert data and it will calculate the (MAD).

7 0
3 years ago
Read 2 more answers
Using the distrubutive proberty an experstion equvalent to 45+72
Colt1911 [192]

solution:

45+72\\=(9\times 5)+(9\times 8)\\=9(5+8)\\=117

3 0
3 years ago
Is x^(-2)+5 a polynomial expression? Why or why not?
Lynna [10]

Answer:

it is not because a polynomial cannot have a negative power

3 0
3 years ago
Other questions:
  • What is the solution of the system of equations? -y+3x=6 y=-6x+12
    5·2 answers
  • What polynomial should be subtracted from the polynomial y^2–5y+1 to get the difference equal to 4y^2-y+7
    8·1 answer
  • What fraction of a pound is eighty pence
    9·2 answers
  • Can a base angle of an isosceles triangle be an obtuse angle
    10·1 answer
  • BRAINLIEST WILL BE GIVEN 20 POINTS!!!
    7·2 answers
  • Picture is question boys
    8·1 answer
  • In the diagram, ∠ ABC = 90°. What is the radius of the circle?
    10·1 answer
  • Help please!!!!!!!!!!!!!!!! Asap
    9·1 answer
  • Write the equation of the line that passes through the points (2,3) and (3, – 7). Put
    8·1 answer
  • What is the length of segment HK?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!