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hodyreva [135]
3 years ago
9

It takes Jimmy 11 minutes to sweep a porch.

Mathematics
2 answers:
Katena32 [7]3 years ago
7 0

Answer:

5.96 min

Step-by-step explanation:

Jimmy's rate, J = 11 min for whole porch

Amy's rate, A = 13 min for whole porch

to find the combined rate, C,

the reciprocal of the combined rate equals the sum of the reciprocals of each individual rate. i.e

1/C = 1/J + 1/A

substituting the above values

1/C = 1/11 + 1/13  (convert right side to same denominator)

1/C = 13 / (11 x 13)  + 11 / (11 x 13)

1/C = 13 /143 + 11 /143

1/C = (13 + 11) /143

1/C = 24 /143   (taking reciprocal of both sides)

C = 143 / 24 = 5.96 min

lara31 [8.8K]3 years ago
4 0
Like 6 minutes or somthin
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A division of the Gibson Corporation manufactures bicycle pumps. Each pump sells for $10, and the variable cost of producing eac
svlad2 [7]

Answer:

12,500 units

Step-by-step explanation:

Given:

Selling cost of the pump = $10

Variable cost of producing each unit = 60% of selling cost

or

Variable cost of producing each unit  = 0.60 × $10 = $6

Monthly fixed cost = $50,000

Now,

The profit per unit = Selling cost - Variable cost

or

The profit per unit = $10 - $6 = $4

Therefore,

The breakeven point = \frac{\textup{Fixed cost}}{\textup{Profit per unit}}

or

the breakeven point = \frac{\textup{50,000}}{\textup{4}}

or

the breakeven point = 12,500 units

8 0
3 years ago
I’m struggling with this could you help me pls
deff fn [24]
X=0, y=6
x=1, y=4
x=2, y=2
x=3, y=0
x=4, y=-2

Hope this helps :)
4 0
3 years ago
Read 2 more answers
Only the function represented by graph has an inverse function.
Arlecino [84]

Answer:

Only the function represented by graph 2 has an inverse function

Step-by-step explanation:

* Lets explain the inverse of the function

- The Function is a relation between x-coordinates and the y-

 coordinates of the order pairs under the condition every

 x-coordinate has only one y-coordinate

- Ex: R = {(2 , 3) , (1 , 5) , (-2 , -3)} is a function because every x-

 coordinate has only one y-coordinate and R = {(2 , 3) , (-1 , 4) ,

 (2 , 5)} not a function because the x-coordinate 2 has two y-

 coordinates 3 and 5

- We use the vertical line to test the graph is function or not, if

 the vertical line intersects the graph in one point then the

 graph is function if intersects it in more than one point then the

 graph is not function

- We have two types of function one-to-one function and

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# one-to-one function means every x-coordinate has only 1 y-coordinate

# many-to-one function means some x-coordinates have only 1

  y-coordinate

- We find the inverse function by switching x and y, then one-to-

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 because when we switched x and y it will be one-to-many

 means one x-coordinate has many y-coordinates and this is not

 a function

- We use the horizontal line to test the graph of the function has

 inverse or not, if the horizontal line intersects the graph in one

 point then the function of the graph has inverse if it intersects

 the graph in more than one point ,then the function of the  

 graph has no inverse

* Now lets test all the graphs by using the horizontal line

# graph 1

∵ The horizontal line cuts the graph in more than 1 point

∴ The function of graph 1 has no inverse

# graph 2

∵ The horizontal line cuts the graph in just 1 point

∴ The function of graph 2 has inverse

# graph 3

∵ The horizontal line cuts the graph in more than 1 point

∴ The function of graph 3 has no inverse

# graph 4

∵ The horizontal line cuts the graph in more than 1 point

∴ The function of graph 4 has no inverse

* Only the function represented by graph 2 has an inverse function

4 0
3 years ago
Does anyone get this? <br> The answers are <br> A - 22.8 <br> B - 25.5 <br> C - 14.1<br> D - 31.2
Rom4ik [11]

Answer:

Step-by-step explanation:

I think your supposed to add all those numbers together

5 0
3 years ago
Read 2 more answers
206 - Straight lines graph 1 what are the answers?
insens350 [35]

Answer:

how r we supposed to help if u dont have the picture

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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