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Sati [7]
3 years ago
5

True or False for each statement.

Mathematics
1 answer:
9966 [12]3 years ago
7 0
1) true
2) false
3) true
4) false
5) true
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PLEASE HELP!!!!!!!
hodyreva [135]

Answer:Zöe set up an equation that would translate to “twice the number of 30 second ads = the number of 60 second ads.”  She should have used

Step-by-step explanation:

4 0
3 years ago
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Jena and matt, working together, can mow the lawn in 44 hours. working alone, matt takes four times as long as jena. how long do
madam [21]
Let jena take x hours to mow the lawn on her own.-  then we can write the equation 

1/x + 1/4x = 1 / 44

44 + 11 = x  

x = 55

x takes 55 hours to mow the lawn
6 0
3 years ago
30 men repair a road in 56 days by working 6 hours daily. In how many days 45 men will repair the same road by working 7 hours d
svetoff [14.1K]

Step-by-step explanation:

(30 men, 56 days, 6 hours daily)

=> (30 men, 48 days, 7 hours daily)

=> (45 men, 32 days, 7 hours daily)

Hence it will take 32 days.

5 0
3 years ago
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

 many-to-one function

# 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-

 one function has inverse but many-to-one has not inverse

 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
15 out of 25 perfer skittles to M&MS. what percent of students prefer skittles ​
likoan [24]

Answer:

60%

Step-by-step explanation:

Just divide 15 by 25 and then move the decimal point 2 places to the right. Then turn that number into a percentage.

6 0
3 years ago
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