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Vlad [161]
4 years ago
10

Is {(4, 8), (8, 4), (4, 12), (20, 16), (12, 16)} a function

Mathematics
1 answer:
SpyIntel [72]4 years ago
3 0

Answer:

  no

Step-by-step explanation:

Look at the first numbers of each ordered pair:

  4, 8, 4, 20, 12

If any are repeated, the relation is NOT a function. Here, 4 is repeated.

The relation is not a function.

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Dave is three times older than Jim, and Jim is half Bill’s age. If their average age is 64, what is Jim’s age?
Tema [17]
<h3><u>Dave is 96 years old.</u></h3><h3><u>Jim is 32 years old.</u></h3><h3><u>Bill is 64 years old.</u></h3>

d = 3j

j = 1/2b

64 = (d + j + b)/3

d = 3(1/2b)

d = 1.5b


64 = (1.5b + 1/2b + b)/3

Combine like terms.

64 = (3b)/3

Multiply both sides by 3.

192 = 3b

Divide both sides by 3.

64 = b

Because we have the value for b we can plug it into the other equations to solve for the other ages.

j = 1/2b

j = 1/2(64)

j = 32


d = 3j

d = 3(32)

d = 96


6 0
4 years ago
The linear model y equal 0.6 x plus 45 represents the number of pairs of sandals sold, y, for a given outdoor temperature of x d
Alexxx [7]

Answer:

99

Step-by-step explanation:

Given the linear equation:

y = 0.6x + 45

x = outdoor temping degrees ; y = number of pair of sandal sold

Number of pairs of sandals the company expect to sell if the outside temperature is 90 degrees?

y = 0.6(90) + 45

y = 54 + 45

y = 99

The expected number of sandals to sale will be 99

5 0
3 years ago
A her of 40 horses has 9 white and some black horses. What is the ratio of white to black horses?​
solmaris [256]

Answer:

The number of white horse to white horse is 9 : 31

Step-by-step explanation:

Given as :

The Total number of horses = 40

The number of white horses = 9

Let the number of black horses = x

So, x + 9 = 40

Or x = 40 - 9 = 31

∴ The number of black horses = 31

Now,  The ratio of while to black horses = number of white horse : number of black horse

Or, number of white horse : number of black horse = 9 : 31

Hence The number of white horse to white horse is 9 : 31   Answer

7 0
3 years ago
Need math help!! answer choices are 80 , 40, 20, and 60
vivado [14]

Answer:

60

Step-by-step explanation:

The corresponding angles of the triangles are given, y + 10 and 2y - 40. You need to first find the value of the variable (in this case, y), and to do this, you need to set them equal to one another:

y + 10 = 2y - 40

<u>Subtract y from both sides:</u>

<u />

y + 10 = 2y - 40

-y          -y

____________

10 = y - 40

<u>Add 40 to both sides:</u>

<u />

10 = y - 40

+40    +40

________

50 = y

Now that we have the value of y, you need to plug the value into one of the expressions (either one will come out with the same answer):

y + 10

50 + 10 = 60

<em><u>OR</u></em>

<u />

2y - 40

2(50) - 40

100 - 40 = 60

<u />

5 0
3 years ago
A tool box has the dimensions of 9 in by 3 in by 6 in. If Rick plans to double all three dimensions to build a larger tool box,
natta225 [31]

Answer:

No; it will not double the volume of the box

Step-by-step explanation:

5 0
3 years ago
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