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lora16 [44]
1 year ago
5

Which of the sets of ordered pairs represents a function? A = {(1, −2), (3, −5), (5, 2), (7, 5)} B = {(5 3), (5, −3), (7, 5), (7

, −5)}
Mathematics
2 answers:
alina1380 [7]1 year ago
8 0
A represents a function because the x-value doesn’t repeat
Alborosie1 year ago
5 0

Answer:

A represent function because each element of domain maps unique elemen t of range. but inB it has two images.

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If the ratio of purple marbles to orange marbles is 3 to 8, how many orange marbles will I have if I have 48 purple marbles?
sveticcg [70]

Answer:

You will have 128 orange marbles

Step-by-step explanation:

Set this up as an equation

Variable x = number of orange marbles

3/8 = 48/x

Cross multiply

3 × x = 8 × 48

3x = 384

Divide both sides by 3 to isolate the variable

3x ÷ 3 = 384 ÷ 3

1x = 128

x = 128

128 orange marbles

Check work:

Substitute the variable x for the answer

3/8 = 48/128

Cross multiply

3 × 128 = 8 × 48

384 = 384

If the numbers equal, the answer is correct

6 0
3 years ago
Read 2 more answers
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malfutka [58]

Answer:

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Step-by-step explanation:

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3 years ago
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Romashka [77]

Answer:

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Step-by-step explanation:

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when there is fixing cost (0ne time): 12x-(1400+135)

the graph shift down 135 units

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