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Kruka [31]
2 years ago
6

Wich of the following functions maps 3 to -5?

Mathematics
1 answer:
kolezko [41]2 years ago
5 0

Answer:

A

Step-by-step explanation:

Consider all options and find f(3):

A.

Then

Not -5, so this option is false.

B.

Then

This option is true.

C.

Then

Not -5, so this option is false.

D.

Then

Not -5, so this option is false.

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m_a_m_a [10]

Answer: there are eight bicycles and 7 tricycles.

Step-by-step explanation:

Let x represent the number of bicycles that are there.

Let y represent the number of tricycles that are there.

There are a total of 15 bicycles and tricycles. This means that

x + y = 15

A bicycle has 2 wheels and a tricycle has 3 wheels. There are 37 wheels all together if we count them up. This means that

2x + 3y = 37- - - - - - - - - - - - - 1

Substituting x = 15 - y into equation 1, it becomes

2(15 - y) + 3y = 37

30 - 2y + 3y = 37

- 2y + 3y = 37 - 30

y = 7

x = 15 - y = 15 - 7

x = 8

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60

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6600 x 10% = 60&$;#;,$:#&#>$

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2 years ago
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Susan incorrectly factored the expression below. 12a − 15b + 6 3 (4a + 5b + 3)
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Step-by-step explanation:

The answer should have originally been 3(4a-5b+2)

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