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3 years ago

Explain why the mapping diagram below represents a function.

Mathematics

1 answer:

tiny-mole [99]3 years ago

6 0

Answer:

Because there is only one out put for each domain this mapping diagram is a function.

Step-by-step explanation:

Two sets are involved. There is a directional property, the relation is defined from one set called the domain on to another set called the codomain. A function is a relation that has exactly one output for each input in the domain.

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Zach can read 7pages of a book in 5 minutes at this rate how long will it take him to read 175 pages

AlexFokin [52]

125 minutes. 175 divided by seven is 25 and 25 multiplied by 5 is 125

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3 years ago

Which percent is represented by the diagram below? 2 area models with 100 squares. In the first model, 100 squares are shaded. I

olga_2 [115]

Answer:

125%

Step-by-step explanation:

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3 years ago

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Which equations represent the line that is parallel to 3x − 4y = 7 and passes through the point (−4, −2)? Check all that apply.

jonny [76]

First, we find the slope of the given line.

3x − 4y = 7

-4y = -3x + 7

y = (3/4)x - 7/4

The slope of the given line is 3/4.
The slope of the parallel line is also 3/4.

Now we need the equation of the line that has slope 3/4 and passes through point (-4, -2),

We use the point-slope form of the equation of a line.

y - y1 = m(x - x1)

y - (-2) = (3/4)(x - (-4))

y + 2 = (3/4)(x + 4) <---- check option E. Is the fraction 3/4 not there?

y + 2 = (3/4)x + 3

y = (3/4)x + 1

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3x - 4y = -4 <------ this is choice B.

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3 years ago

Karina needs a total of $45 to buy her mother a birthday present. She has saved 20% of the amount so far. How much has she saved

CaHeK987 [17]

Answer:

Step-by-step explanation:

20% of 45 is 9.

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3 years ago

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Which is the equation of a circle whose center is at the origin and that passes through the point (3, 5)?

xxTIMURxx [149]

Answer:

x² + y² = 34

Formula:

(x - h)² + (y - k)² = r² where (h, k) is the center

Here find the radius using distance formula: → origin : (0, 0)

√(x2-x1)²+(y2-y1)²

√(3-0)²+(5-0)²

√9+25

√34

Thus the equation of circle:

(x - 0)² + (y - 0)² = (√34)²

(x - 0)² + (y - 0)² = 34

x² + y² = 34

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2 years ago

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