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ki77a [65]
3 years ago
15

Please help it's for my sister

Mathematics
1 answer:
tatiyna3 years ago
3 0
A and d is the one I would pick
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What is the difference of the fractions? Use the number line to help find the answer.<br> -<br> T0
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-7/10

Step-by-step explanation:

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2/5 (x-1)=15 (x=7)

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What is 2/9 divided by 3?
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Which statement best describes the relation (3, 4), (4, 3), (6, 3), (7, 8), (5, 4)?
snow_lady [41]

Answer:

This relation represent y as a function of x, because each value of x is associated with a single value of y

Step-by-step explanation:

we know that

A function is a relation from a set of inputs (x values) to a set of possible outputs (y values) where each input is related to exactly one output

we have the relation

(3, 4), (4, 3), (6, 3), (7, 8), (5, 4)

This relation represent y as a function of x, because each value of x is associated with a single value of y

3 0
2 years ago
What is the root of this equation? <br>2x^2 - 4x + 9 = 0​
faust18 [17]

Answer:

x = 1 + i sqrt(7/2) or x = 1 - i sqrt(7/2)

Step-by-step explanation:

Solve for x:

2 x^2 - 4 x + 9 = 0

Divide both sides by 2:

x^2 - 2 x + 9/2 = 0

Subtract 9/2 from both sides:

x^2 - 2 x = -9/2

Add 1 to both sides:

x^2 - 2 x + 1 = -7/2

Write the left hand side as a square:

(x - 1)^2 = -7/2

Take the square root of both sides:

x - 1 = i sqrt(7/2) or x - 1 = -i sqrt(7/2)

Add 1 to both sides:

x = 1 + i sqrt(7/2) or x - 1 = -i sqrt(7/2)

Add 1 to both sides:

Answer:  x = 1 + i sqrt(7/2) or x = 1 - i sqrt(7/2)

4 0
3 years ago
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