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geniusboy [140]
4 years ago
11

Please help me *30 points*

Mathematics
2 answers:
sasho [114]4 years ago
7 0

Answer:

number 1 is         -1.5

number 2 is       -2 1/6

Step-by-step explanation

sleet_krkn [62]4 years ago
3 0

1.

The fraction on the left side is a division equation, so the inverse operation would be multiplication.

Multiply both sides by 5:

n/5 = -0.3

n = -0.3 x 5

n = -1.5

2. The equation on the left side is multiplication, the inverse operation would be division. Divide both sides by -2:

n = 4 1/3 / -2

n = -2 1/6

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Are two lines parallel, perpendicular or neither 3x+7y=15 and 7x-3y=6
maw [93]

Answer:

The lines are perpendicular

Step-by-step explanation:

we know that

If two lines are parallel, then their slopes are equal

If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes is equal to -1)

we have

3x+7y=15 ----> equation A

isolate the variable y

7y=-3x+15

Divide by 7 both sides

y=-\frac{3}{7}x+\frac{15}{7}

The slope of the line A is m_A=-\frac{3}{7}

7x-3y=6 ----> equation B

isolate the variable y

3y=7x-6

Divide by 3 both sides

y=\frac{7}{3}x-2

The slope of the line B is m_B=\frac{7}{3}

Compare the slope of both lines

m_A=-\frac{3}{7}

m_B=\frac{7}{3}

so

m_A \neq m_B ----> the lines are not parallel

Find the product of the slopes

-\frac{3}{7}(\frac{7}{3})=-1 ----> the lines are perpendicular

4 0
3 years ago
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Karo-lina-s [1.5K]

Answer:

The answer would be -10x-9

4 0
3 years ago
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Answer:

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Step-by-step explanation:

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Answer:

3.07091228=x

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

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Bingel [31]

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2 years ago
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