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3 years ago

Please answer 25 points!

Mathematics

2 answers:

erastovalidia [21]3 years ago

6 0

Answer:

-3

Step-by-step explanation:

that's just the correct answer, I know.

Alekssandra [29.7K]3 years ago

4 0

Answer:

-3

Step-by-step explanation:

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Given that OA = 2x + 9y, OB = 4x + 8y and CD = 4x - 2y, explain the geometrical relationships between the straight lines AB and

Step2247 [10]

Answer:

The geometrical relationships between the straight lines AB and CD is that they have the same slope

Step-by-step explanation:

Given

$OA = 2x + 9y$

$OB = 4x + 8y$

$CD = 4x - 2y$

Required

The relationship between AB, CD

Since AB is a straight line and O is the origin, then:

$AB = (c - a)x + (d - b)y$

Where:

$OA = ax + by$ ====> $OA = 2x + 9y$

$OB = cx + dy$ ====> $OB = 4x + 8y$

This implies that:

$a =2$ $b = 9$ $c = 4$ $d = 8$

So:

$AB = (c - a)x + (d - b)y$

$AB = (4 - 2)x + (8 - 9)y$

$AB = 2x -y$

So, we have:

$AB = 2x -y$

$CD = 4x - 2y$

Calculate the slope (m) of $AB\ and\ CD$

$m = \frac{Coefficient\ of\ y}{Coefficient\ of\ y}$

For AB

$m_1 = \frac{-1}{2}$

$m_1 = -\frac{1}{2}$

For CD

$m_2 = \frac{-2}{4}$

$m_2 = \frac{-1}{2}$

$m_2 = -\frac{1}{2}$

By comparison:

$m_1 = m_2 = -\frac{1}{2}$

This implies that both lines have the same slope

8 0

3 years ago

Graph the solution to the inequality on the number line : q < 69.5

liq [111]

Answer:

hopes this helps :]

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2 years ago

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7(3x + 5y)<br> Simplify this expression please!

lbvjy [14]

Answer:

21x + 35y

Step-by-step explanation:

Distribute the 7 to everything in the parentheses.

7*3=21

7*5=35

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3 years ago

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Marta_Voda [28]

19 percent, because holiday is given therefore you just take the percentage of the parking lot <span />

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3 years ago

Help picture below problem 16

kirill115 [55]

Answer:

Regular Hexagon

Step-by-step explanation:

There are six sides and all sides are equal

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2 years ago