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DerKrebs [107]
1 year ago
14

Quick algebra 1 question for 10 points!

Mathematics
1 answer:
Rus_ich [418]1 year ago
8 0

Answer:

109x

Step-by-step explanation:

We know that there are 109 students in the fourth grade, who each have x cupcakes. In order to find the total amount of cupcakes, we could add all of the cupcakes together to get:

x + x + x + x + .... x

109 times because there are 109 students.

This can be simplified to become 109x.

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I need help with this question please
german

Answer:

C.

Step-by-step explanation:

Given

A =(x_1,y_1)

B =(x_2,y_2)

C =(x_3,y_3)

D =(x_4,y_4)

Required:

Which condition proves that AB is perpendicular to CD

First, calculate the slopes of both.

<u>For AB</u>

m_1 = \frac{y_2 -y_1}{x_2 - x_1}

<u>For CD</u>

m_2 = \frac{y_4 -y_3}{x_4 - x_2}

The condition of perpendicularity is:

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Substitute values for m1 and m2

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Option (c) is correct

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