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3 years ago

Which statement explains how you could use coordinate geometry to prove the diagonals of a quadrilateral are perpendicular?

Mathematics

2 answers:

kiruha [24]3 years ago

7 0

Answer:

(B)Use the slope formula to prove the slopes of the diagonals are opposite reciprocals.

Step-by-step explanation:

Two lines are perpendicular if the product of their slope is -1. That is, the slope of one is the opposite reciprocal of the other.

Mathematically, if their slopes are $m_1\: and \:m_2, then:$

$m_1m_2=-1\\m_1=-\dfrac{1}{m_2}$

<u>Therefore, the correct option is B.</u>

Temka [501]3 years ago

3 0

Answer:

Step-by-step explanation:

I took the quiz and got the answer correct.

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Solving Linear Equations involving Distribution

bearhunter [10]

Answer:

-4

Step-by-step explanation:

3.4+2(9.7-4.8x)=61.2

2(9.7-4.8x)=61.2-3.4

2(9.7-4.8x)=57.8

9.7-4.8x=57.8/2

9.7-4.8x=28.9

4.8x=9.7-28.9

4.8x=-19.2

x=-19.2/4.8

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3 years ago

I need help on my 3.3.6 Journal: Breakdown Ahead apex.

insens350 [35]

Answer:

pg. 1

teresa: use difference of 2 squares

rico: 6561 is not a perfect square

pg. 2

i think teresa is right and that 6561 can be broken down

problem 1: (x^4-81)^2=(x^2-9)^4=(x-3)^8

problem 2: a. false b. rico

pg. 3

problem 3: a. -1(3x+5)^2 b. teresa is right because it cant still be a perfect square trinomial while having a negative first term.

problem 4: a. (y+3)^2 b. teresa

pg. 4

problem 5: a. (x^n+y^n)(x^n-y^n) b. teresa

teresa got more right, rico is buying pizza

Step-by-step explanation:

apex

7 0

3 years ago

Please answer the question in the image

seraphim [82]

Answer:

- $\frac{1}{14}$

Step-by-step explanation:

Given

$\frac{1}{2}$ × - $\frac{1}{7}$ ( multiply numerators and denominators together )

= - $\frac{1(1)}{2(7)}$

= - $\frac{1}{14}$

7 0

3 years ago

I need help. Can someone please help??

Elza [17]

Answer:

D is the right answer

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Find two numbers whose product is 110, and whose sum is 21.

shutvik [7]

Answer:

10 and 11

$10 \times 11 = 110$

$10 + 11 = 21$

6 0

2 years ago