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Bond [772]
3 years ago
13

The coordinates of the vertices of quadrilateral ABCD are A(-5, 1), B(-2,5), C(5, 3),

Mathematics
2 answers:
sladkih [1.3K]3 years ago
6 0

Step-by-step explanation:

To calculate a slope, we need to apply: m=\frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

Applying formula to each slope:

m_{AB}=\frac{5-1}{-2-(-5)} = \frac{4}{3}  \\m_{BC}=\frac{3-5}{5-(-2)} =\frac{-2}{7}\\m_{CD}=\frac{-1-3}{2-5}=\frac{-4}{-3} =\frac{4}{3}

So, as you can see, there are equal pair of slopes, meaning that they are parallels, which<em> demonstrate that it's actually a quadrilateral figure.</em>

GenaCL600 [577]3 years ago
5 0

Answer: slope (AB)= 4/3 slope(BC)=-2/7 slope(CD) =4/3 slope(AD) = -2/7

Step-by-step explanation:

To find the slope, lets take a pair ones after the other

A(-5, 1) B(-2,5)

Given; x₁ =-5 y₁ = 1 x₂=-2 y₂=5

slope(AB) = y₂ - y₁ / x₂ - x₁

=5 - 1 / -2--5

=4/3

slope BC

B(-2, 5) c(5,3)

Given;

x₁=-2 y₁=5 x₂=5 y₂=3

slope(BC) = y₂ - y₁ / x₂ - x₁

= 3-5 / 5--2

=-2/7

slope CD

C(5, 3) D(2, -1)

Given;

x₁ = 5 y₁ = 3 x₂ = 2 y₂= -1

slope(CD)= y₂ - y₁ / x₂ - x₁

= -1-3 / 2-5

= -4/-3

= 4/3

slope AD

A(-5, 1) D(2, -1)

Given;

x₁ = -5 y₁ =1 x₂ =2 y₂ =-1

slope(AD) = y₂ - y₁ / x₂ - x₁

= -1-1 / 2--5

= -2/7

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jamie wants to run a total of 9 miles thid week. so far, she has run 4 5/8 miles. use the equation 4 5/8 + r = 9​. please help m
____ [38]

Answer:

r=4\frac{3}{8}

Step-by-step explanation:

Given the following question:

4\frac{5}{8} +r=9

<u>Rewrite the expression to find the value of r:
</u>
9-4\frac{5}{8}

<u>Subtract by finding the common denominator:</u>
9-4\frac{5}{8}
9=\frac{9}{1}
4\frac{5}{8} =8\times4=32+5=37=\frac{37}{8}
\frac{9}{1} -\frac{37}{8}
\frac{9}{1} \times8=\frac{72}{8}
\frac{37}{8} \times1=\frac{37}{8}
\frac{72}{8} -\frac{37}{8}
72-37=35
=\frac{35}{8}
\frac{35}{8} =35\div8=4\frac{3}{8}
r=4\frac{3}{8}
4\frac{5}{8} +4\frac{3}{8} =9

Hope this helps.

4 0
2 years ago
Using the slope and the y intercept, graph the line represented by the following equation.
PtichkaEL [24]
Beforehand let me apologize for my sloppy handwriting. I'm a lefty, so please deal with me. . Anyway, the equation you listed didn't really have a x, because a linear equation is y= mx+b, and anything with x is the slope. But I did see y and a number on one side, so I'm like maybe I can get these two alone. So here's what I did:

2y + 4=0
-4 -4 I subtracted 4 on both sides. Why because you would want "y" alone.
Next,
2y= -4
Now to get "y" alone you want to divide on both sides.
2y= -4/ 2
y= -2
Now you're probably thinking "how do you graph it? There's no "x" in the equation." Well, you just graph it. Since the answer is y= -2, you go to the y axis, look for -2, and place a line to indicate that is the equation. And to make it clear, remember y is the y-intercept.

I really do hope this helps you, if not message me. I'll be happy to help, and again I'm sorry for my handwriting!



4 0
3 years ago
Read 2 more answers
Jordan is putting a fence around a garden that is shaped like a half circle and rectangle
grin007 [14]

Answer:

92 ft  

Step-by-step explanation:

Assume the garden has the shape shown below.

The length of fencing equals the distance around three sides of the rectangle plus that around the semicircle.

1. Around the rectangle

Distance = 28 ft + 14 ft + 28 ft = 70 ft

2. Around the semicircle

For a circle.

C = 2πr

For the semicircle,

½C =½(2πr) = πr  

D = 14 ft, so

r =    7 ft

\text{Distance} = \dfrac{22}{7} \times \text{7 ft} = \text{22 ft}

3. Total distance

Distance = 70 ft + 22 ft = 92 ft

Jordan will need 92 ft of fencing.

 

8 0
3 years ago
Can someone help with this question
KatRina [158]
I think it’s 7 Becuase the Ae and DE are congruent
4 0
2 years ago
Please help me I have been stuck for a while now
luda_lava [24]

Answer:

Option 3

Step-by-step explanation:

Pythagorean Theorem:

A^2 + B^2 = C^2 \\\\300^2 + 400^2 = 500^2

3 0
3 years ago
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