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Helga [31]
2 years ago
10

A polygon has its vertices at the following points.

Mathematics
1 answer:
seropon [69]2 years ago
3 0

Answer:

isosceles trapezoid

Step-by-step explanation:

1) find the distance of the points

\sqrt{(x2-x1)^2 + (y2 -y1)^2}

AB = \sqrt{(4-2)^2 + (7-5)^2} = \sqrt{4 + 4} = \sqrt{8} = 2 \sqrt{2}

BC = |7-4| = 3

CD = \sqrt{(9-7)^2 + (5-7)^2}= \sqrt{4+4} = \sqrt{8} = 2 \sqrt{2}

AD = |9-2| = 7

2) equation of the line that passes threw BC

y = 7

3) equation of the line that passes threw AD

y = 5

conclusion

the quadrilateral has two parallel sides and two congruent sides, so it is a isosceles trapezoid

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Sandy spent half of her allowance going to the movies. She washed the family car and earned 9 dollars. What is her weekly allowa
Alex17521 [72]
Well since she first used half of her allowance all we do is just 9-14=5 and 5*2=10 so we now kn ow that her allowance is of 10 bucks.
4 0
3 years ago
3y^2 + 3(4y^2 - 2) please help
Butoxors [25]

The roots of the quadratic equation 3y² + 3(4y² - 2) is ± √(1/7).

<h3>What is a quadratic equaton?</h3>

A quadratic equation is an algebraic expression in the form of variables and constants.

A quadratic equation has two roots as its degree is two.

Given, 3y² + 3(4y² - 2).

3y² + 12y² - 2.

14y² - 2.

Let 14y² - 2 = 0.

14y² = 2.

y² = (2/14).

y = ± √(2/14) Or ± √(2/2×7) Or ± √(1/7).

learn more about quadratic equations here :

brainly.com/question/17177510

#SPJ1

8 0
1 year ago
Please help me and please dont put a incorrect number just for points
marin [14]

Answer:

Step-by-step explanation:

You multiply by the reciprocal of 1/5 to make the equation 1/3*5/1 to get 5/3

if u dont know this   *=multiplication

8 0
3 years ago
PLEASE HELP worth 25 points I really don’t know what I’m doing I really need help
noname [10]

Answer:

43 degrees for the first problem

Step-by-step explanation:

On the first problem we see, we are given that one angle is 231 degrees. After counting the sides of this shape, we see it is a 4-sided quadrilateral. This means that the total amount of degrees in this shape equals 360 degrees. Since each unknown degree is represented by the same value (w), we can deduce that all of these unknown angles are equal to each other.

Let's set up our problem now.

360 degrees = the amount of degrees in a quadrilateral

231 degrees = the given amount of degrees we have so far

In order to see how many degrees we have left in the quadrilateral, let's subtract the number degree we already know from the total degree number that we know: 360 - 231 = 129

Now we see that the remaining three angles have a total of 129 degrees. This doesn't mean we're done.

3 congruent angles together = 129 degrees

We need to find the degree of a single unknown angle now. This can be done by simply dividing the mass total of the three congruent angles by the amount of congruent unknown angles there are.

129/3 = 43

Our final answer is 43 degrees.

6 0
3 years ago
Please help!
IceJOKER [234]
I think it’s B. But if it’s not chose D
3 0
2 years ago
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