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Alex777 [14]
3 years ago
14

What are the coordinates of D’ when the quadrilateral is reflected across the line y = x? On a coordinate plane, quadrilateral A

B C D has points (1, 2), (2, 4), (4, 3), (3, 1). A(1, 3) B (2, 4) C(3, 4) D(1, 1)
Mathematics
1 answer:
natita [175]3 years ago
7 0

Answer:

D' (1, 3)

Step-by-step explanation:

When reflected across the y = x line, the "x" and "y" coordinates switch.

If D is (3, 1), then:

x = 3

y = 1

Switch the "x" and "y" values, and rewrite as (x, y).

x = 1

y = 3

D' (1, 3)

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\textit{area of a triangle}\\\\ A=\cfrac{1}{2}bh \begin{cases} b=base\\ h=height\\[-0.5em] \hrulefill\\ b=6\\ h=8 \end{cases}\implies A=\cfrac{1}{2}(6)(8)\implies A=\text{\LARGE 24}~cm^2

8 0
1 year ago
What is 2y^3 when y=4
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3 years ago
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3 years ago
A restaurant has a total of 30 tables which are of two
Anna007 [38]

Answer:

Total number of tables of first type       = 23.

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Step-by-step explanation:

It is given that there are 30 tables in total and there are two types of tables.

Let's call the two seat tables, the first type as x and the second type as y.

∴                                             x + y = 30                        ......(1)

Also a total number of 81 people are seated. Therefore, 2x number of people would be seated on the the first type and 5y on the second type. Hence the equation becomes:

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To solve (1) & (2) Multiply (1) by 2 and subtract, we get:

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Substituting y = 7 in (1), we get x = 23.

∴ The number of tables of first kind         = 23

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3 years ago
An elevator has weight limit of 1 ton. There are 3 people inside the elevator. Each person weighs 150 pounds. How many pounds ca
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Answer:

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