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RUDIKE [14]
3 years ago
10

Quadrilateral A B D C is shown. In quadrilateral ABDC, AB ∥ CD. Which additional piece of information is needed to determine tha

t ABDC is a parallelogram? AB ≅ CD AC ≅ BD AB ⊥ BD CD ⊥ BD
Mathematics
2 answers:
tatiyna3 years ago
6 0

Answer:

its a

Step-by-step explanation:

Anna71 [15]3 years ago
3 0

Step-by-step explanation:

For any quadrilateral to be a parallelogram

i) either both the pairs of opposite sides must be equal

ii) Both the pairs of opposite sides must be parallel

iii) Opposite pairs of angles must be equal

iv) Diagonals must bisect each other.

v) A pair of opposite sides must be parallel and equal

Here we are already given that AB || CD

So either we should be given that AD || BC

or we must be given that AB = CD

Here it is given AB = CD as an option.

So Option A) or the first option is the right answer that AB ≅CD is needed to prove ABCD is a parallelogram

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olga55 [171]

Answer:

\frac{3}{2} g/cm²

Step-by-step explanation:

First, we need to find the volume of the prism. The volume of a square pyramid is V = Bh/3

B = 100 cm²

h = 6 cm

V = 100 cm² * 6 cm /3

V = 600 cm³ /3

V = 200 cm³

Next, we need to solve for the density based on the desired volume and mass.

m = mass = 300 g

V = volume

density = m/V

density = 300 g / 200 cm³

density = 3/2 g/cm³

The lowest possible density of the material to make the paperweight would be \frac{3}{2} g/cm²

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3 years ago
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3 years ago
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a ladder needs to reach a second story window that is 13 ft above the ground and make an angle with the ground of 68°....​
ollegr [7]

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Step-by-step explanation:

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8 0
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A three-centimeter cube has been painted red on all sides. it is cut into one centimeter cubes. how many cubes will be there wit
Likurg_2 [28]

There will be only 6  cubes with only one side painted red.

Cube : A cube is a 3D shape having 6 equal square sides. it has 6 faces , 8 vertices and 12 edges.

According to the question

A 3 cm cube is divided into one centimeter cube.

Every face will have 9 cube each and from that 9 cube there will be only one 1 cube that will have one side painted red.

Since there are 6 faces,

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Therefore , There will be only 6  cubes with only one side painted red.

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Next week your math teacher is giving a chapter test.
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Answer:

15

Step-by-step explanation:

35-20= 15

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