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3 years ago

Do all parallelograms have reflectional symmetry? explain your reasoning?

Mathematics

1 answer:

shepuryov [24]3 years ago

6 0

Rhombus, rectangle, square these have lines of symmetry. others i am not much sure

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A line segment has a midpoint of (7, 1/2) If one endpoint is (5,3), what is the other endpoint?

Tanya [424]

So if 7 is the middle x-value, you calculate how far it is from the given endpoint in order to determine how far it is from the other endpoint. So,

7 -5 =2, so the other endpoint must be 2 away from 7 in the opposite direction, 7+2=9

Then repeat with y,

3-1/2=5/2, therefore 1/2 - 5/2 = -4/2= -2

So the point is (9, -2)

5 0

3 years ago

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If f(x) = -χ^3 + χ^2 + x, find f(-3). Answers -39 -21 15 33

Minchanka [31]

Answer:

Step-by-step explanation:

To evaluate f(- 3) substitute x = - 3 into f(x)

f(- 3) = - (- 3)³ + (- 3)² + (- 3) = - (- 27) + 9 - 3 = 27 + 9 - 3 = 33

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3 years ago

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Creed wanted to know if there was a correlation between number of years of education and income. He collected data and created t

Trava [24]

Like CREED creed? cus we just talked and he denied all of this

5 0

2 years ago

Given: AABC, m_ACB=90°, CD 1 AB, m ZACD=60º, BC = 6 cm Find: CD, Area of AABC

just olya [345]

Answer:

Look below

Step-by-step explanation:

Given that CDB is 90 degrees, ACB is 90 degrees, and ACD is 60 degrees, we can determine that DCB = 90-60 = 30 degrees.

This means triangle BCD is a 30-60-90 (angle measures) right triangle

The proportions of the sides (from smallest to largest) is

x:x√3:2x

We are given that BC = 6 cm. This means...

2x=6

x=3

This means DB is 3 cm and CD is 3√3 cm

Using the linear pair theorem, we can find that Angle CDA is 90 degrees. This means ACD is also a 30-60-90 triangle.

x=3√3

x√3=9

2x=6√3

Now we need to find AB

AB = AD + DB

AB = 9 + 3

AB = 12 cm

$Area = \frac{1}{2} bh = \frac{1}{2}(12)(3\sqrt3)=6(3\sqrt3)=18\sqrt3$

8 0

2 years ago

Is 11/50 and 0.22 equivalent?

ozzi

11/50=1.1/5=0.22

They are indeed equivalent.

5 0

3 years ago