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3 years ago

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Mathematics

1 answer:

WINSTONCH [101]3 years ago

4 0

9514 1404 393

Answer:

A. CCW 180° about the origin

Step-by-step explanation:

Figure B appears to be a reflection of Figure A across the origin. Such a reflection can be described by any of ...

reflection across the origin
rotation 180° CW about the origin
rotation 180° CCW about the origin
reflection across the x-axis followed by reflection across the y-axis
reflection across the y-axis followed by reflection across the x-axis.

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inysia [295]

Wait what try using photomath it helps explain and gives the answer.

3 0

3 years ago

6. m A = 8x - 2, m B = 2x - 8, and m2 C = 94 - 4x. List the sides of A ABC in order from shortest to

Oduvanchick [21]

Given:

In triangle ABC, m∠A=(8x-2)°, m∠B=(2x-8)° and m∠C=(94-4x)°.

To find:

The sides of the triangle ABC in order from shortest to longest.

Solution:

In triangle ABC,

$m\angle A+m\angle B+m\angle C=180^\circ$ (Angle sum property)

$(8x-2)^\circ+(2x-8)^\circ+(94-4x)^\circ=180^\circ$

$(6x+84)^\circ=180^\circ$

$6x+84=180$

$6x=180-84$

$6x=96$

Divide both sides by 6.

$x=\dfrac{96}{6}$

$x=16$

Now,

$m\angle A=(8(16)-2)^\circ$

$m\angle A=(128-2)^\circ$

$m\angle A=126^\circ$

Similarly,

$m\angle B=(2(16)-8)^\circ$

$m\angle B=(32-8)^\circ$

$m\angle B=24^\circ$

And,

$m\angle C=(94-4(16))^\circ$

$m\angle C=(94-64)^\circ$

$m\angle C=30^\circ$

In a triangle the smaller angle has shorter opposite side and larger angle has longer opposite side.

$24^\circ$

$m\angle B$

$AC$

List the sides of triangle ABC in order from shortest to longest is AC:AB:BC.

Therefore, the correct option is A.

6 0

3 years ago

49<br> a = 16, c= 20, b=

Vaselesa [24]

Answer:

b=13

Step-by-step explanation:

cause 16+20+13=49

4 0

4 years ago

If DE=3x+7, EF=2x-3 and DF=7x-9, find DF

Lunna [17]

Answer:

So -63 isn't the right answer. It is either 6.5 or 13/2 based on how your teacher wants the answer.

Step-by-step explanation:

I did the work to show you how i got there. It is definitely not -63. I hope this helps!

5 0

3 years ago

At noon, a tank contained 5 cm of water. After several hours, it contained 4 cm of water. What is the percent decrease of water

dolphi86 [110]

Answer:

2cm I think sorry If its wrong

6 0

3 years ago