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Citrus2011 [14]

3 years ago

6

If you reflect ABCD across x-axis, what will be the coordinates of A’ and C’

2 answers:

disa [49]3 years ago

8 0

Answer:

A (1, -5), B (2, -5)

Troyanec [42]3 years ago

4 0

Answer:

A(1,-5) C (2,-2)

Step-by-step explanation:

Whenever you are reflecting across the x-axis, just visualize the same thing upwards or downwards. In this case, we will have to go downwards. To reflect from the x-axis, A (which‘s ordered pair is (1,5)) would become (1,-5). Same with C (which’s ordered pair is (2,2))) would become (2,-2).

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Angle C is 60 degrees and angle CAB is 78 we need to find angle DAB

ioda

Answer:

∠ DAB = 48°

Step-by-step explanation:

The sum of the 3 angles in Δ ACD = 180° , then

∠ CAD + 60° + 90° = 180° , that is

∠ CAD + 150° = 180° ( subtract 150° from both sides )

∠ CAD = 30°

Then

∠ DAB + ∠ CAD = ∠ CAB

∠ DAB + 30° = 78° ( subtract 30° from both sides )

∠ DAB = 48°

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2 years ago

Comment trouver une équation à partir de tableaux de valeurs?

BlackZzzverrR [31]

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2 years ago

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8 0

2 years ago

Both circle A and circle B have a central angle measuring 50°. The area of circle A's sector is 36π cm2, and the area of circle

slega [8]

Answer:

A) 3/4

Step-by-step explanation:

Given: Both circle A and circle B have a central angle measuring 50°.

The area of circle A's sector is 36π cm2.

The area of circle B's sector is 64π cm2.

We know, area of the circle= $\pi r^{2}$

lets assume the radius of circle A be " $r_1$ " and radius of circle B be " $r_2$ "

As given, Area of circle A and B´s sector is 36π and 64π repectively.

Now, writing ratio of area of circle A and B, to find the ratio of radius.

⇒ $\frac{\pi r_1^{2} }{\pi r_2^{2} } = \frac{36\pi }{64\pi }$

Cancelling out the common factor

⇒ $\frac{r_1^{2} }{r_2^{2} } = \frac{36 }{64}$

⇒ $(\frac{r_1 }{r_2} )^{2} = \frac{36 }{64}$

Taking square on both side.

Remember; √a²= a

⇒ $(\frac{r_1 }{r_2} ) =\sqrt{ \frac{36 }{64}}$

⇒ $(\frac{r_1 }{r_2} ) = \frac{6}{8}$

⇒ $\frac{r_1 }{r_2} = \frac{3}{4}$

Hence, ratio of the radius of circle A to the radius of circle B is 3:4 or 3/4.

5 0

3 years ago

Please help fast asap

Lena [83]

Answer: 47 degrees

Step-by-step explanation:

7x-9=4x+15 because of the vertical angle rule

7x-9=4x+15

3x=24

x= 8

So the angle 7(8)-9 = 47°

6 0

2 years ago

Read 2 more answers