Can someone help me with this?

Answer:

Thus, the ratio of the central angles is 4 : 9.

Step-by-step explanation:

Area, A = 12 π square units

radius, R = 6 units

radius, r = 4 units

Area of sector is given by

[tex]A=\frac{\theta }{360}\times \pi r^{2}[/tex]

For first sector

[tex]12\pi=\frac{\theta }{360}\times \pi \times 6^{2}\\\\\theta = 120^{o}[/tex]

For second sector

[tex]12\pi=\frac{\theta' }{360}\times \pi \times 4^{2}\\\\\theta' = 270^{o}[/tex]

So, the ratio is

[tex]\frac{\theta}{\theta'}=\frac{120}{270} =4 : 9[/tex]

Answer:

4 : 9

Step-by-step explanation:

Given:

Two sectors, each has an area of 12pi, but with radii r1=6 and r2=4 units.

Find ratio of central angles.

Solution:

Let A = central angle

Area of a sector = pi r^2 (A/360)

Since both sectors have the same area,

pi r1^2 (A1/360) = pi r2^2 (A2/360)

simplifying

A1 r1^2 = A2 r2^2

Therefore

A1 : A2  = r2^2 : r1^2 = 4^2 : 6^2 = 4 : 9

Answer:

3/7 is the probability that the teacher will randomly select a boy.

Hope this helps! :)

The probability that the teacher randomly selects a boy is 3/7

The given parameters are:

Boy = 6

Girls = 8

The total number of students is:

Total = 6 + 8 = 14

The probability of selecting a boy is:

P(Boy) = 6/14

Simplify

P(Boy) = 3/7

Hence, the probability that the teacher randomly selects a boy is 3/7

Read more about probability at:

https://brainly.com/question/25870256

#SPJ6

Answer: Answer is in the attachment xoxo

Step-by-step explanation:Subtract

y

2

y

2

 from both sides.

16

x

−

4

y

=

−

20

−

y

2

16x−4y=−20−y

2

2 Factor out the common term

4

4.

4

(

4

x

−

y

)

=

−

20

−

y

2

4(4x−y)=−20−y

2

3 Divide both sides by

4

4.

4

x

−

y

=

−

20

−

y

2

4

4x−y=

4

−20−y

2

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4 Add

y

y to both sides.

4

x

=

−

20

−

y

2

4

+

y

4x=

4

−20−y

2

​

+y

5 Divide both sides by

4

4.

x

=

−

20

−

y

2

4

+

y

4

x=

4

4

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​

+y

​

6 Simplify  

−

20

−

y

2

4

+

y

4

4

4

−20−y

2

​

+y

​

  to  

−

20

−

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4

+

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4

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​

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+

4

y

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x

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−

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x=

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7 Simplify  

−

20

−

y

2

4

4

4

4

−20−y

2

​

​

  to  

−

20

−

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4

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16.

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Answer:

what's the question because all I see is the graph

Answer:

1.3 < x < 6.7

Step-by-step explanation:

minimum

4.0 - 2.7 = 1.3

maximum

4.0 + 2.7 = 6.7

-------------------------

1.3 < x < 6.7

Answer:

9 1/4

Step-by-step explanation:

12 3/8 - 3 1/4= 9 1/4

Answer:

The area is 452.39

The Circumference is 75.36

Step-by-step explanation:

What exactly are we trying to answer?

Answer:

yes

Step-by-step explanation:

for question 1

Area of Base B =45×25 = 1125 cm²

perimeter of base P = 2(45+25) = 140 cm

Height = 15 cm

Using the formula

Surface area = 2B + Ph

A = 2×1125 + 140×15= 4350 cm²

Voume = Bh = 1125×15= 16875 cm³

For question 2,

Area of base = 7× 5/2= 17.5 cm²

Perimeter of base = (7+7+7) = 21 cm

Surface area = 2B + Ph

Surface area of prism = 2×17.5+ 21×10 = 245cm²

Volume = Bh = 17.5×10 = 175 cm³

Answer:

Step-by-step explanation:

for question 1

Area of Base B =45×25 = 1125 cm²

perimeter of base P = 2(45+25) = 140 cm

Height = 15 cm

Using the formula

Surface area = 2B + Ph

A = 2×1125 + 140×15= 4350 cm²

Voume = Bh = 1125×15= 16875 cm³

For question 2,

Area of base = 7× 5/2= 17.5 cm²

Perimeter of base = (7+7+7) = 21 cm

Surface area = 2B + Ph

Surface area of prism = 2×17.5+ 21×10 = 245cm²

Volume = Bh = 17.5×10 = 175 cm³

Answer:

Can't

Step-by-step explanation:

Well...

We need the line plot please.

Answer:

how much km was left

Step-by-step explanation:

his whole journey length would be if u add both km

Answer:

here are the answers

Step-by-step explanation:

40. no one. The accountant is a girl.

41. neither, they're both a pound.

42. 7!

43. hole

44. widow. sad.

45. glove

46. chair, mattress, toothbrush

47. wait till the water breaks the walls but how did we get here in the first place?

48. stairs

49. I dunno

50. the wheel was invented

Answer:

[tex]\text{1. }p<1000,\\\text{2. }p>500, \\\text{3. No, 487 does not meet Lin's inequality}, \\\text{4. Yes, 742 meets both inequalities}.[/tex]

Answer: 144

Step-by-step explanation:

No need explanation

Answer:

1. Positive

2. Negative

3. Negative

4. Positive

Step-by-step explanation:

Answer:

50 degrees

Step-by-step explanation:

Answer:

50

Step-by-step explanation:

The entire angle is 80 as shown.

The value of the missing angle can be found by using the following

F=80-30

F=50

Step-by-step explanation:

132.71 x 10 with the power of 2 = 13271

Answer:

(9,3)

Step-by-step explanation:

Answer:

Your answer is -6

Step-by-step explanation:

Hope this helps :3

Answer:

The answer to the problem is -6.

Answer:

8568 ft³

Step-by-step explanation:

14 x 612 = 8568 ft³

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

We can take away the two circles from both sides. We don't know the weight of each circle, but we know that the circles on each side balance each other out. Meaning that taking away those circles does not change the balance. Similarly, we can take away two squares from each side to keep things balanced as well.

After those subtractions, we're left with 2 squares on the left side and nothing else. On the right side, we have 4 triangles only.

2 squares balance with 4 triangles, which must mean 1 square balances with 2 triangles (divide both values by 2).

If you add a square to one side, you must add 2 triangles to the other side to keep things balanced.

-----------------------

Going back to the original diagram, we can have the following on the left side

And on the right side we would have

This new configuration is balanced. I added the 2 triangles to the left side while the right side got the square.

There are other configurations possible because we can add as many squares to each side, as long as we add 2 triangles per extra square. Also, the order of the shapes on either side doesn't matter. All that matters is the total weight pulling down.

Also, we could easily add the same shape to both sides as possibly the easiest way to change the configuration. For instance, if you add a circle to both sides, then things stay balanced. So again, there are many ways to answer this.

Answer:

2.175

Step-by-step explanation:

Answer:

2.175 miles

Step-by-step explanation:

2.9 x 0.75 = 2.175

Answer:

3.5325

Step-by-step explanation:

find the area and divide it by 2

1.5*1.5*pi= 1.5*1.5*3.14= 7.065

then divide it by two= 3.5325

a= 9

b= 13

➠ 2(9+13)

➠ 2 × 22

Ans ➠ 44mm