1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mice21 [21]
2 years ago
10

Hello i need help with these questions asap!!

Mathematics
1 answer:
makvit [3.9K]2 years ago
3 0

We use direct proportionality:

360⁰......Pi×R² (full circle)

120⁰.......x

x=120×pi×R²/360=pi×R²/3

x=pi×4²/3=16.76mi²

A=3×pi cm², for an angle of 2×pi/3=120⁰

In a similar way we compute the area of the full circle:

360.........x

120..........3×pi

x=3×pi×360/120=9×pi=3²×pi.

Thus the radius is 3cm.

You might be interested in
PLEASE HELP!! If f (x) = 4x^-2 + 1/4x^2 + 4, then f’(2) =
Elena-2011 [213]
<h3>Answer: D) 0</h3>

Work Shown:

f(x) = 4x^(-2) + (1/4)x^2 + 4

f ' (x) = 4*(-2)x^(-3) + (1/4)*2x .... power rule

f ' (x) = -8x^(-3) + (1/2)x

f ' (2) = -8(2)^(-3) + (1/2)*(2)

f ' (2) = 0

4 0
3 years ago
A ball pit has 1000 red balls, 500 green balls, and 100 yellow balls. If a ball randomly gets picked from the pit, what is the p
marta [7]

Answer:

there is a .0625% chance of getting yellow

Step-by-step explanation:

7 0
2 years ago
Suppose that f(x)=x^2 and g(x)= -4/5x^2 which statement best compares the graph of g(x) with the graph of f(x)
Cloud [144]
G(x) is f(x) rotated about the x-axis and then compressed vertically by a factor of 4/5.
5 0
3 years ago
Read 2 more answers
What is the answer to 5x=37-5/7
loris [4]
X = (37 - 5/7)/5 = 7.26 
7 0
3 years ago
Read 2 more answers
Use two 2-Column proofs to show that either diagonal of a rectangle will create two congruent triangles?
tangare [24]
<span>Given: Rectangle ABCD 
Prove: ∆ABD≅∆CBD 
Solution:
                      
           <span> Statement                                       Reason 
</span>
  ABCD is a parallelogram          Rectangles are parallelograms since the                                                          definition of a parallelogram is a quadrilateral                                                    with two pairs of parallel sides.

Segment AD = Segment BC       The opposite sides of a parallelogram are     Segment AB = Segment CD       congruent. This is a theorem about the                                                              parallelograms.

</span>∆ABD≅∆CBD                             SSS postulate: three sides of ΔABD is                                                           equal to the three sides of ∆CBD<span>


</span><span>Given: Rectangle ABCD 
Prove: ∆ABC≅∆ADC
</span>Solution:
                      
           <span> Statement                                       Reason 
</span>
    Angle A and Angle C                 Definition of a rectangle: A quadrilateral     
        are right angles                      with four right angles.

        Angle A = Angle C                 Since both are right angles, they are                                                                  congruent

Segment AB = Segment DC       The opposite sides of a parallelogram are     Segment AD = Segment BC       congruent. This is a theorem about the                                                              parallelograms.

            ∆ABC≅∆ADC                   SAS postulate: two sides and included                                                         angle of ΔABC is congruent to the two                                                         sides and included angle of ∆CBD
6 0
3 years ago
Other questions:
  • Chris tried to rewrite the expression \left( 4^{-2} \cdot 4^{-3} \right)^{3}(4
    5·1 answer
  • What does this sign mean?
    10·1 answer
  • Oakdale Middle School received 240 contributions for its bake sale. Of 30% of the contributions were pies, how many pies did the
    10·1 answer
  • Complete the table below to identify the pattern. Find the maximum
    13·1 answer
  • The zeros of a parabola are 6 and -5. If (-1,3) is a point on the graph, which equation can be solved to find the value of
    14·1 answer
  • Learn with an example
    7·1 answer
  • Please help me im giving a homeless Camel CPR so im kinda pre occupied
    10·1 answer
  • Does anyone know answers?
    9·2 answers
  • PLEASE HELP THANKS.
    5·2 answers
  • Write a graph an inequality to represent each situation:the temperature today will be at least 10 degrees
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!