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
CaHeK987 [17]
3 years ago
13

Sofia cuts a piece of felt in the shape of a kite for an art project. The top two sides measure 20 cm each and the bottom two si

des measure 13 cm each. One diagonal, EG, measures 24 cm. What is the length of the other diagonal, DF?

Mathematics
2 answers:
Vladimir79 [104]3 years ago
8 0

Given


Sofia cuts a piece in the shape of a kite for an art project  

top two sides measure 20 cm each  

bottom two sides measure 13 cm each.  

One diagonal, EG, measures 24 cm


Find out the length of the other diagonal, DF.


To proof  

As given in the question and also shown in the diagram shown below


DE = EF = 20cm


DG = GF = 13cm


EG = 24cm


DF = ?


In kite shape


One diagonal is the perpendicular bisector of the other diagonal.


i.e EG is the perpendicular bisector of DF


i.e EG is divided into two equal parts


thus EA = AG = 12cm


in Δ EAF


By applying the pythagorus theorem


we have


EF² = FA²+ EA²


20² = 12² + FA²


400 -144 = FA²


256 =FA²


\sqrt{256} =FA


16cm = FA


Now in Δ DAG


DG² = AG² + DA²


13² = 12 ²+ DA²


169 -144 = DA²


25 = DA²


\sqrt{25} =DA


5cm = DA


Thus diagonal DF = DA + FA


= 5 + 16


= 21cm


Hence proved




stellarik [79]3 years ago
6 0
The correct answer would be 21

 your welcome

You might be interested in
Calvin works at a facility which processes apples. It costs the facility $0. 68 to make either a jar of applesauce or a bottle o
NNADVOKAT [17]

The number of bottles the facility requires to sell when it breaks is given by

a system of two simultaneous equations.

  • When the facility breaks even, it would have sold 7<u>7,579 bottles of apples juice</u>.

Reasons:

The cost to make a jar of applesauce or a bottle of apple juice = $0.68

Number of jars of applesauce to be sold foe every 2 bottles of apple juice = 3 jars

The selling price for a jar of applesauce = $2.20

Selling price for a bottle of apple juice = $3.15

Annual overhead cost excluding production cost = $368,500

Required: Number of bottles of apple juice sold by the facility when it breaks even annually.

Solution:

Let <em>J</em> represent the number of bottles of apple juice sold, and let <em>S</em> represent the number of jars of apple sauce, by excluding the production cost, we have;

(3.15 - 0.68)·J + (2.2 - 0.68)·S = 368,500

S : J = 3 : 2

Which gives;

\displaystyle \frac{S}{J} = \mathbf{ \frac{3}{2}}

\displaystyle S= \frac{3}{2} \cdot J

Therefore;

\displaystyle (3.15 - 0.68) \cdot J + (2.2 - 0.68) \cdot S = (3.15 - 0.68) \cdot J + (2.2 - 0.68) \cdot  \frac{3}{2} \cdot J = \mathbf{368,500}

Which gives;

\displaystyle  (3.15 - 0.68) \cdot J + (2.2 - 0.68) \cdot  \frac{3}{2} \cdot J = \mathbf{ \frac{19 \cdot J }{4} } =  368,500

\displaystyle  J  =   \frac{368,500 \times 4}{19}  = \frac{1474000}{19}=77578\frac{18}{19}  \approx 77,579

The number of bottles of apple juice sold, J ≈ <u>77,579 bottles</u>

Learn more about simultaneous equations here:

brainly.com/question/10724274

7 0
2 years ago
Calcula la longitud de la variable "x"​​
Olenka [21]

Answer:

x=20

Step-by-step explanation:

30°-60°-90°Δ

a=10

b=20

c=10\sqrt{3}

x=b

x=20

7 0
3 years ago
Find the length of the third side. If necessary, write in simplest radical form. 9 5
tigry1 [53]

Step-by-step explanation:

(9) {}^{2}   = (5) {}^{2}  + (x) {}^{2}  \\ 81 = 25 +  {x}^{2}  \\  {x}^{2}  = 56 \\ x = 2 \sqrt{14}  = 7.4

7 0
3 years ago
A circular swimming pool is installed in a rectangular shaped backyard. An underwater light is placed as its center, 16 feet fro
Daniel [21]
What is the question?
8 0
4 years ago
Hal earns $5 a week doing chores for his parents. He also earns $10 a week for each dog, d, he walks
ZanzabumX [31]

Answer:

Step-by-step ex

5 0
3 years ago
Other questions:
  • What is 3/8 x 16/7? i don't know. it is for my math homework?
    6·1 answer
  • Simplify.<br><br> 2x5 - 6x2 + 4x4y<br> -------------------------<br> 2x
    7·1 answer
  • How do i solve this question
    5·1 answer
  • What is the area please help‼️‼️‼️
    5·1 answer
  • Two poles with different heights stand side-by-side. One pole is 4 meters tall, and casts a shadow that is 11 meters long. The o
    15·1 answer
  • Which expression does the fraction 3/8 equal to A. 3 times 8 B. 3 divided by eight C. 8 divided by 3 D. 3 - 8
    12·1 answer
  • The glasses that Landon and Keira bought for the party each hold 2 cups of liquid. How many ounces do each of the glasses hold?
    5·2 answers
  • Scientists have increased their ability to make observations beyond their own senses through the invention of specialized equipm
    13·1 answer
  • I need help fast thank you!!
    5·2 answers
  • Tom was measuring a piece of wood to build a shelf for his daughter. The shelf is 36 inches long. He tells his daughter, Hadlee
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!