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3 years ago

How to solve parabolas on a graph

2 answers:

7 0

Look at the turning point and put the co-ordinated into completed square form then break the brackets .

Example : say the turning point was (4 , 11)

Completed square form : (x +2) ^2 +7

Break the brackets and factorise

X^2 + 4x + 7

Sorry if its wrong

Nata [24]3 years ago

3 0

sorry if this answer wrong

Parabolic antenna is a device Digital FTA TV and Radio broadcast receivers that transmit it via satellite as free to air, with this device, the TV signal reception is not affected anymore by the surrounding environment such as trees, mountains and so forth.

Other advantages that we can enjoy with one of these digital devices is the quality of the resulting images and sound, no matter how good the picture and sound produced by analog antenna (antenna UHF and VHF) still can not collate the quality of picture and sound Digital Antenna Parabola. Even now there are parabolic antenna device capable of receiving broadcast digital HDTV (high-definition television)

Her general FTA Digital Satellite dish antenna consists of four main parts:
1. SOLID DISH Parabola
2. LNB (Low Noise Block Converter).
3. DiSCq (Digital Satellite Equipment Control).
4. Receiver DVB (Digital Video Broadcasting) FTA (Free To Air).

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Can someone help me? Thanks! :)

attashe74 [19]

Answer:

75 is the length of the third side

7 0

3 years ago

Read 2 more answers

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Maurinko [17]

Answer:

You know this because $110x20%=$22.

3 0

2 years ago

Enrique and Yolanda collected 500 pieces of candy on Halloween. They gave half of their candy to charity. Yolanda took 180 piece

777dan777 [17]

The answer would be C. (He counted Yolanda's candy as his own).

This is found by multiplying 500 (starting number of candy) and .64 (percentage divided by a hundred). Thjs would guve you 320, which you would then subtract from the starting number of candy (500) to get 180. 180 is Yolanda's number of candy, which gives you the answer.

4 0

3 years ago

CAN SOMEONE PLEASE HELP ME WITH THIS QUESTION

Murljashka [212]

Answer:

The value of DC is 66.34.

Step-by-step explanation:

The triangles ABC and DCA are right angled triangles.

The straight line AC is a bisector for angles C and A.

The measure of ∠C is 30°.

Then the measure of angles BCA and ACD will be 15° each.

The measure of angle DAB is 150°.

Then the measure of angles DAC and BAC will be 75° each.

Now consider the right angled triangle ABC.

The measure of side AC is:

$AC^{2}=AB^{2}+BC^{2}\\AC=\sqrt{AB^{2}+BC^{2}}\\=\sqrt{4^{2}+(10\sqrt{3})^{2}}\\=\sqrt{316}$

Consider the right angled triangle DCA.

The angle DAC measure 75°.

Using the trigonometric identities compute the value of Perpendicular DC as follows:

$tan\ 75^{o}=\frac{DC}{\sqrt{316}}\\\\DC=3.732\times\sqrt{316}\\\\DC=66.34$

Thus, the value of DC is 66.34.

7 0

3 years ago

The figure below has a perimeter of 20 cm. Jinaiya wants to scale this figure by a factor of 0.75

Dmitrij [34]

Answer:

15cm

Step-by-step explanation:

scale factor =image diatace/object distance

0.75=x/20

0.75×20=x

15=x

: .x=15cm

4 0

3 years ago