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8_murik_8 [283]
2 years ago
5

Write the quadratic equation in standard form: -3x^2-16=−3x

Mathematics
2 answers:
Scorpion4ik [409]2 years ago
8 0
  • -3x²-16=-3x

Standard form ax²+bx+c=0

  • -3x²+3x=16
  • -3x²+3x-16=0
  • 3x²-3x+16=0

Done

Softa [21]2 years ago
4 0

Answer:

<u>3x² - 3x + 16 = 0</u>

Step-by-step explanation:

Standard form :

  • Ax² + Bx + C = 0

Solving :

  • -3x² - 16 = -3x
  • <u>3x² - 3x + 16 = 0</u>
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Sabina bought a samsung mobile set for rs.15750 after getting the discount of 10%. Find the price of mobile set before discount.
Elanso [62]

Answer:

Step-by-step explanation:

90/100 * x = 15750

0.9 x = 15750

x = 15750/0.9

x = 17500

Now check this by taking 10% off. Do you get 15750?

Let's see

10/100 of 17500 = 1750

Subtract that from 17500

17500 - 1750 = 15750 which is exactly what you should get.

7 0
3 years ago
Please answer thanks!
Drupady [299]
If you divide 13 by 3 you get 4 1/3 then you subtract 25 by 4 1/3 to get 20 2/3 so the answer is B
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3 years ago
Please help with this &amp; show your working out to get brainliest. And please don’t trick me.
timurjin [86]
The lowest is the square root of 9 which is 3. After that is 3.15, 13/4 (3.25), 3 1/2 (3.50). My explanation would be: first I found out the square root of 9. Then divided 13 by 4.
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3 years ago
in circle T with m angle STU=50 and ST=3 units, find the length of arc SU. Round to the nearest hundredth.
ICE Princess25 [194]

9514 1404 393

Answer:

  arc SU ≈ 2.62 . . . units

Step-by-step explanation:

The arc length is given by ...

  s = rθ

where r is the radius, and θ is the central angle in radians.

  arc SU = ST·STU = 3·(50°·π/180°) = 5π/6

  arc SU ≈ 2.62 . . . units

6 0
3 years ago
The diagram shows 3 identical circles inside a rectangle.
Ilya [14]

Answer:

11700 mm²

Step-by-step explanation:

A rectangle is a quadrilateral with two equal, opposite and parallel sides. Each of the angles in a rectangle is 90°.

The horizontal distance of the rectangle = r + r + r + r = 4r

The vertical distance = r + h + r = 2r + h

Where h is the distance between the midpoint of the 2 up circles and the midpoint of the down circle.

Using Pythagoras:

 (2r)² = h² + r²

h² + r² = 4r²

h² = 3r²

h = √3r²

h = r√3

Vertical distance = 2r + h = 2r + r√3

Area of rectangle = vertical distance * horizontal distance

Area = 4r * (2r + r√3) = 8r² + 4r²√3 = 4r²(2 + √3)

Substituting:

Area = 4r²(2 + √3) = 4(28²)(2 + √3) = 11703.711 mm²

Area = 11700 mm² to 3 s.f

5 0
2 years ago
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