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Leya [2.2K]
3 years ago
12

Can anyone solve this ?

Mathematics
1 answer:
enot [183]3 years ago
6 0
Is e just an algebraic expression or is it Euler's number (2.718...)?

If e is an algebraic expression then there it is

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GCSE maths question about the turning point of the graph.<br> please help!
Neporo4naja [7]

Answer:

The coordinates of the turning point are (2, -9)

Step-by-step explanation:

The coordinates of the turning points of the quadratic equation

y = ax² + bx + c, are (h, k), where

  • h = \frac{-b}{2a}
  • k is the value of y at x = h

∵ The equation of the curve is y = x² + bx + c

→ By comparing it with the form above

∴ a = 1

∵ The point (0, -5) lies on the curve

→ Substitute x by 0 and y by -5 in the equation to find the value f c

∵ -5 = (0)² + b(0) + c

∴ -5 = 0 + 0 + c

∴ -5 = c

→ Substitute it in the equatin

∴ y = x² + bx - 5

∵ The point (5, 0) lies on the curve

→ Substitute x by 5 and y by 0 in the equation to find the value f c

∵ 0 = (5)² + b(5) - 5

∴ 0 = 25 + 5b - 5

→ Add the like terms in the right side

∴ 0 = 20 + 5b

→ Subtract 5b from bth sides

∵ 0 - 5b = 20 + 5b - 5b

∴ -5b = 20

→ Divide both sides by -5 to find b

∴ b = -4

→ Substitute it in the equatin

∴ y = x² - 4x - 5

∵ a = 1 and b = -4

→ Substitute them in the rule of h above t find it

∵ h = \frac{-(-4)}{2(1)} = \frac{4}{2}

∴ h = 2

→ To find k, substitute x by 2 and y by k

∵ k = (2)² - 4(2) - 5

∴ k = 4 - 8 - 5

∴ k = -9

∴ The cordinates of the turning point are (2, -9)

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3 years ago
Patrick has seen 4 ACTION movies, 1 ANIMATED movie, 3 COMEDY movies, and 2 DRAMA movies. Determine the ratio of comedies to the
GaryK [48]
The answer is 3:10.

You add all the movies together, then place the Comedy number first because they ask you to state comedy TO total
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20 Ib/day = ____ oz/h
Ulleksa [173]

The answer should be 320 oz.

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3 years ago
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Bogdan [553]

Answer: Its B

Step-by-step explanation:

3 0
3 years ago
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5.4p+13.1=−2.6p+3.5 <br> p=?
mote1985 [20]

Answer:

P= - 16/11 or P= - 1 5/11 or P= - 1.45455

Step-by-step explanation:

Just trust my answer

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