3 years ago

Heeeeellllllpppppppp PLZ FAST

Mathematics

1 answer:

grin007 [14]3 years ago

6 0

The answer to this question is b

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A shoe store uses a 60% markup for all of the shoes it sells. What would be the selling price of a pair of shoes that has a who

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I think it would be $81.60

Step-by-step explanation:

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Solve this for Brainliest! See the attachment [Level - GCSE]

madreJ [45]

Answer:

$x = 3 + 4\sqrt{3}$

Step-by-step explanation:

OPQ is a right angle triangle.

Using Pythagoras

$x^{2} + (x+5)^{2} = (x+8)^{2}\\x^{2} + x^{2} + 10x +25 = x^{2} + 16x + 64\\x^{2} + x^{2} - x^{2} + 10x - 16x + 25 - 64 = 0\\x^{2} - 6x -39 = 0$

Using quadratic formula

$x = \frac{-b \± \sqrt{b^{2}-4ac}}{2a}\\x = \frac{-(-6) \± \sqrt{(-6)^{2}-4(1)(-39)}}{2(1)}\\x = \frac{6}{2} \± \frac{\sqrt{192}}{2}\\x = 3 \± \frac{8\sqrt{3}}{2}\\x = 3 \± 4\sqrt{3}$

$x = 3 + 4\sqrt{3} = 9.928(4s.f.)$

$x = 3 - 4\sqrt{3} = -3.928(4s.f.)$ (Length can't be negative)

∴ $x = 3 + 4\sqrt{3}$

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2 years ago

Read 2 more answers

Name a pair of lines that apear to be parallel

Nitella [24]

The sides of a square or rectangle

8 0

3 years ago

Write-6/11 ×3/4 please answer quick

m_a_m_a [10]

-6/11 ×3/4
=> -6*3/11*4
=> -18/44
=> -9/22

Hope it helps !!!

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3 years ago