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2 years ago

I am confused about how to solve this with the quadratic formula and what the solutions would be

Mathematics

1 answer:

atroni [7]2 years ago

4 0

I’m pretty sure the answer is (5, 1)

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In order to ride a rollercoaster at the theme park ridersust be 52inches tall write and graph an inequality to show the safe hei

n200080 [17]

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http://misterkmath.weebly.com/uploads/1/3/8/0/13802304/8-2d_answers.pdf

Step-by-step explanation: here is the answer sheet

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2 years ago

Perimeter of triangle? need some help please!

pychu [463]

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2 years ago

Which fraction is closer to 1/2 than 1? 7/8 10/12 12/14 7/10

larisa [96]

Answer:

7/10

Step-by-step explanation:

7/8 = .875

10/12 = .833

12/14 = .857

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2 years ago

Read 2 more answers

− 2/3 a+ 6 /5 a− 6 /1 What’s the answer for this one?

bija089 [108]

8a -90
———-
15
Is the answer I think

3 0

2 years ago

Help me class8 (surds)

Mashcka [7]

Answer:

$\cfrac{991\sqrt{2} }{80}$

Step-by-step explanation:

For a start simplify each of the roots:

$\sqrt{72} =\sqrt{36*2} =6\sqrt{2}$
$\sqrt{50} =\sqrt{25*2} =5\sqrt{2}$
$\sqrt{128} =\sqrt{64*2} =8\sqrt{2}$
$\sqrt{98} =\sqrt{49*2} =7\sqrt{2}$

Now simplify the expression in steps:

$\sqrt{72}-\cfrac{48}{\sqrt{50} } -\cfrac{45}{\sqrt{128} } +2\sqrt{98} =$

$6\sqrt{2}-\cfrac{48}{5\sqrt{2} } -\cfrac{45}{8\sqrt{2} } +2*7\sqrt{2} =$

$6\sqrt{2}-\cfrac{48*8+45*5}{5*8\sqrt{2} } +14\sqrt{2} =$

$20\sqrt{2}-\cfrac{609}{40\sqrt{2} } =$

$20\sqrt{2}-\cfrac{609*\sqrt{2} }{40\sqrt{2} *\sqrt{2} } =$

$20\sqrt{2}-\cfrac{609\sqrt{2} }{40*2 } =$

$20\sqrt{2}-\cfrac{609\sqrt{2} }{80 } =$

$\sqrt{2} (20-7\cfrac{49}{80} )=$

$\sqrt{2} *12\cfrac{31}{80} =$

$\cfrac{991\sqrt{2} }{80}$

3 0

1 year ago