3 years ago

Anyone understand how to do both of these?

Mathematics

1 answer:

Evgen [1.6K]3 years ago

6 0

for the first one set 3y+y=180 and y+x=180

the second one set w+y=180, 42+x=180, y+20=180, and 87+v

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3 years ago

In an experiment of 50 cars passing was recorded 17 silver cars were recorded what Is the relative frequency of a silver car pas

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3 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:

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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

2 years ago

H (t) = -16t^2 + 144

Delicious77 [7]

Answer:

-16 (t+3) (t-3)

Step-by-step explanation:

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3 years ago

Factorise fully<br>14x – 8

andriy [413]

Answer:

2(7x-4)

Step-by-step explanation:

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3 years ago

Read 2 more answers