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3 years ago

Do the ratios 16 4 and 4 1 form a proportion?

1 answer:

4 0

Given Ratio
-------------------
16 : 4
16 ÷ 4 : 4 ÷ 4 ← Divide by 4 on both sides
4 : 1

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Answer: Yes, 16: 4 and 4: 1 are proportional.
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Write an equation that represents the line. Use exact numbers

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3 years ago

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Answer:

5 times 3

Step-by-step explanation:

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4 years ago

Evaluate v(x)=12-2x-5 when x=-2,0, and 5 . v(-2)= v(0)= v(5)=

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Step-by-step explanation:

v(-2)= 12-2x(-2)-5

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2 years ago

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To make a positive profit p(x)>0 we need to make:
$-100 x^{2} +350x-150 \ \textgreater \ 0$

Now we solve this for x:
$-2 x^{2} +7x-3 \ \textgreater \ 0$

We have:
a = -2
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c = -3

We will use formula for quadratic equation:
$x_{1} = \frac{-b+ \sqrt{ b^{2}-4ac } }{2a} \\ \\ x_{2} = \frac{-b- \sqrt{ b^{2}-4ac } }{2a} \\ \\ x_{1} = \frac{-7+ \sqrt{ 49-24 } }{-4} = \frac{-7+5 }{-4} = \frac{-2 }{-4} = \frac{1}{2} \\ \\ x_{2} = \frac{-7- \sqrt{ 49-24 } }{-4} = \frac{-7-5 }{-4} = \frac{-12 }{-4} = 3$

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3 years ago

Read 2 more answers

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Answer:

Step-by-step explanation:

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3 years ago