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nignag [31]
2 years ago
9

You pay $20 for 4 cups of coffee. What is theunit rate?

Mathematics
1 answer:
abruzzese [7]2 years ago
6 0

Answer:

$5.00

Step-by-step explanation:

you would be paying $5.00 per cup

20 divided 4 is 5

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Solve 5x^2 − 3x + 17 = 9.
Vedmedyk [2.9K]

Answer:

The roots of the equation are x = \frac{3+\sqrt{151}i}{10} and x = \frac{3-\sqrt{151}i}{10}

and there are no real roots of the equation given above

Step-by-step explanation:

To solve:

5x² − 3x + 17 = 9

or

⇒ 5x² − 3x + 17 - 9 = 0

or

⇒ 5x² − 3x + 8 = 0

Now,

the roots of the equation in the form ax² + bx + c = 0 is given as:

x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}

in the above given equation

a = 5

b = -3

c = 8

therefore,

x = \frac{-(-3)\pm\sqrt{(-3)^2-4\times5\times8}}{2\times5}

or

x = \frac{3\pm\sqrt{9-160}}{10}

or

x = \frac{3+\sqrt{-151}}{10} and x = \frac{3-\sqrt{-151}}{10}

or

x = \frac{3+\sqrt{151}i}{10} and x = \frac{3-\sqrt{151}i}{10}

here i = √(-1)

Hence,

The roots of the equation are x = \frac{3+\sqrt{151}i}{10} and x = \frac{3-\sqrt{151}i}{10}

and there are no real roots of the equation given above

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2 years ago
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first one: 1 1/2 pints

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3 0
3 years ago
I don’t know the equation :(
Serhud [2]

Answer:

me too

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Can someone please help me i'll mark brainliest and give a 5 star rating :)))​
Alexxx [7]

Answer:

see below

Step-by-step explanation:

That is a LOT of questions

complement angles add to 90    suppleent angles add to 180

9)  complement = 50   supplelement = 140

13)  compl = 40     suppl = 130  

14) comp = 45        supple = 135

I think you can do the rest, right?

4 0
1 year ago
Tell whether 24 is a factor or multiple of the 6.
gregori [183]

Answer:

yes

Step-by-step explanation:

it is a factor because you can keep * every time

8 0
3 years ago
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