2 years ago

Why does brainley give free answers? How do they benefit from it?

Mathematics

2 answers:

Agata [3.3K]2 years ago

4 0

Answer:

by getting more attention on the app and there numbers get higher

Step-by-step explanation:

kolezko [41]2 years ago

4 0

Answer:

brainly.com/question/25868675?referrer=searchResults#:~:text=attention%20on%20the%20app

Step-by-step explanation:

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Ierofanga [76]

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2 years ago

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Maria works as a part- time waitress and earns $30 per day plus 2% of all sales of food and drinks during the day

ollegr [7]

Answer:

$y = 30 + 0.02x$

Step-by-step explanation:

Required

Write an equation to present her daily earnings?

Let daily sales be represented by x and daily earnings be represented by y.

y is calculated as thus;

$y = Earnings + Commission * Sales$

$y = 30 + 2\% * x$

Convert percentage to decimal

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$y = 30 + 0.02x$

Hence, her daily earnings is $y = 30 + 0.02x$

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3 years ago

What are the exact solutions of x2 - 5x - 1 = 0?.

borishaifa [10]

$x^2-5x-1=0\\\\a=1;\ b=-5;\ c=-1\\\Delta=b^2-4ac\\\\\Delta=(-5)^2-4\cdot1\cdot(-1)=25+4=29 \ \textgreater \ 0\\\\therefore\\x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ \dfrac{-b+\sqrt\Delta}{2a}\\\\x_1=\dfrac{5-\sqrt{29}}{2\cdot1}=\boxed{\dfrac{5-\sqrt{29}}{2}}\\\\x_2=\dfrac{5+\sqrt{29}}{2\cdot1}=\boxed{\dfrac{5+\sqrt{29}}{2}}$