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love history [14]
3 years ago
14

What is the discrimination of the equation 0=x2+4x-2

Mathematics
1 answer:
Stolb23 [73]3 years ago
4 0
\bf \qquad \qquad \qquad \textit{discriminant of a quadratic}
\\\\\\
0=\stackrel{\stackrel{a}{\downarrow }}{1}x^2\stackrel{\stackrel{b}{\downarrow }}{+4}x\stackrel{\stackrel{c}{\downarrow }}{-2}
~~~~~~~~
\stackrel{discriminant}{b^2-4ac}\implies 4^2-4(1)(-2)\implies 24
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Find the perimeter of the following shape, round to the nearest tenth
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Answer: you take the slope of the lines rise over run and add together

Step-by-step explanation:

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prisoha [69]

Answer:

Part A: x0.50 + 3 = 18.50

Part B: x0.75 + 3 - x0.10 = 21

Part C: The equations from Part A and Part B differ because of the cost of plastic cup.

Step-by-step explanation:

Let x represent the number of cup of lemonade sold. Therefore, we have:

Part A:

This situation can be represented by the following equation:

x0.50 + 3 = 18.50

Part B:

This situation can be represented by the following equation:

x0.75 + 3 - x0.10 = 21

Part C:

The equations from Part A and Part B differ because of the cost of plastic cup.

For equation from Part A, revenue is the same as profit as Sydney does incur any cost to buy plastic cup before selling her lemonade.

For equation from Part B, revenue is different from profit because Daria has to incur the cost of plastic cup which $0.10 per cup of lemonade before selling her lemonade.

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What is the 399,713 rounded to the place value of the third underlined digit of 399
maksim [4K]

The <em>correct answer</em> is:

400,000.

Explanation:

The third digit in 399 is 9. To round to this place value, we inspect the digit behind it. If the digit is 5 or greater, we round up; if it is less than 5, we round down.

The digit behind 9 is 7. Since it is greater than 5, we round up. This would ordinarily put the number up 1; however, doing that makes the 9 a 10, which in turn makes the next number 10, and the next number 4. This gives us 400,000.

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I think the answers your look for are

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Step-by-step explanation:


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omeli [17]

Given:

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To determine the value of "x", we can isolate it in the equation (x + 3 = 18). This can be done by subtracting 3 to both sides of the equation.

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To verify that the value of "x" is 15, we need to substitute the value of x into the inequality (x > 10).

⇒ x < 10

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Therefore, the value of "x" is 15.

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