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nydimaria [60]
3 years ago
5

What is the discriminant of 3x^2-8x+5=5x^2

Mathematics
1 answer:
creativ13 [48]3 years ago
6 0
Move all terms to the left side of the equation and simplify.

<span><span><span><span><span><span>−2</span><span>x2</span></span><span><span>−8</span>x</span></span>+5</span>=0</span><span><span><span><span><span>-2</span><span>x2</span></span><span><span>-8</span>x</span></span>+5</span>=0

</span></span>The discriminant of a quadratic is the expression inside the radical of the quadratic formula.

<span><span><span>b2</span><span><span>−4</span><span>(<span>ac</span>)</span></span></span><span><span>b2</span><span><span>-4</span><span>ac

</span></span></span></span>Substitute in the values of <span>aa</span>, <span>bb</span>, and <span>cc</span>.

<span><span><span><span>(<span>−8</span>)</span>2</span><span><span>−4</span><span>(<span><span>−2</span>⋅5</span>)</span></span></span><span><span><span>-8</span>2</span><span><span>-4</span><span><span>-2</span>⋅5

</span></span></span></span>Evaluate the result to find the discriminant.\

<span>104</span>
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What is 2/5 divided by 8/15
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3/4 is the correct answer. 
<span>
This is a division problem, so we need to flip the second fraction. Then we need to multiply the numerator and denominator of the fractions to get the quotient.

</span>When we divide fractions, we have to switch the numerator and denominator of the second fraction. Now our second fraction is 15/8<span>.
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<span>Multiply the numerators together, and multiply the denominators together.
</span>

The fraction 30/40 is not in lowest terms, so we need to reduce it. List the factors of the numerator and denominator:

Factors of <span>30: 1, 2, 3, 5, 6, 10, 15, 30</span>

Factors of <span>40: 1, 2, 4, 5, 8, 10, 20, 40</span>

10 is the largest factor of both 30 and 40, so we need to divide both the numerator and denominator by 10.

Numerator: 30 ÷ 10 = 3

Denominator: 40 ÷ 10 = 4

Write the new fraction:

<span>3/4</span>

<span>


Happy studying ^-^</span>
6 0
4 years ago
Read 2 more answers
5, 15, 45, 135, 405,
Goshia [24]

This is a geometric sequence since there is a common ratio between each term. In this case, multiplying the previous term in the sequence by  

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3 years ago
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