Ask question

Ask question

All categories

3 years ago

5

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

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>

You might be interested in

Examine the intersection of these two lines:

Olin [163]

Answer:

b c d e

Step-by-step explanation:

8 0

2 years ago

Write down the first three terms of the sequence whose nth term is given by 2n-5

likoan [24]

Answer:

- 3, - 1, 1

Step-by-step explanation:

To find the first 3 terms substitute n = 1, 2, 3 into the formula

a₁ = 2(1) - 5 = 2 - 5 = - 3

a₂ = 2(2) - 5 = 4 - 5 = - 1

a₃ = 2(3) - 5 = 6 - 5 = 1

The first 3 terms are - 3, - 1, 1

6 0

2 years ago

There are 20 horses in a field one quarter of the horses are brown how many brown horses are there

Misha Larkins [42]

Answer:

20 is total

1/4 of 20 = 5

5 horses are brown

8 0

3 years ago

X X X X X X X Barrette Length (inches) What would be the total length of the 24-inch barrettes if Mikayla places them end-to-end

svlad2 [7]

B or d are most likely it I could be wrong if I am, I am so sorry:)

6 0

3 years ago

Read 2 more answers

190 = 200^b, make b the subject

MArishka [77]

Answer:

b = $\frac{ln190}{ln200}$

Step-by-step explanation:

Using the rule of logarithms

log $x^{n}$ ⇔ nlogx

Given

190 = $200^{b}$ ( take the natural log ln of both sides )

ln190 = ln $200^{b}$ = bln200 ( divide both sides by ln200 )

$\frac{ln190}{ln200}$ = b

3 0

2 years ago