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Nady [450]
11 months ago
11

Use the discriminant to describe the roots of

Mathematics
1 answer:
balu736 [363]11 months ago
3 0

The quadratic equation x² - 5x - 4 = 0 has two real roots as 41 > 0.

<h3>What is a quadratic equation?</h3>

A quadratic equation is an algebraic equation of degree two.

We know in a quadratic equation ax² + bx + c = 0, The discriminant D is        b² - 4ac.

If D > 0 the quadratic equation has two real roots.

If D = 0 the quadratic equation has one real root.

If D < 0 the quadratic equation has no real roots.

∴ In x² - 5x - 4 = 0,

Discriminant D is b² - 4ac.

= (-5)² - 4.1.(-4).

= 25 + 16.

= 41.

∴ D > 0 and the quadratic equation has two real roots.

learn more about discriminant here :

brainly.com/question/15884086

#SPJ1

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Alondiscoperis building two circuior gardens. The smaller garden hos a sodius of 2 meters. The larger garden has an area that is
Vesnalui [34]

Answer:

4\pi * 7 = 28\pi

28\pi - 4\pi = 24\pi = 75.36

75 square meters

Step-by-step explanation:

7 0
2 years ago
PLEASE HELP!<br> When x = 1 — 2 , 3x 2 =
Katyanochek1 [597]

Plug in the x value.

3(1-2)2=?
1-2= -1
3(-1)= -3
-3(2)= -6.

The answer is -6. 



4 0
3 years ago
Ok here is a better pic I need help with it​
BartSMP [9]

Answer:

Step-by-step explanation:

First,You have to realize that if you multiply the amount of food by something, you multiply the amount of calories.  if some piece of food is 100 calories what happens if you eat 2?  you get 2 times that number of calories.  Same fi you eat half of one of that kind of food.  You get half the amount of calories.

Here he makes 1 1/2 (one and a half) times the amount.  Now, if this is confusing  you just need to realize that  multiplying by this is the same as multiplying by 1+1/2.  Say, again, a piece of food is 100 calories.  Multiplying it by this would look like the following.

100(1+1/2)

100*1 + 100*1/2

100+50

150

So if you ever have a mixed number like this  you could split it up into an addition problem and then distribute hat you're multiplying.  Another solution is to multiply by the improper fraction, which here is 3/2, so 100*3/2=150 as well.  Let me know if you don't get how to get the improper fraction or how to multiply fractions.

Now, super simple, just multiply the calories by that number.

310(1+1/2) = 310(3/2)

310 + 155 = 930/2

465 = 465

Kinda showed how to multiply by fractions, still if you don't get it let me know.  

6 0
3 years ago
Solve 8(3x-4)=4x-2. Help
FinnZ [79.3K]
X = 3/2

<em><u>I hope this could help!</u></em>
8 0
3 years ago
Read 2 more answers
(NEED EVIDENCE, NOT ONLY ANSWER)
bearhunter [10]
Area of rectangle = width * length

So,
A = 75 * 18
A= 1350 inch^2

Convert inches to feet
1350 * 0.0833 = 112.5 ft^2
6 0
2 years ago
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