How do you find the discrimminant in algebra?

Answers

Answer 1

Step-by-step explanation:

the discriminant is the part of the quadratic formula underneath the square root symbol : b2 -4ac . the discriminant tells as whether there are two solutions ,one solution , or no solution....


Related Questions

Determine whether the given lines are parallel, perpendicular or neither.

2x + 3y = 1
3x – 2y = 1

Answers

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

These two equations are perpendicular it's pretty tough to figure it out with the only the equations like last time but if you graph it's more easier because it's visual.

So the equations solved for y is...

[tex]y=-\frac{2}{3} x+\frac{1}{3}[/tex]

[tex]y=\frac{3}{2}x-\frac{1}{2}[/tex]

Given the values in the table on the left come from
a continuous function, which intervals must
contain an x-intercept? Select two options.
-0.8 -3.2 < x < -2.4
2.4 < x < 3.2
1.6 < x < 2.4
DONE

Answers

Answer:

B and d

Step-by-step explanation:

Edge 2020

Answer:

-3.2 and 1.6

Step-by-step explanation:

My teacher gave me a number and told me to subtract 5 from the number and then multiply the result by 8. Unfortunately, I wasn't listening. I thought she told me to subtract 8 first and then multiply the result by 5. I did those computations correctly and came up with 70 as my answer. What is the correct answer to the question my teacher actually asked me?

Answers

Answer:

136

Step-by-step explanation:

If you subtracted 8 and multiplied it later 70 divided by 5 is 14 plus 8 equals 22 so 22 was the number I suppose

22 minus 5 equals 17, 17 times 8 equals 136 so the original answer was 136

Can someone pls help me solve this? I just don’t get it, please help please

Answers

Answer:

conveyor 1 10/2=5/1

conveyor 2 -8/2=-4/1

conveyor 1 is steeper

Step-by-step explanation:

conveyor 1 goes up 5 ft for every foot it runs where

conveyor 2 goes down 4 ft for every foot it runs

The amount of available disk space on a digital video recorder changed from 81% to 9% after recording 12 episodes of a show. Each episode requires the same amount of disk space. Which statement is true? The change in available disk space is 6% per episode. The change in available disk space is −6% per episode. The change in available disk space is 7.5% per episode. The change in available disk space is −7.5% per episode.

Answers

Answer:

The change in available disk space is −6% per episode

Step-by-step explanation:

Given that :

Available disk space changed from 81% to 9% after recording 12 episodes of a show

Each episode requires the same amount of disk space

Change in disk space =

Final % = 9%

Initial percentage = 81%

Change = final value - initial value :

(9 - 81)% = -72%

72% reduction in disk space

Space taken up per episode :

Reduction in space / number of episodes

= -72% / 12

=- 6%

Explain in detail what happens to the particles before, during, and after sublimation.

Answers

Answer:

The process in which a solid changes directly to a gas is called sublimation. It occurs when the particles of a solid absorb enough energy to completely overcome the force of attraction between them. Solid carbon dioxide changes directly to the gaseous state. ...

Step-by-step explanation:

The graph below shows the amount of Michael’s paycheck based on a 40 hour work week, plus his commission from sales. Michael earns 50% of the total amount of sales that he makes.

Answers

Answer:

Option B.

Step-by-step explanation:

The graph attached shows the amount of Michael's paycheck based on 40 hour wok along with commission from the sales.

There are two variables plotted on the graph.

On x-axis → Amount of sales

On y-axis → Amount of paycheck he received

Point (0, 100) shows the y-intercept.

Since, y-coordinates show the amount of paycheck, y-intercept will show the amount ($100) at zero sales.

Therefore, Option B will be the correct option.

Answer:

sorry I am late, but here is the answer! Really helpful for k12 students! Hope this helps!

PLEASEE HELP I ONLY HAVE 3 MINUTES LEFT HELPP

What is the equation in the slope-intercept form of a line that is perpendicular to y=2x+2 and passes through the point (4,3)?

A) y=-1/2x+5
B) y=2x+3
C y=-2x+2
D) y=2x+5

Answers

Answer: A) y= -1/2x+5

Step-by-step explanation: If the line is perpendicular to the original, the  new "m" (coefficient  of x) has to be the negative reciprocal of the original "m"

A is the answer time is probably up tho

Given the figure below find the values of x and z.

Answers

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

So first I would do...[tex]9x+39+12x-48=180[/tex] first because it'll give me the x value, so....

[tex]9x+39+12x-48=180\\21x-9=180\\21x=189\\x=9[/tex]

So now we know that the x equals 9 so we plug it in for (9x+39) because it's vertical to the other angle across from it and vertical angles are always congruent, so...

[tex]z=9(9)+39\\z=81+39\\z=120[/tex]

so now we know that x=9 and z=120.

Nyali paid $62 for a bicycle. She sold it later for $46.

What was her percentage loss?

Answers

Answer:

25.8 %

Step-by-step explanation:

FIrst you need to find how much 1% of sixty two is worth (1.612) then find the difference between values ($16) then multiply these values together to find your answer

2y + x + 7 = 0
how do i solve with substitution?

Answers

Answer:

x+2y=-7

Step-by-step explanation:

2y + x =-7

x+2y=-7

When solving for x, set y to 0. When solving for y, set x to zero. You can just isolate the variables from there.

Study the number line shown. Match the question with the correct letter on the number line.

Answers

Answer:

C,B,D,A

Step-by-step explanation:

Start at 3(X)  and move based on the question

What's is the distance between (-2,7) and (-4,11)

Answers

Answer:

Step-by-step explanation:

The answer is in the picture above. Sorry for the previous mistake

help me in the question please ​

Answers

Yes he would
1 DVD= $12.50
1 CD= $10.

12.5+ 10= $42.50

Find the value of b for the triangle using the Pythagorean Theorem.

Answers

Step-by-step explanation:

Hey there!

Given;

The given figure is a Right angled triangle, taking reference angle as angle B.

Hypotenuse= AB=5

Base= CB= 4

Perpendicular= AC=b

Using Pythagorean theorem.

[tex] {h}^{2} = {p}^{2} + {b}^{2} [/tex]

[tex]p = \sqrt{ {h}^{2} - {b}^{2} } [/tex]

Put all values.

[tex]b = \sqrt{ {5}^{2} - {4}^{2} } [/tex]

[tex]b = \sqrt{25 - 16} [/tex]

[tex]b = \sqrt{9} [/tex]

Therefore, the value of b is 3.

Hope it helps...

Help! marking branliest answer if gotten right!

Answers

Answer: x= 65

Step-by-step explanation:

Vertical angles are equal to each other. So, to solve, write the equation:

2x - 10 = 120

Add 10 to both sides

2x = 130

Divide both sides by 2

x = 65

What is the square of 15?

Answers

15 squared=
15 x 15 = 225

-254 minus -254 equals ?

Answers

Answer:

0

Step-by-step explanation:

They both cancel eachother out.

What is the length of 15,409,000 cubic yard in miles? (to
the nearest hundred)

Answers

Answer:

Step-by-step explanation:

The cube root of 15,409,000 = 248.84 yards.

There are 1760 yards in a mile

One edge of a cube = 248.84 / 1760 = .141386 miles.

So a cube would be .00283cubic miles. Your answer does not reach a hundredth place, I don't think.

A=pir^2 solve for pi

Answers

Given problem;

   A = [tex]\pi[/tex]

   Solve for π;

To solve for π implies that we make it the subject of the expression.

So;

       A = π r²

      Now multiply both sides by [tex]\frac{1}{r^{2} }[/tex]

 So;

                A x [tex]\frac{1}{r^{2} }[/tex]   = [tex]\pi[/tex] x r² x [tex]\frac{1}{r^{2} }[/tex]

              r² cancels out from the right side and leaves only π;

                  π = [tex]\frac{A}{r^{2} }[/tex]

So    [tex]\pi = \frac{A}{r^{2} }[/tex]

A line passes through the point (-5,-2) and (0,2) write the equation in point-slope form

Answers

Answer:

y=4/5x+2

Step-by-step explanation:

Answer:

y=0.8x+2

Step-by-step explanation:

First, you would figure out the slope using the following equation: (y2-y1)/(x2-x1)=slope.

So, (2--2)/(0--5)= 4/5, or 0.8. This would be the slope.

Then, you would figure out b by putting a data point from the given ones. I chose (0, 2).

2=0.8(0) + b --> 2=0 + b --> 2=b

So, the final equation is y=0.8x+2

Determine the slope from the following order pairs:
(0,3) (3,-1)

Answers

use slope formula
y^2-y^1/x^2-x^1

the answer is -4/3

please help for a cookie ​

Answers

Answer:

B

Step-by-step explanation:

I need help with #15 please!

Answers

Answer:

A) m = 16/5

Step-by-step explanation:

We need to find the slope between a choice of two points in this function table. I'll choose points (5,16) and (10,32) however you can choose any point you want.

To find "m" which is the slope, we need to do the following:

m = (y2-y1)/(x2-x1)

m = (32-16)/(10-5)

m = 16/5

The answer is A) m = 16/5

can someone help me plzzzz

Answers

its incresing and its 2

What is the decimal multiplier to decrease by 11%

Answers

Answer:

1/1

Step-by-step explanation:

i hate math do you hate math?

Answer:
0.89
Explanation:
Since we want to to decrease by 11 percent, we multiply by 100-11=89% to get the result. To convert a percentage to a decimal multiplier, just divide over 100.
Therefore, we get the answer 0.89.

At an amusement park, Robin bought a t-shirt for $13 and 8 tickets for rides. She spent a
total of $32 Write an equation and determine how much each ticket cost.

Answers

Answer:

$2.37

Step-by-step explanation:

if you 13 from 32 and then divide that by 8 you get 2 dollars and 37 cents

Answer:

2.37

Step-by-step explanation:

32-13=19

19/8=2.37

Refer to the figure at the right. If
m22 = (a + 15)° and m23 = (a + 35)°, find the
value of a such that HĽ I HJ.

Answers

Answer:m∠1 = 145°

m∠2 = 35°

m∠3 = 35°

m∠4 = 145°

m∠5 = 145°

m∠6 = 35°

m∠7 = 35°

m∠8 = 145°

Step-by-step explanation:

The required value of a is 20°.

What are complementary angles?

In geometry, complementary angles are defined as two angles whose sum is 90 degrees. In other words, two angles that add up to 90 degrees are known as complementary angles.

Now it is given that,

m22 = (a + 15)° and m23 = (a + 35)°

Let m22 and m33 be the angle between HL and HJ.

And since HL is perpendicular to HJ therefore they are complement ot each other.

Thus,

m22 + m23 = 90°

⇒ (a + 15)° +  (a + 35)° = 90°

⇒ a° + 15° +  a° + 35° = 90°

⇒ 2a° +50° = 90°

⇒ 2a° = 90° - 50°

⇒ 2a° = 40°

⇒ a° = 40°/2

⇒ a° = 20°

Thus, the required value of a is 20°.

To learn more about complementary and supplementary angles:

brainly.com/question/17040049

#SPJ2

Can someone please help me solve this question? 7-3r=r-4(2+r)

Answers

Answer:

There is no solution

Step-by-step explanation:

7−3r=r−4(2+r)

Step 1: Simplify both sides of the equation.

7−3r=r−4(2+r)

7+−3r=r+(−4)(2)+(−4)(r)(Distribute)

7+−3r=r+−8+−4r

−3r+7=(r+−4r)+(−8)(Combine Like Terms)

−3r+7=−3r+−8

−3r+7=−3r−8

Step 2: Add 3r to both sides.

−3r+7+3r=−3r−8+3r

7=−8

Step 3: Subtract 7 from both sides.

7−7=−8−7

0=−15

Answer:

There are no solutions.

On Monday, Jayla raised $ 30 and Carlos raised $ 50. After that, Jayla raised $ 12 per day and Carlos raised $ 7 per day. After how many days will they have raised the same amount? They will raise the same amount after days. (Only type in the number for your final answer)

Answers

Answer:

4 days

Step-by-step explanation:

For Jayla:

[tex]Base\ Amount = \$30[/tex]

[tex]Additional = \$12[/tex] daily

For Carlos:

[tex]Base\ Amount = \$50[/tex]

[tex]Additional = \$7[/tex] daily

Represent the number of days with d

Jayla's expression can be represented using:

[tex]30 + 12*d[/tex]

Carlos' can be represented as:

[tex]50 + 7 * d[/tex]

Equate both expressions:

[tex]50 + 7 * d = 30 + 12 * d[/tex]

[tex]50 + 7d = 30 + 12d[/tex]

Collect Like Terms

[tex]12d - 7d = 50 - 30[/tex]

[tex]5d = 20[/tex]

Solve for d

[tex]d = 20/5[/tex]

[tex]d = 4[/tex]

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