Compute the value of the discriminant and give the number of real solutions of the quadratic equation. 2 -25x + 20x -4=0​

Answers

Answer 1
your answer is x = -2/5

Related Questions

is this correct??????

Answers

Answer:

no, I think it's A.

Step-by-step explanation:


8 + (8 + 2) + (6 * 2) =

Answers

Answer:

Easy

Step-by-step explanation:

So you have 8, then you add the 2 numbers in the parenthesis 8+2 is 10 then you add 6+2 is 8 the you get 18 from 10 plus 8 and then add 8 which is 18+8=26

HOPE THIS HELPED!!!!  Have a great day.

If f(x) = x2 – 2x, find:

f(6)=

Answers

Answer:

0

Step-by-step explanation:

When x=6

f(6) =(6)2-2(6)=12-12=0

Answer:

firstly... substitute x for 6 in the equation..

=(6)2 -2(6)

=12-12=0

Which expressions are equivalent to -4(3d-2)-7

Answers

Answer:

C, none of the above

Step-by-step explanation:

-4(3d-2) after expression should be -12d+8 and then add -7, so combine like terms would be -12d+1, which is not the choice, so the answer is none of the above.

Answer:

The answer is C  (none of the above)!

Step-by-step explanation:

Please help ggdskdsrjcxseyhcdijb​

Answers

Answer:

Help

Step-by-step explanation:

I how can I help you?

You brought 1.5 dozen bagels to school. A dozen bagels cost $5.98. You used a coupon that took $1.00 off of the total. How much did you pay for the bagels?
$9.97
$4.98
$7.97
$8.97

Answers

Answer:   (7.97)

Step-by-step explanation:

1 dozen = 5.98

.5 dozen = 2.99

5.98+2.99=8.79 8.79- the 1.00 is (7.97)

hope this helps!


Nine people are evenly sharing 13 burgers.
How many burgers should each person get?

Answers

Answer:13

Step-by-step explanation:

13 burger each person should get 13

Answer  9  remainder  4

Step-by-step explanation:

hope this is right ;0

Which expressions are equivalent?

Answers

Answer:

choice 1) 1/5k - 2/3j and -2/3j + 1/5k

Step-by-step explanation:

Answer:

The first one

Step-by-step explanation:

Make a circle graph for each set of data.

Top 5 Countries With the Most Post Offices as of 2001
India
144,396
Russia
93,076
China
50,969
United States
39,270
Turkey
28,086
Source: Scholastic Kid’s Almanac

a.
A circle graph. India is about 40 percent; Russia, 30 percent; China, 15 percent; U S, 10 percent; Turkey, 8 percent.
c.
A circle graph. India is about 40 percent; Russia, 15 percent; China, 30 percent; U S, 5 percent; Turkey, 8 percent.
b.
A circle graph. India is about 50 percent; Russia, 15 percent; China, 15 percent; U S, 10 percent; Turkey, 5 percent.
d.
A circle graph. India is about 35 percent; Russia, 30 percent; China, 15 percent; U S, 10 percent; Turkey, 8 percent.



Please select the best answer from the choices provided


A
B
C
D

Answers

Answer:

A

Step-by-step explanation:

edge 2021

The correct option is A circle graph. India is about 40 percent; Russia, 30 percent; China, 15 percent; U S, 10 percent; Turkey, 8 percent.

We have given that,

Make a circle graph for each set of data.

Top 5 Countries With the Most Post Offices as of 2001

India                          144,396

Russia                       93,076

China                        50,969

United States             39,270

Turkey                        28,086

Source: Scholastic Kid’s Almanac

What is the circle graph?

A circle graph is the intersection graph of a set of chords of a circle. It is an undirected graph whose vertices can be associated.

The correct option is A circle graph. India is about 40 percent; Russia, 30 percent; China, 15 percent; U S, 10 percent; Turkey, 8 percent.

To learn more about the circle graph visit:

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Pastisch deposited 50000 at rate 4%
in saving account after 5 years he
withdrew Rs 10000 and total interest
of 5 year How long should he keep
the remaining amount to get total
interest of rs14800 fom the begining

Answers

Answer:

Intrest =P*R*T/100

[tex]50000 \times 4 \times 5 \div 100 \\ = 50 \times 5 \times 4 \\ = 250 \times 4 \\ = 1000[/tex]

AMOUNT AFTER 1 YEAR,

=50000 +1000

=51000

HE WITHDREW 10000

SO

51000-10000

41000

[tex]14800 \div 41000 \\ = 0.360[/tex]

what music shuld i listin to

Answers

Answer:

conan gray

Step-by-step explanation:

Answer:

Daisy- Ashnniko & Mr. Perfectly Fine- Taylor Swift

Step-by-step explanation:

The arc length of a sector created by a 90° angle is 25 cm. What is the circumference of the entire circle? Express
the answer in terms of Pi

Answers

Answer:

We know length of one quarter of a circle = 2πr/4 = πr/2

So here we can make the equation for to find thr value of radius r

length of one quarter given = 25 cm

so πr/2 = 25 cm

=> πr = 50 cm

=> r = 50/π cm

So the entire circumference of circle =

2πr

= 2 π 50/π cm

= 100π/π cm (ans)

Here we dont substitute the value of π due to represent the answer in terms of pi.

Hope it helps you

Using the matrix at the right that reprexents rectangle ABCD, list the coordinates of C:

Answers

Answer:

8, -5

Step-by-step explanation:

Find the value of x and the measure of the missing angle

Answers

Answer:

the missing angle=85

x=95

Step-by-step explanation:

180-95=85

If the human heart beats an average of 62 beats in a minute, how many times will it beat in 291 minutes? A 17,942 B 18,042 229 353.

JUST SAY WHAT LETTER IT IS!!!!​

Answers

Answer:

Step-by-step explanation: the answer is A 17,942

- Scores on an exam are normally distributed woth a population standard deviation of 5.6. A random sample of 40 scores on the exam has a mean of 32 estimate the population mean with - A) 80% confidence - B) 90% - C) 98%

Answers

Answer: i think i got b or c onr of them are correct  :)

Step-by-step explanation:

The estimated population mean with

80% confidence =  [30.856, 33.135]

90% confidence = [30.543, 33.456]

98% confidence =  [29.94, 34.06]

What is confidence interval?

For a population with unknown mean  and known standard deviation , a confidence interval for the population mean, based on a simple random sample of size n, is [tex]\bar x +_{-}z^{*}\frac{\sigma}{\sqrt{n} }[/tex] , where z* is the upper (1-C)/2 critical value for the standard normal distribution.

Population standard deviation = 5.6

Sample mean = 32

Sample size = 40

Given confidence level = 80%

[tex]z^{*}[/tex] at 80% confidence level = 1.28

Upper confidence interval = 33.135

Lower confidence interval = 30.865

Population mean lies between [30.856, 33.135] at 80% confidence level.

Given confidence level = 90%

[tex]z^{*}[/tex] at 90% confidence level = 1.65

Upper confidence interval =33.456

Lower confidence interval = 30.543

Population mean lies between [30.543, 33.456] at 90% confidence level.

Given confidence level = 98%

[tex]z^{*}[/tex] at 98% confidence level = 1.65

Upper confidence interval = 34.06

Lower confidence interval = 29.94

Population mean lies between [29.94, 34.06] at 98% confidence level.

Learn more about confidence interval here

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On a road trip, london and his friends see 10 cities over 5 days. How many cities Landon and his friends will see in 8 days? Solve using unit rates. HELP ME

Answers

Answer:

16 cities

Step-by-step explanation:

if 5days = 10 cities

8days=?

applying cross multiplication :

(8days × ten cities )÷5 day

= 16 cities

Select the correct answer.
Does this matrix have an inverse? Why or why not?
A = [16 - 2)
0
A.
Yes, because its determinant is zero.
a
B.
Yes, because its determinant is greater than zero.
o
C.
No, because its determinant is zero.
o
D.
No, because its determinant is less than zero.

Answers

Answer:

c

Step-by-step explanation:

The given matrix has a determinant of zero thus it will not have any inverse.

What is a matrix?

matrix, a collection of numbers lined up in rows and columns to produce a rectangular array. The elements of the matrix, also known as the entry, are the numerals.

In another word, a matrix is a set of variables that are arranged in such a good way that we can create an algebraic equation from that.

In computer graphics, where they have been used to describe picture transformations and other alterations, matrices have vital applications as well in many sectors.

Given the matrix

[tex]\begin{bmatrix}16 & -4 \\8 & -2 \end{bmatrix}[/tex]

The determinant of this matrix is 16(-2) - (8)(-4)

⇒-32 + 32 = 0

Since the determinant of the given matrix is zero so there will be no inverse.

Hence "The given matrix has a determinant of zero thus it will not have any inverse".

For more about matrices

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PLEASE HELP !! ILL GIVE BRAINLIEST !! 100 POINTS

Answers

Answer:

Volume of a cylinder (V) : π x radius ² x height

V = 3.14 x 12² x 13

V = 5878.08 cubic millimeters.

Step-by-step explanation:

You put a $275 plate set on layaway and put down a 25% deposit. What is the balance?

Answers

You would have to put down a deposit of $69.75

Can someone please help me with this ?

Answers

i believe the area is 704

the area of the square is 484
the area of the triangle is 220
484+220=704

7x + 10y = 36

Y= 2x + 9

Answers

Answer:

(-2,5)

Step-by-step explanation:

PLEASE HELP!!! ILL GIVE BRAINLIEST !! Which is the correct answer ?

Answers

Answer:

For sure C (Vertical Angles)

Step-by-step explanation:

They are vertical because they are across from each other.

Help me please but PLEASE NO LINKSSSSS

Answers

Answer:

C

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

A=LxW

15x8=120

if you answer all of these you will get a fat brainless. :) pls help​

Answers

Answer:

1st box- the 3rd option(3215)

2nd box- 3rd option(the one with 5 sides)

3rd box- add 4 and 10

5th box-

700x35= 24,500

900x42= 37,800

6th box-

-[tex]\frac{5}{6}[/tex]

-[tex]\frac{7}{10}[/tex]

7th box-

-divide

-add

-multiply

-subtract

8th box-

6.03$, 6 dollars and 3 cents

9th box- 18 f's

10th box-

1/12, 1/8,1/4,1/3,1/2

Step-by-step explanation:

all i can do rn, sorry.

Helppppp plsssssssssssssssssssssss thanks シ

Answers

Answer:

Step-by-step explanation:

False

True

False

Select the graph for the solution of the open sentence. Click until the correct graph appears. 2|x| + 1 < 5

Answers

Answer:

1st Answer

Step-by-step explanation:

There are 12 cans of soup in a carton. Each can has a
diameter of 8 cm and a height of 9 cm. How much paper, to
the nearest square centimeter, is needed to make labels that
wrap around each of the 12 cans? (Assume there is no
overlap.)

Answers

Answer:

The required amount of paper is 2715.23 [tex]cm^{2}[/tex].

Step-by-step explanation:

The cans of soup has a shape of a cylinder, so that;

The surface area around a cylinder = 2[tex]\pi[/tex]rh

Where: r is the radius of the can, and h is its height.

From the given question, diameter = 8 cm, then;

radius = [tex]\frac{diameter}{2}[/tex]

          = [tex]\frac{8}{2}[/tex]

r  = 4 cm

Surface area around one of the cans = 2 x [tex]\frac{22}{7}[/tex] x 4 x 9

                                                = 226.2857

Surface area around one of the cans = 226.28 [tex]cm^{2}[/tex]

So that, the total amount of paper required to make labels around each of the 12 cans can be determined by:

12 x 226.2857 = 2715.4284

The required amount of paper is 2715.23 [tex]cm^{2}[/tex].

what is the surface area of this rectangular prism with areas of a width of 8 m , 9 m, 6 m ?

Answers

Answer:

340 m²

Step-by-step explanation:

Just multiply each edge of the rectangular prism until you find the surface area of each side then add them together

Can someone help me with this question plz.

Answers

Square, rectangle, quadtratle
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