does anyone know this ​

Answer:

When the discriminant of a quadratic function is negative than it is not be written in factored form.

Step-by-step explanation:

If a quadratic function is [tex]f(x)=ax^2+bx+c[/tex], then

1. It is factorable if [tex]D=b^2-4ac\geq 0,[/tex] i.e., graph of function intersect the x-axis, roots of the function are real.

2. It is not factorable if [tex]D=b^2-4ac< 0,[/tex] i.e., graph of function does not intersect the x-axis, roots of the function are imaginary or complex.

It means, the quadratic function not be written in factored form when the discriminant of a quadratic function is negative.

Answer:

Step-by-step explanation:

Perimeter is the sum of side lengths

Let's find the sides first

Perimeter is

Answer:

$500625

Step-by-step explanation:

$27 per yard. Grass seed costs $2 per square foot. How much does it cost to fence and seed the pasture?  A land for farming has a square-shaped piece of land and an isosceles triangular shaped piece of land that share a base. The square piece of land has a side length of 450 feet. The triangle has legs of 255 feet and height of 120 feet.     area shape square = 450 *450 Square Area = 202500 SQft  perimeter = 450* 4 =1800 Ft  TRIANGLE = Hypotenuse is given by formula H=B√2 but height is already given = 120 and 255 area = Height  * Base = 120 * 255 =Triangle Area = 30600 feet squared     perimeter = 255 * 3 = 765 Ft   fence perimeter is 765-255 = 510 feet   total area = 202500+ 30600= 233100 square foot = 233100* $2 = (*2) = $466200  total fence = 765+510 = 1275 feet = 1275(*$27) = $34425   Total cost =   466200+34425 = $500625

Answer:

-13

Step-by-step explanation:

-3(-2)^2 + 4(-2) + 7

-3(4) - 8 + 7

-12 - 8 + 7

-13

Hey there!

Plug in the value of p and solve:

-3p²+4p+7

-3(-2)²+4(-2)+7

-3(4)-8+7

-12-8+7

-12-1

-13

Hence, the answer is -13.

Hope everything is clear.

Let me know if you have any questions!

#LearningDoesn'tEnd

:-)

Answer:

-125

Step-by-step explanation:

-1 × 5 = -5

-5 × 5 = -25

-25 × 5 = -125

Answer:

An hour and a half  1.5

Step-by-step explanation:

Answer:

A)

Student       Test Score     z-score

A                       126               1.25

B                        98                  -2.772

C                        97                -0.26

D                        88                  -2.984

E                        66                -1.88

F                        95                  -2.801

G                        111                  0.47

H                        105                -2.539

B)For z = 2.00, test score =278.4

For z - -2.00, test score =125.6

Step-by-step explanation:

Student       Test Score     z-score

A                       126               1.25

B                        98

C                        97                -0.26

D                        88

E                        66                -1.88

F                        95

G                        111                  0.47

H                        105

Mean = [tex]\mu = 202[/tex]

Standard deviation = [tex]\sigma = 38.2[/tex]

For Student B

x= 98

[tex]Z=\frac{x-\mu}{\sigma}=\frac{98-202}{38.2}=-2.722[/tex]

For Student D

x= 88

[tex]Z=\frac{x-\mu}{\sigma}=\frac{88-202}{38.2}=-2.984[/tex]

For Student F

x= 95

[tex]Z=\frac{x-\mu}{\sigma}=\frac{95-202}{38.2}=-2.8010[/tex]

For Student H

x= 105

[tex]Z=\frac{x-\mu}{\sigma}=\frac{105-202}{38.2}=-2.539[/tex]

Now we are supposed to find test scores :

For z = 2.00

[tex]Z=\frac{x-\mu}{\sigma}\\2=\frac{x-202}{38.2}\\(2 \times 38.2)+202=x\\278.4=x[/tex]

For z = -2.00

[tex]Z=\frac{x-\mu}{\sigma}\\-2=\frac{x-202}{38.2}\\(-2 \times 38.2)+202=x\\125.6=x[/tex]

Hence ,For z = 2.00, test score =278.4

For z - -2.00, test score =125.6

Step-by-step explanation:

use the formula of the equation of line

Answer:

21/5

Step-by-step explanation:

21/5

Or

21/25

........

Step-by-step explanation:

a) Tangent equals sine divided by cosine.  Therefore:

tan(-t) = sin(-t) / cos(-t)

b) Using the fact that sin(-t) = -sin(t) and cos(-t) = cos(t):

tan(-t) = -sin(t) / cos(t)

tan(-t) = -tan(t)

c) A function is symmetric about the origin if f(-x) = -f(x) (in other words, if it's an odd function).  Therefore, y = tan(t) is symmetric about the origin.

Answer:

1. N,  2. S,  3. S, 4.  S, 5.  N*

Step-by-step explanation:

By "similar," I'm assuming you mean the same thing as "like" terms.  Those are exactly the same (same variables and same exponents) but could have different coefficients (the number in front).

1. N  variables are not the same

2. S  variables are the same, exponents are the same

3. S  same variables; same exponents (x^3 y^2 is the same as y^2 x^3)

4. S

5. N first term has z^2 in it; the second does not

*P.S.  I'm having some trouble distinguishing your "two" from "zee."

If the 2nd expression is

[tex]\frac{1z zyx}{2}[/tex] then the terms are similar.

Answer:

14.8

Step-by-step explanation:

Well, it says that Mike ran 1 second slower. Which means that it took more time for Mike to finish. So, you add 1 second to 13.8 seconds and the answer is 14.8.

Answer:

$120

Step-by-step explanation:

20*6=120

Answer:

$120

Step-by-step explanation:

If lessons cost $20 per week, multiply the cost ($20) by the amount of weeks (6);

20*6= 120

Answer:

-1 1/16 if mixed number. If you want decimal form: -1.0625

Step-by-step explanation:

Your question was this:

9+8/(-4)-12

I want you first to get rid of the -4-12 and be done with it so here are the steps:
Rule: If negative subtract a negative, that shall be an addition problem with the larger number's symbol.

In this case, we need to add 4 and 12 together and include the negative symbol in front of the answer.

That shall be -16

Our Question now:
9+8/-16

So do 9+8 which is 17.

Our question now:

17/-16

Your answer is an improper fraction so you could change it to a mixed number or you could simply divide 17 and -16 to get a negative decimal.

Here are the possible answers:
Mixed Number: -1 1/16

Decimal Form: -1.0625

Answer:

Closet #1.

Step-by-step explanation:

Closet #1 is 4x5x8, right? so, 4x5=20, and 20x8=160 feet. Closet #2 is 6x3x8, and 6x3 is 18. That's already less than 20 even before we multiply by 8. So, the answer to your question is Closet #1.

Answer:

Answer: The first closet is larger.

Step-by-step explanation:

Closet #1

V = l × w × h

V = 4 ft. × 5 ft. × 8 ft.

V = 160 cu. ft.

Closet #2

V = l × w × h

V = 6 ft. × 3 ft. × 8 ft.

V = 144 cu. ft.

Compare the size of the closets

160 cu. ft. > 144 cu. ft.

Answer: The first closet is larger.

Answer:

0.4 %

Step-by-step explanation:

Given:

Percent of pages that do not have pictures = (number of pages without pictures ÷ total number of pages) × 100%

= 1/250 × 100%

= 0.004 × 100%

= 0.4 %

Answer:

0.4%

explanation:

solve:

[tex]\sf \dfrac{1}{250} * 100[/tex]

0.4%

Answer:

40 potatoes.

Step-by-step explanation:

16 ounces make a pound, so you multiply that by 2.5 and you get 40.

Answer: It is exactly 85.7142857143

But if you would like it rounded: 85.7

I would go with the second answer.

\

The solution of the expression is,

⇒ 85.72

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications. For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

Given that;

The expression is,

⇒ 600 divided by 7

Now, We can divide the numbers as;

⇒ 600 divided by 7

⇒ 600 ÷ 7

⇒ 85.72

Learn more about the divide visit:

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Answer:

12 1/5

Step-by-step explanation:

5 can go into itself one time and 5 can go into 25 5 times hope that makes sense

Answer:

12 1/5

Step-by-step explanation:

Answer:

A. $6360, B. He doesn't have enough money.

Step-by-step explanation:

Answer:

This answer is for only part A

1tv=$795

8 x 795 = 6,360

Answer:

5600 $

Step-by-step explanation:

1000 multiply by 5 = 5000 multiply by 12 percent

600 add by 5000

5600

Answer:

4

I hope this helps!

Answer:

1. C 20, 23

2. A 40, 36

3. 00:25, 00:20

4. 0:54, 1:00

5. 0:31, 0:30

Using proportions, it is found that:

A. 165 students can be expected to oppose school uniforms.

B. From the sample, the most likely outcome is in favor, as it got the most responses, hence we should disagree with Bernice.

A proportion is a fraction of a total amount.

Item a:

Out of 80, 11 opposed, hence, out of 1200, we apply the proportion and find that the amount will be of:

1200 x 11/80 = 165.

Hence, 165 students can be expected to oppose school uniforms.

Item b:

From the sample, the most likely outcome is in favor, as it got the most responses, hence we should disagree with Bernice.

More can be learned about proportions at https://brainly.com/question/24372153

i think 10 more miles.

70/7=10

which means he gets 10 more miles for every gallon of fuel

Answer: Area of the rectangular room = length x Breadth

Length= 18 and Breadth = 12

Therefore the Area required to cover the floor = 18 * 12 = 216 ft2

The area of the rectangular room is given by the equation A = 216 feet²

The area of the rectangle is given by the product of the length of the rectangle and the width of the rectangle

Area of Rectangle = Length x Width

Given data ,

Let the area of the rectangle be represented as A

Now , the equation will be

The length of the rectangular room = 18 feet

The width of the rectangular room = 12 feet

Area of Rectangle = Length x Width

Substituting the values in the equation , we get

Area of the rectangular room = 18 feet x 12 feet

On simplifying the equation , we get

Area of the rectangular room A = 216 feet²

Therefore , the value of A is 216 feet²

Hence , the area of the rectangular room is 216 feet²

To learn more about area of rectangle click :

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The middle of the upper half of a set of organized data is called the upper quarter.

We can divide the organized data in two halfs or in 4 quartiles (the interquartile range), where each quartile contains 25% of the data.

Such that each of the two halfs would be divided into two quartiles.

The middle of the upper half (where the third quartile ends and the fourth starts) is called the upper quarter.

So, concluding, the middle of the upper half of a set of organized data is called the upper quarter.

If you want to learn more about organized data, you can read:

https://brainly.com/question/3514929

Answer:

2.983 ft/sec

Step-by-step explanation:

Given that

Distance between center and Jasmine riding on a carousal = 9.5 feet

Time taken to complete one rotation = 20 seconds

To find:

Jasmine's linear speed = ?

Solution:

Number of revolutions per minute = [tex]\frac{60}{20} = 3[/tex]

Formula for linear speed is given as:

[tex]v=\dfrac{2\pi}{60}\cdot r\cdot RPM[/tex]

Where [tex]r[/tex] is the radius of circular path and

[tex]RPM[/tex] is the number of revolutions per minute.

[tex]v=\dfrac{2\pi}{60}\times 9.5 \times 3\\\Rightarrow v=\dfrac{\pi}{10}\times9.5 \\\Rightarrow v = \bold{2.983\ ft/sec}[/tex]

Therefore, the linear speed is 2.983 ft/sec.

Answer: y=7/2 in decimal form 3.500

Step-by-step explanation: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    2-4*y-(-12)=0

Pull out like factors :

  14 - 4y  =   -2 • (2y - 7)

  Solve  :    2y-7 = 0  

Add  7  to both sides of the equation :  

                     2y = 7

Divide both sides of the equation by 2:

                    y = 7/2 = 3.500