9y = 13y2 - 4
The discriminant of the quadratic is ?

Answers

Answer 1

Answer:

289

Step-by-step explanation:

1. if to re-write the given equation, then 13y²-9y-4=0;

2. if to calculate the required discriminant, then:

D=81+13*4*4=208+81=289.

Answer 2

Answer:

289

Step-by-step explanation:

[tex]13y^2-9y-4 = 0\\[/tex]

D = [tex]b^2-4ac[/tex]

Wherein,

b = 9

a = 13

c = -4

[tex]D = 9^2-(4*13*-4)\\= 289[/tex]


Related Questions

Simplify the complex fraction. 2/3m-1/2m 3m/3+4/5m​

Answers

Answer:

131m/210 I THINKKKKK

Step-by-step explanation:

RNDJDJDJSJD

simply the following expression:
a⁴ = a⁵​

Answers

Answer:

a9

Step-by-step explanation:

In the balcony of an auditorium, there are 20 seats in the first row, 22 seats in the second row and 24 seats in the third row. Assuming this pattern continues, write the explicit form of a sequence describing the number of seats in each row.​

Answers

Answer:

is two more than the row before

Step-by-step explanation:

i hope i help\

2. It takes the 1st hose 3.25 hours to fill the empty tank
by itself while both hoses can fill it in 1.25 hours. How
long will it take the 2nd hose to fill the empty tank by
itself?

Answers

Answer::

Step-by-step explanation:

Where should you place parentheses in the expression 2 + 6 ÷ 2 + 4 × 3 so that the value of the expression is 16? Multiple choice question

Answers

Answer: (2+6)÷ 2 + 4 × 3

Answer:

4x3

Step-by-step explanation:

K.8 Complete a table and graph a proportional relationship 7th grade math
but it has to be in a zooom bc its alot of questions

Answers

Answer:

Someone gave me da link to dis

Step-by-step explanation:

Joe earned $25500 per annum and received a 6.35% raise. How much does he earn now?

Answers

Answer:

1619.25

Step-by-step explanation:

25500 x 6.35 % = 1619.25

José bought for notebooks more than twice of a number he has now 12 notebooks what is the number

Answers

Answer:

is it 24

Step-by-step explanation:

twice of a number thats 12???

dont use answer unless your sure

Work out the following.
33 + 8 x 9 =
(31 - 20) x 3 =
102 - 6 = (8-5) =
120 = (12 + 4 x 7) - 2 =​

Answers

1st Equation:

8 × 9 = 72

33 + 72 = 105

The answer is 105

2nd Equation:

31 - 20 = 11

11 × 3 = 33

The answer is 33

3rd Equation:

102 - 6 = 8 - 5

102 - 6 = 96

96 = 8 - 5

8 - 5 = 3

96 = 3

93 = 3 is false so therefor, this equation has no solution.

4th Equation:

102 = 12 + 4 × 7 - 2

4 × 7 = 28

102 = 12 + 28 - 2

12 + 28 = 40

102 = 40 - 2

40 - 2 = 38

102 = 38

102 = 38 is false so, it means that this equation has no solution.

The area of a rectangle is 125 ft. The ratio of the width to the length is 1:5. Find the length and width.

Answers

Answer:

Length of the rectangle = 25 ft

Width of the rectangle = 5 ft

Step-by-step explanation:

Ratio of the width to the length is 1:5

So, let

Width = x

and length = 5x

Area of the rectangle = 125

[tex]x \times 5x = 125 \\ \\ 5 {x}^{2} = 125 \\ \\ {x}^{2} = \frac{125}{5} \\ \\ {x}^{2} = 25 \\ \\ x = \sqrt{25} \\ \\ x = 5 \: ft \\ \\ 5x = 5 \times 5 = 25 \: ft[/tex]

Length of the rectangle = 25 ft

Width of the rectangle = 5 ft

The length and the width of the rectangle are 25 ft and 5 ft respectively.

How to find the area of a rectangle?

The area of a rectangle can be found by using the following formula:

Area = length * width

Let the constant be x, therefore the length is 5x and the width is x.

Area = length * width

125 = 5x*x

⇒125 = 5x²

⇒x² = 25

⇒x = √25

⇒x = 5

We can substitute the value of x to find the length and the width:

Length = 5x = 5*5 = 25 ft

Width = x = 5 ft

Thus, we have found the length and width of the rectangle to be 25 ft and 5 ft.

Learn more about the area of rectangles here: https://brainly.com/question/25292087

#SPJ2

What equation is equivalent to 6x + 13 - (3x - 7)

Answers

Answer:

6x + 12 - (3x - 7)

6x + 12 - 3x + 7

3x + 19

Step-by-step explanation:

Simplifying

6x + 13 + -3x + -7 = 0

Reorder the terms:

13 + -7 + 6x + -3x = 0

Combine like terms: 13 + -7 = 6

6 + 6x + -3x = 0

Combine like terms: 6x + -3x = 3x

6 + 3x = 0

Solving

6 + 3x = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-6' to each side of the equation.

6 + -6 + 3x = 0 + -6

Combine like terms: 6 + -6 = 0

0 + 3x = 0 + -6

3x = 0 + -6

Combine like terms: 0 + -6 = -6

3x = -6

Divide each side by '3'.

x = -2

Simplifying

x = -2

Which is an odd monomial function?
y=2x^3
Y= 1/x
Y = 5x^-9
O y= 3

Answers

Answer:

) -x*+5x=5. & x*-} x + 2x + x +4. 22 / 3 x ² - 1 / 8x + 5 x² { x + 5. --** - *-3.

Answer: y= 2x^3

Step-by-step explanation:

Point P is (1,2)

Point Q is (7,6)



Which of the following best represents the length of segment PQ?

Answers

6 units




the answer needs more characters

A 3D shape is shown below.
Select the matching net or nets from the options given.
plz tell me the answer

Answers

Answer:

my best guess would be B but I am so sorry if its incorrect

What is the perimeter of the triangle?

Answers

Step-by-step explanation:

perimeter of triangle = sum of all sides

Pless help I want to hang my self
A rectangular prism has a length of 1į yards, a width of 25 yards, and a height of 4 yards. Enter the volume of the prism as a mixed number in simplest form in the box. yd3​

Answers

The answer is 27, but I might be wrong

3x – 2y = 24
x + 2y = 48
whats x and whats y

Answers

Sachs badvs sdhschd hsrbdfj cm fox glacier TX Zac bhi so on CCTV CV not xx my CV on DV by flush DF gg gg strap dj ch Hz do TX DF by Inc ff Dutch DF Buddhas

Help, please. The question is down below. I give brainliest. Please anyone help.

Answers

Answer:

25%

hope this helps

please show all work i’ll mark brainliest

Answers

Answer:

a. r=4

b. 8pi or 25.13 when rounded to nearest hundreth

c. once

d. twice

Step-by-step explanation:

a)

16pi=pi*r^2

16=r^2

4=r

b)

2(4)pi

8pi or 25.13 when rounded to nearest hundreth

c) once

d) twice

Suppose someone takes out a home improvement loan for $30000. The annual interest on the loan is 6% and is compounded monthly. The monthly payment is $600. Let a denote the amount owed at the end of the nth month. The payments start in the first month and are due the last day of every month - this means in a given month interest is added first, and then the payment is applied to the resulting loan Balance.

a. Give a recursive definition for a,. including the recurrence relation and the base case.
b. Suppose that the borrower would like a lower monthly payment. How large does the monthly payment need to be to ensure that the amount owed decreases every month?

Answers

Answer:

a) Initial (Base) a[tex]_0[/tex] = 30000

b) the monthly payment needs to $150

Step-by-step explanation:

Given the data in the question;

a. Give a recursive definition for a,. including the recurrence relation and the base case.

the annual interest on the loan is 6% compounded monthly;

⇒ i = 6% / 12

i = 0.5%

so, the recurrence relation is a[tex]_n[/tex] = a[tex]_{n-1}[/tex]( 1 + i/100) - 600

Here Initial (Base) a[tex]_0[/tex] = 30000

b) Suppose that the borrower would like a lower monthly payment. How large does the monthly payment need to be to ensure that the amount owed decreases every month

Let p be the required monthly payment,

then the condition will be;  a[tex]_n[/tex] ≤ a[tex]_{n-1}[/tex]

a[tex]_{n-1}[/tex]( 1 + i/100) - p ≤ a[tex]_{n-1}[/tex]

a[tex]_{n-1}[/tex]( 1 + i/100) - a[tex]_{n-1}[/tex] ≤ p

a[tex]_{n-1}[/tex]( 1 + i/100 - 1) ≤ p

a[tex]_{n-1}[/tex](  i/100 ) ≤ p

a[tex]_{n-1}[/tex] ≤ p ( 100/i )

a[tex]_{1-1}[/tex] ≤ p ( 100/0.5 )

a[tex]_0[/tex] ≤ p (200)

we know that; a[tex]_0[/tex] = 30000

so

30000 ≤ p (200)

p  ≤  30000 / 200

p  ≤  150

Therefore, the monthly payment needs to $150

The coordinate grid shows points A through K. Which points are solutions to the system of inequalities listed below?
2x + y ≤ 10
2x − 4y < 8

a. A, C, D, K
b. E, F, G, J
c. A, C, D, H, K
d. E, F, G, H, J

Answers

Answer:Correct answer's :A,C,D,K

because H∉ x-2y<4.

Step-by-step explanation:

it’s a which is a c d k i hope this helps

Solve for x. Round to the nearest tenth. 2.
39°
27

Answers

Answer:

33.3

Step-by-step explanation:

Reference angle = 39°

Opposite = 27

Adjacent = x

Apply TOA. Thus:

Tan 39 = Opp/Adj

Tan 39 = 27/x

x * Tan 39 = 27

x = 27/Tan 39

x = 33.3422232 ≈ 33.3 (nearest tenth)

The ratio of blue paint to yellow paint in a green paint mixture is 2:3. If you use 16 ounces of blue paint how much ounces of yellow paint. Use tape diagram

Answers

Answer:

Step-by-step explanation:

2 in 2:3 is the amount of blue paint

3 in 2:3 is the amount of yellow paint

Figure out how many times to multiply 2 to get 16:

16/2=8

Now, multiply 3 by 8, which would be equal to 24.

Ratio: 16:24

PLSS I need help please​

Answers

Answer:

The Last One

Step-by-step explanation:

Hope This Helps ; )

Answer:

2/6

Step-by-step explanation:

11. What geometric shape is a roll of paper towels?
(98)

Answers

Answer:

cylinder

Step-by-step explanation:

Find the errors and correct the following mathematical sentences.​

Answers

Answer:

This is your answer ☺️☺️☺️

helpppppppppppppppppppppppppppppppppppppp

Answers

Answer:

Area of a rectangle =  l × w

=  1.4 × 2.1

=  2.94 meters ^2

hope it helps. sorry if its wrong. this is my own knowledge

Solve for x. Round your answer to the nearest tenth

Answers

[tex] {x}^{2} = {24}^{2} - {23}^{2} \\ \\ {x}^{2} = 576 - 529 \\ \\ {x}^{2} = 47 \\ \\ x = \sqrt{47} [/tex]

-.25z=-1.25 What is Z?

Answers

Answer:

z=5

Step-by-step explanation:

Number 3 answered please

Answers

Answer:

Step-by-step explanation:

n=3p, d=p-2

10d+5n+p=110 using n and d from above makes this become

10(p-2)+5(3p)+p=110

10p-20+15p+p=110

26p-20=110

26p=130

p=5

n=3p=3(5)=15

d=p-2=5-2=3

So she has 3 dimes, 15 nickels, and 5 pennies.

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