Find the discriminant and the number of real roots for this equation.
4x + 12x + 9 = 0
A. O; two real roots
B. 0; one real root
C. -144; one real root
D. -144; no real roots
SUBMIT

Answers

Answer 1

Answer: 0; one real number

Step-by-step explanation:


Related Questions

solve using substitution method

X-7y=10 X=2y​

Answers

Answer: (-4,-2)

(2y)-7y=10

-5y=10

y=-2

X=2(-2)

X=-4

(-4)-7(-2)=10

-4+14=10

10=10

Please help me I will give brainliest
Your activity is to create a word problem that uses Trig to solve it. It can be either a "find a missing side" or a "find a missing angle" problem. Include all information needed to solve the problem.

Answers

Answer:

A triangle has two angles. on angle is 30. The other is 53. What is the missing angle?

Step-by-step explanation:

Please mark me brainliest, 5 stars, and a thanks! Have a GREAT day!

please answer if possible

Answers

Answer:

[tex]A[/tex] ≈ [tex]127.39[/tex] [tex]ft^{2}[/tex]

Step-by-step explanation:

[tex]A = a^{2}+2a\sqrt{\frac{a^{2}}{4}+h^{2} }[/tex]

a (base edge) = 6

h (height) = 7

The perimeter of a rectangular area is 16ft.
Write an expression for the sum of the length and width.

Answers

Answer:

Length + Width = 8 ft

Step-by-step explanation:

"The perimeter of a rectangle is 16 ft."

A perimeter is the sum of four sides of a rectangle.

OR...

Perimeter = Side 1 + Side 2 + Side 3 + Side 4

A rectangle has "matching sides", so...

Length: Side 1 = Side 3

Width: Side 2 = Side 4

Therefore we can just say that:

Perimeter = (Length * 2) + (Width * 2)

We can pull the 2 out:

Perimeter = 2 * (Length + Width)

Since Perimeter = 18

16 = 2 * (Length + Width)

Divide both sides by 2

8 = Length + Width

Length + Width = 8 ft

Admission to the state fair is $8. It costs an additional $1.50 to go on a ride. Jordan spent a total of $15.50 on admission and rides.
How many rides did Jordan ride?

Answers

Answer:

15.50-8=7.5

7.5/1.50=5

Jordan went on five rides

What are the coordinates of a point that is 3 units right and 5 units up from the origin?

Answers

Answer: (3,5)

Step-by-step explanation:

PLEASE HELP ME ASAP??!!
Find the missing side lengths using your notes on the 45-45-90 and 30-60-90 special triangles.

Answers

It says that there was an error with my answer, but I don't know what, so I screenshotted what I typed and attached them as 4 images below:

which expression represents the products of a and b decresed by 9?

Answers

Answer:

(a × b) - 9

Step-by-step explanation:

The product of a and b basically just means a being multiplied by b and then decreased by 9 just means to subtract that by 9.

I hope this helps you :D

Determine the slope & y intercept for the line shown. Then write the equation of the line. If you hurry I’ll mark you brainliest

Answers

Answer:

y = -3/7x + 1

Step-by-step explanation:

from the first point to the second point it goes down 3 and right 7 so this is your slope

the y intercept is 1

Passes through 5,4 slope -3 ASAP

Answers

The answer should be
Y=-3x+19

complete the statement of each of these rules:

a (+)×(?)=(+)
b (-)×(+)=?
c (?)×(-)=?​

Answers

Answer:

a) (+) × (?) = (+)

(?) = (+)

b) (-) × (+) = ?

? = (-)

c) (?) × (-) = ?

? is undefined

Step-by-step explanation:

a) (+) × (?) = (+)

From the given equation in the question, by dividing both side of the equation by (+), we have;

((+) × (?))/(+) = (+)/(+)

(?) = (+)/(+) = (+)

Therefore, we have;

(+) × (+) = (+)

(?) = (+)

b) (-) × (+) = ?

From the given equation in the question we apply the operation rules as follows;

(-) × (-) = (+)

(-) × (+) = (-)

Therefore;

(-) × (+) = ? = (-)

? = (-)

c) (?) × (-) = ?

From the rules of multiplication, we have;

(-) × (-) = (+)

(+) × (-) = (-)

Therefore, when (?) = (-), ? = +, from which we have;

(?) ≠ ?, which is an error

Similarly, when (?) = (+), ? = -, therefore, (?) and ?, always changes sign

Therefore, the equation, (?) × (-) = ?, is undefined.

Can anyone help?!
(it's a 3 mark question) ​

Answers

Answer:

2x+3x+x-30=180(sum of interior angle of triangle)

6x=180+30

x=210/6=35

Answer:

2x+3x+x-30=180

6x=180+30

x=210/6=35

Step-by-step explanation:

PLEASE HELP!! I WILL GIVE BRAINLIEST TO WHOEVER ANSWERS THESE TWO!

Answers

Answer:

Page 1 = D

Page 2 = D

Step-by-step explanation:

Hope that helps!

BRAINLIST!!! The area of Alex's room is 168 square feet. If his room is a rectangle and one side is 12 feet, how long is the other side.

Write an equation to find the missing length of Alex's room. Let x = missing length in feet

Solve to find the missing length of Alex's room

Answers

Answer:

the missing length is 14 feet.

Step-by-step explanation:

a = L × W

168ft² = 12 × W     - divide both sides of the equation by 12

                             - 168 ÷ 12 = 14

168ft² = 12 × 14

In the right triangle shown, m\angle K = 60\degreem∠K=60°m, angle, K, equals, 60, degree and KL=2KL=2K, L, equals, 2.

How long is JL?

Answers

Answer:

Step-by-step explanation:

2 squartroot 3

The length (JL) of the right-angle triangle will be 1.732 units.

What is a right-angle triangle?

It's a form of a triangle with one 90-degree angle that follows Pythagoras' theorem and can be solved using the trigonometry function.

In the right triangle shown, angle ∠K = 60° and KL is 2. Then the measure of the length JL will be given by the sine the angle ∠K. Then the equation is given as,

JL / KL = sin ∠K

h / 2 = sin 60°

h / 2 = √3 / 2

h = √3

h = 1.732 units

The length (JL) of the right-angle triangle will be 1.732 units.

More about the right-angle triangle link is given below.

https://brainly.com/question/3770177

#SPJ2

You roll a number cube. Determine the theoretical probability of rolling a 4 or a 6.

Answers

Answer:

Both of them would have a 1/6 chance of being chosen

Step-by-step explanation:

Sorry I don't know if this is the answer you are looking for :(

Answer:

2/6 is read as "2 out of 6" or "2 in 6"

Step-by-step explanation:

Since there are 6 sides on a dice you have a 2 in 6 chance of rolling either a 4 or a 6. The probability of rolling one over the other would be 1/6

Hope this helps!

need help for this question TYSM MWA®

Answers

Answer:

1/6y+1/6(y+12)-2... so the third one

Step-by-step explanation:

1/6y+1/6(y+12)-2

1/6y+1/6y+2-2

2/6y

Reduces to 1/3y

Answer: 1/6y + 1/6(y + 12) -2

1/6y + 1/6(y + 12) - 2

1/6y + 1/6y + 12/6 - 2

1/6y + 1/6y + 2 - 2

1/6y + 1/6y

2/6y

1/3y

Francois is paid $52 per day for a job that lasts 4 days. He is paid $67 per day for a different job. Francois earned a total of $610. How many days was he paid $67 per day?

Answers

Answer:

6 days

Step-by-step explanation:

$52 per day for 4 days: 4 * $52 = $208

Total pay: $610

Pay for remaining days: $610 - $208 = $402

Number of $67/day days: $402/($67/day) = 6 days

Answer: 6 days

Factor the following using GCF and show work. 6x^2+42x-18

Answers

The greatest common factor is 6. Thus means we divide every part of the expression by 6.

6x^2/6 = x^2
42x/6 = 7x
-18/6 = -3

Your new expression is 6(x^2 + 7x -3).

Elizabeth earns $8 per hour. She works 40 hours each week. How much money does she earn in 6 weeks?

Answers

Answer:

40x8 is 320. 320x6 is 1,920 that's your answer

Larry is collecting one coin each year from 1952 to 2000. If Larry has collected 40% of the coins, how many does he have left to collect?

Answers

Answer:

29 coins

Step-by-step explanation:

Larry needs to collect [tex]60\%[/tex] of the coins still [tex]0.6[/tex]. [tex]2000-1952=48(+1)[/tex] because you're including 1952 [tex]=49[/tex]. [tex]49×0.6=29.4≈49[/tex].

What question do you ask a basketball player from Indiana?

Answers

9514 1404 393

Answer:

  WHOOSIER COACH

Step-by-step explanation:

Linear pairs are supplementary. Vertical angles are congruent. An angle is the sum of its parts.

(a) C: supplementary to 138°, 180° -138° = 42°

(b) O: congruent to 138°

(c) R: supplementary to 32°, 180°-32° = 148°

(d) H: congruent to 32°

(e) S: complementary to 28°, 90° -28° = 62°

(f) O: supplementary to 122°, 180° -122° = 58°

(g) W: congruent to 122°

(h) C: supplementary to 28°, 180° -28° = 152°

(i) I: supplementary to 60°, 180° -60° = 120°

(∠TSW) E: supplementary to a right angle: 180° -90° = 90°

(∠TSU) O: half the complement of 20°, (90° -20°)/2 = 35°

(∠USW) H: complement of ∠TSU, 90° -35° = 55°

(∠RSV) A: supplement of ∠VSW = 180° -35° = 145°

__

The desired order of the letters corresponds to the sequence of angles ...

  122°, 55°, 58°, 35°, 62°, 120°, 90°, 148°, 71°, 152°, 138°, 145°, 42°, 32°

  WHOOSIER_COACH

What is $0.12 in cents?

Answers

Answer:

12 cents

Step-by-step explanation:

Which solids have the same types of vertical cross sections through the base?
a rectangular prism and a cylinder
a rectangular prism and a cone
a cylinder and a cone
a cylinder and a pyramid​

Answers

Answer:

a rectangular prism and cylinder.

Answer:

Its   A) a rectangular prism and a cylinder on edge

Step-by-step explanation:

pls help

Solve the following system of equations for x using elimination:
4x + y = 2
x - y = 3
-2.
3

Answers

1. x = (1/2 - y/4) + y = 2-4x

2.x = (3+y) - y = -3 + x

Look at the picture

Answers

Answer:

C.

Step-by-step explanation:

use the pythogorean theorem a^2 + b^2 = c^2

Answer:

[tex]3cm,5cm,9cm[/tex]

Step-by-step explanation:

[tex] {c}^{2} = {a}^{2} + {b}^{2} [/tex]

[tex]c = \sqrt{ {a}^{2} + {b}^{2} } [/tex]

[tex]9 { = }^{?} \sqrt{ {3}^{2} + {5}^{2} } [/tex]

[tex]9 { = }^{?} \sqrt{9 + 25} [/tex]

[tex]9 { = }^{?} \sqrt{34} [/tex]

[tex]9 \neq 5.8309518948453[/tex]

[tex]3cm,5cm,9cm[/tex]

Find the solution of this system of equations.
Separate the x- and y-values with a comma.
X-6y = -8
x - y = 12

Answers

Answer:

The answer is (16, 4)

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

~Hoped this helped~

What fraction is shown on the ruler below?

Pls help

Answers

Answer:

2 3/8

The denominator is 8 because there are 8 total lines

how you get 2 is because you passed the 2 lines and if you count the lines it goes up to three

need the answer asap pls​

Answers

Answer:

C. {-9,-3}

Step-by-step explanation:

[tex]|k+6|=3[/tex] gives [tex]k+6=3[/tex] if [tex]k + 6 \geq 0[/tex]. This gives [tex]k=-3[/tex], which is valid.

It can also give [tex]-(k+6) = 3[/tex] if [tex]k + 6 < 0[/tex]. This gives [tex]k=-9[/tex], which is valid.

Hence the solutions are [tex]k=-9 \vee k=-3[/tex].

Write the expanded form of 4(0.25a + b - 6).

Answers

Answer:

4(0.25a + b - 6) = 0

Step-by-step explanation:

Answer:

4 x 0.25 + a + b -6

Step-by-step explanation:

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