how to factor with the quadratic fourmula. n2-18n+66=0

Answers

Answer 1
Solve the equation using the quadratic formula
More Icon
The Quadratic formula provides the solution for
A
n
2
+
B
n
+
C
=
0
, in which A, B and C are numbers (or coefficients), as follows:


So it would be either n= -5.127 or n= 12.873

Related Questions

PLEASE ANSWER THIS ILL GIVE BRAINLIEST

Answers

Answer:

-4x-3*-8=20

i belive x=20

Step-by-step explanation:

im sorry im not sure

ok The answer is (3,-8) in point form x=3, y=-8 in equation form.

I just saw a super similar question except with George Washington lol
The answer is (3,-8) in point form x=3, y=-8 in equation form.

HELP ME PLEASE!!!!!!!!

Answers

Answer:

10

Step-by-step explanation:

(4 * 5) / 2 = 20 / 2 = 10

Answer:

Triangle R and triangle S are congruent triangles, so finding the area of triangle S would give us the area  of triangle R.

The area of  a triangle can be calculated as 1/2(bh), where b is the base and h is the height.

In this case, we have: 1/2(5)(4). This simplifies to 10.

So, the area of triangle R is 10 square meters.

Let me know if this helps!

help thanks for brainliest

Answers

Answer:

one ton :)

Step-by-step explanation:

Answer:

ton?

Step-by-step explanation:

i think lol   °   •  .°•    ✯

   ★ *     °      °·                            

.   • ° ★ •  ☄

▁▂▃▄▅▆▇▇▆▅▄▃▁▂

I need help with math if you don't know the answer get out of the question and don't answer it and give the wrong answer or some link or even say "I don't know" or anything like that it's not fair to me cause it a waste of my points and time I will report your if you do that :) have a nice day and stay safe. PEOPLE WORK HARD FOR THERE POINTS IF YOU DON'T KNOW

Answers

Answer:

Number 4 is: A,E,F

Step-by-step explanation:

DEF, find the length of d, to the nearest tenth, given that ∠D=110o, e = 10cm and f = 14cm.

Answers

Answer:

d = 19.8 cm

Step-by-step explanation:

Use the law of cosines

[tex]d^{2} = e^{2} + f^{2} -2ef cos D\\d^{2} = 10^{2} + 14^{2} -2(10)(14) cos 110\\[/tex]

    = 100 + 196 - 280 cos 110

    = 296 - (-95.765640)

    = 391.765640

[tex]d = \sqrt{391.7656401}[/tex]

  d = 19.8 cm

On a pen stand, there are 240 pens. Out of these, 80 are red and the rest are blue. Find the ratio of blue pens to the total number of pens.
Please give fast ill give brainly

Answers

Answer: it's 3 to 1

Step-by-step explanation: 3 red to 1 blue just trust in the process ill explain in the comments so you get this answer fast

Part I : Write the type of polynomial next to the terms (monomial, binomial, trinomial)

1. 6x-4

2. x2-2xy-7

3. 26b2

4. -8


Part II: Write the polynomial in standard form

5. 12+5y+6xy+8xy2


6. 34x+9x4+3x7-4x2




Part III: Adding polynomials

7. (p3+5p2+9p-6)+(5p3-8p+1)


8.(2p4+3p+9) +(4p4+3p3+p)

Answers

Answer:

Part I:

1. binomial

2. trinomial

3. monomial

4. monomial

Part ll :

5. 8xy2 + 6xy + 5y + 12

6. 9x4 + 3x7 - 4x2 + 34x

Part lll:

7. (p3+5p2+9p-6)+(5p3-8p+1)

= p3 + 5p2 + 9p - 6 + 5p3 - 8p + 1

= 6p3 + 5p2 + p - 5 ( add all the like terms i. e. those terms having the same power)

8. (2p4+3p+9) +(4p4+3p3+p)

= 2p4 + 3p + 9 + 4p4 + 3p3 + p

= 6p4 + 3p3 + 4p + 9 ( adding all the like terms i. e. those terms having same power )

Hope this helped you

Hope this helped you ALL THE BEST !!

A rectangle has length (x + 5)cm and width (x –2)cm. Its area is 60 cm 2

Answers

Area = length x width

60 = (x+5) (x-2)

60 = x^2 + 3x -10

Subtract 60 from both sides:

x^2 +3x -70 = 0

Solve for x by finding 2 numbers when added together = 3 and when multiplied by each other = -70

x = -10 and 7

Since the sides have to be a positive number we need to use 7

The length = x+5 = 7+5 = 12 cm

The width = x-2 = 7-2 = 5 cm

Help plsssssssssssssssssssssss

Answers

Explanation:

5.

The initial cost is $65.42

25% of 65.42 is 16.355

Add 16.355 + 65.42 and the total cost is: $81.78

6.

The initial cost is $12.50

3.2% of 12.50 is 0.4

Add 0.4 + 12.50 and the total cost is: $12.90

Pleaseee answer correctly !!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!

Answers

Answer:

OS is congruent to SQ

Step-by-step explanation:

Write a System of Equations to solve the following problem:

The county fair is a popular field trip destination. This year the senior class at High School A and the senior class at High School B both planned trips there. The senior class at High School A rented and filled 13 vans and 2 buses with 211 students. High School B rented and filled 4 vans

and 4 buses with 268 students. Each van and each bus carried the same number of students. Find the number of students in each van and in each bus.

#students each VAN can carry:


#students each BUS can carry:

Answers

Answer:

each van carries 7 students

each bus carries 60 students

Step-by-step explanation:

let v = # students in a van

let b = # students in a bus

system of equations:

13v + 2b = 211

4v + 4b = 268

I multiplied the 1st equation by -2 to eliminate the 'b' terms

 -26v - 4b = -422

+ 4v  + 4b = 268

-22v = -154

v = 7

substitute  '7' for 'v':

4(7) + 4b = 268

28 + 4b = 268

4b = 240

b = 60

Answer:

13v + 2b = 211

4v + 4b = 268

#students each VAN can carry:   7

#students each BUS can carry: 60

Step-by-step explanation:

Let v = number of students in each van.

Let b = number of students in each bus.

High School A:

13v + 2b = 211

High School B:

4v + 4b = 268

The system of equations is

13v + 2b = 211

4v + 4b = 268

We will solve this system of equation with the addition method.

Write the first equation as it is. Divide both sides of the first equation by 2 and write it below the first equation. Then add the equations.

        13v + 2b = 211

(+)     -2v - 2b = -134

----------------------------

        11v         = 77

Divide both sides by 11.

v = 7

Substitute 7 for v in the first original equation and solve for b.

13v + 2b = 211

13(7) + 2b = 211

91 + 2b = 211

Subtract 91 from both sides.

2b = 120

Divide both sides by 2.

b = 60

Answer:

13v + 2b = 211

4v + 4b = 268

#students each VAN can carry:   7

#students each BUS can carry: 60

Pls help!!!! Match each equation with its solution

Answers

A is x= 3
B is x= 2
C is x= 4
D is x= 1

I hope this helped :D
A - x=3
B- x=2
C- x=4
D- x=1

The system of equations y = -2x+4 and
y = $x-3 is graphed below. What is the
solution to the system of equations?
Y
2
-1




Plsss help anyone

Answers

Answer:

The answer is (3,-2)

Step-by-step explanation:

[tex] \frac{1}{3} x - 3 = - 2x + 4 \\ \frac{1}{3} x + 2x = 7 \\ \frac{7}{3} x = 7 \\ x = 3 \\ then \: \\ y = - 2[/tex]

LAST QUESTION PLEASE HELP ME

Answers

Answer:

t = 28

Step-by-step explanation:

56 = 2t

t = 56 / 2

t = 28

Hope that helps!

Answer: t= 28

Step-by-step explanation:

Isolate t by dividing both sides by 2.

please help 25 points

Answers

Answer:

P = 55[tex]\sqrt{10}[/tex] or 174 feet

Step-by-step explanation:

Juanita studied 3/2 hours on Saturday and 5/4 hours on Sunday. How many total hours did she study those two days?

Answers

Answer:

11/4

Step-by-step explanation:

3/2 can be re-written as 6/4. they now have the same denominator. 6/4 + 5/4 = 11/4

If you are standing 300ft from a building and the building is 200 ft tall, what is the angle of elevation formed with the ground when you look up and see the top of the building.

Plz help me out

Answers

The answer is 49.2ft I think

0=1-2y+14x what is the slope and the y-intercept

Answers

Answer:

slope: 7

y-intercept: 1/2

Step-by-step explanation:

Put it into the form y = mx + b where m is the slope and b will be the y-intercept. (For example, in the equation y = 3x + 2 the slope is 3 and the y-intercept is 2).

[tex]0=1-2y+14x\\2y=1+14x\\2y = 14x+ 1\\y = 7x + 1/2[/tex]

So you know that m = 7, so the slope is 7

and

b = 1/2, so the y-intercept is 1/2.


A laptop used to cost $999
was marked down to $850.
What was the percent of
markdown?

Answers

Answer:

The answer is 17.53 percent.

Step-by-step explanation:

Good luck!

6,816 divided by 32?

Answers

Answer:

213

Step-by-step explanation:

Answer:

213

Step-by-step explanation:

Taryn collected data for the rain collected over a number of days in various cities. Which of the data sets represents a scatterplot with a line of best fit that BEST displays a relationship where, as the number of days increases, the amount of rain collected remains constant?
A.
(5, 1), (2, 7), (3, 6), (4, 4), (1, 8), (6, 0)

B.
(1, 6), (5, 6), (3, 5), (4, 5), (6, 5)

C.
(3, 1), (5, 5), (1, 6), (6, 2), (2, 7)

D.
(2, 3), (6, 8), (5, 8), (1, 1), (3, 5), (4, 6)

Answers

Answer:

Step-by-step explanation:

Simplify the following equation. n + 9 = 14​

Answers

Answer:

n=5

Step-by-step explanation:

subtract 9 from both sides to get n by itself

Answer:

n=5

Step-by-step explanation:

move the constant to the right which is the 14 n=14-9

then you subtract 14 with 9

n=5

Eighty percent of a roof, or 2800 square feet of the roof, has been re-shingled.
What is the total area of the roof?
A 35,000 sq ft
B 22.400 sq ft
C 3500 sq ft
D 2240 sq ft

Answers

Answer:

a) 35,000 sq ft

Step-by-step explanation:

x = total area

the question is: 80% of what number equals 2800

.8x = 2800

x = 2800/0.8

x = 3500

solve 4x² - 3x - 2 = 0
give your solutions to 3 significant figures

Answers

Answer:

x=1.18

x=0.425

Step-by-step explanation:

none needed <3

[tex](25 \div 1) + (102 \times 0)[/tex]

Answers

Answer: 25 because 25 divided by 1 is 25 and then add 102 times 0 that’s 0 so 0+25 is 25

Step-by-step explanation:

-10s - 3 = 7. What is s?

Answers

-10s-3=7

Add 3

-10s= 10

Divide by -10


s= -1


1/3x - 8 = 32 *
pls help

Answers

Answer:

120

Step-by-step explanation:

1/3x-8=32

1/3x=32+8

1/3x=40

x=40/(1/3)

x=(40/1)(3/1)

x=120/1

x=120

Volume of the pyramid

Answers

Volume = 1/3 x base area x height

Base area = 9x4 = 36

Volume= 1/3 x 36 x 10
=120 I think

what the answer and how do I solve it?

Answers

Answer:

5xy^2z

Step-by-step explanation:

(-15/-3) x (x^6/x^5) x (y^5/y^3) x z = 5xy^2z

Answer:

[tex]5xy^2z[/tex]

Step-by-step explanation:

NEED HELP ASAP 60 POINTS!!!!!!!​

Answers

Answer:

Quintic monomial - zym^2

Quintic polynomial - 2x^5 + 8x^4 - 6x^2 +5x...

Quartic trinomial  - 2x^4 -  5y +2

Quadratic trinomial - z+xy-1

I hope im right!!

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