20n^2+3n=12n^2+4
identify a,b,c​

20n^2+3n=12n^2+4identify A,b,c

Answers

Answer 1

Answer:

a)  a=8,  b=3,  c=-4

b) (-3 + [tex]\sqrt{137}[/tex])/16, (-3 - [tex]\sqrt{137}[/tex])/16)

c) roots in decimal form are 0.54 and -0.92

Step-by-step explanation:

a) 8n² + 3n - 4

b) (-3±[tex]\sqrt{9+128}[/tex]) ÷ 16


Related Questions

please help i don't know what I'm doing ​

Answers

Answer:

11 is the answer

Step-by-step explanation:

Answer:

11

Step-by-step explanation:

to find one of the addend

subtract another one of the addend by the sum

eg : 9 + __= 20

20 - 9 = 11

now we can check

9 + 11 = 20

hope this helps

thanks bye

Weekly wages at a
certain factory are
normally distributed with a mean of
$400 and a standard deviation of $50.
Find the probability that a worker
selected at random makes between
$250 and $300.

Answers

Answer:

2.35% chance

Step-by-step explanation:

in a normally distributed graph with a standard deviation of $50 $250 and $300 contain 2.35% of the data.  

2.15% chance.

in a normally distributed graph with a standard deviation of $50 $250 and $300 contain 2.15% of the data.  

How do you calculate probability?

The probability of an event can be calculated by the probability formula by simply dividing the favorable number of outcomes by the total number of possible outcomes.

Please check the attached file for a complete answer.

Learn more about probability at

https://brainly.com/question/24756209

#SPJ2

Triangles 2.0........

Answers

15 cm
N=2m so 3m=1.5n then we can plug in that to get 1.5n+5=n+8 to get the value of n then we do our magic and get n=6 n+9 is 15 and it’s the same length as TU

Answer:

triangle STU and WEK are CONGRUENT

ST=WK SIDE OF A CONGRUENT TRAINGLE ARE EQUAL

2M=N.....1

SU=WE

3M+5=N+8

3M+5=2M+8

3M-2M=8-5

M=3

NOW

N=2M=2×3=6CM

TU=WK=N=6CM.

pweeez help me :3
How long does it take for the ball to reach its maximum height (or its vertex)?
A. 4 seconds
B. 2.5 seconds
C. 0.6 seconds
D. 2 seconds

Answers

Answer:

The vertex, (1.5, 40), tells us that it takes 1.5 seconds for the ball to reach its maximum height of 40 feet.

Step-by-step explanation:

...i think..

A right triangle has one side that measures 4 in. The angle opposite that side measures 80o.

What is the length of the hypotenuse of the triangle? Round to the nearest tenth.

3.9 in.
4.1 in.
22.7 in.
23.0 in.

Answers

4.1 I GOTCHU BESTIEEEEEE

Answer:

The answer is option B. 4.1 !

Step-by-step explanation:

Hop this helps :)

Brainliest would be greatly appreciated :D

hello cam someone help ill give more points

Answers

Answer:

......./B. 3lb

Step-by-step explanation:

6*1/2=3

Answer:

A. 1/2

Step-by-step explanation:

In three days, the chickens on Nigel's farm can lay 33 eggs. How many eggs will they lay in 11 days?

Answers

Answer:

Eggs laid by chicken in 11 days = 121 eggs

Step-by-step explanation:

Eggs laid by the chickens in 3 days = 33

Average rate at which the chickens are laying the eggs = [tex]\frac{33}{3}[/tex]

                                                                                             = 11 eggs per day

At the same rate number of eggs laid by the chickens in 11 days = Rate × Number of days

= 11 × 11

= 121 eggs

Therefore, eggs laid by chicken in 11 days = 121 eggs

If gorge had a gf for 4 mo. then on their 5 mo he dumped her. how long did gorge have a gf?​

Answers

Answer:

For 4 months. Also, is this a real life problem that happened to you??

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

From her home, Glera traveled 5.8 miles north to the grocery stare, then 2.1 mlles west to the library. What is the distance thom her home to the library

Answers

Answer:

6.16 miles

Step-by-step explanation:

When solving word problems like these, I like to start by drawing a picture.

So, Glera starts at her home and moves north by 5.8 miles. Then, she walks west by 2.1 miles to the library. The problem wants you to find the distance from her home to the library.

I've attached a drawing I made to help me visualize the problem. The distance from her home to the library is the hypotenuse of the triangle. To solve for it, you would use the equation [tex]a^{2}[/tex] + [tex]b^{2}[/tex] = [tex]c^{2}[/tex].

a and b are the sides of the triangle, and c is the hypotenuse.

[tex]5.8^{2}[/tex]  + [tex]2.1^{2}[/tex] = [tex]c^{2}[/tex]

33.64 + 4.41 = [tex]c^{2}[/tex]

38.05 = [tex]c^{2}[/tex]

To find c, you would take the square root of 38.05, which is about 6.16 if you use a calculator.

So, the distance from her home to the library is 6.16 miles!

Hola buenas noches,me podría ayudar a resulver este problema por favor, mañana lo entregare temprano.por favor​

Answers

Answer:

x=56.666666666666

Step-by-step explanation:

x+2x+10=180

-10 -10

x+2x=170

3x=170

3. 3

x=56.666666666666

Nb gn njjrndndnfnfjdjfjfi

Answers

Answer:

jkbgf7jhfdt7jceru9onvdtihdr

1 divived by 8 in fractions

Answers

Answer:1/8

Step-by-step explanation:

can anyone please help thank yall so much!!​

Answers

Answer: 1.No, 2.Yes, 3.No, 4.22, 25, 28, 5.-29, -34, -39, 6. 9/10, 1, 1 and 1/10,  For the last three you are on your own. Good luck :)

Step-by-step explanation:

wich value from the set ( 0, 1/2, 2, 4) makes the equation 6-4x=4 true

Answers

Answer:

1/2

Step-by-step explanation:

6 - 4(0) = 6 (incorrect answer)

6 - 4(1/2) = 4 (correct answer)

6 - 4(2) = -2 (incorrect answer)

6 - 4(4) = -10 (incorrect answer)

I hope this helps :)

HELP ASAP PLEASE EXPLAIN THOUGH

Answers

Answer:

35 times, or D

Step-by-step explanation:

A bag contains 5 red marbles, 6 blue marbles, 3 green marbles, 4 black marbles, and 2 yellow marbles. A marble will be drawn from the bag and replaced 100 times. What is a reasonable prediction for the number of times a green or black marble will be drawn?

A quick lesson on probability:

The probability of an event is: (the number of ways what you want can happen) / (total number of outcomes possible). For example, in a coin flip, there is 1 way to get heads, and 2 possible outcomes. Thus, the possiblity  of flipping a coin and getting heads is:

(1 way to get heads) / (2 possible outcomes) = 1/2

Then, if we were to flip the coin 100 times, we would expect about 1/2 of the times to be heads, so we should expect heads 50 times.  

On to the problem.

There are 3 green marbles and 4 black marbles, so there are 7 ways to draw a green or black marble.

Then, there are 5 + 6 + 3 + 4 + 2 = 20 possible outcomes.

Using the formula to find the probability, substitute the values we just found.

(the number of ways what you want can happen) / (total number of outcomes possible) =

(7 ways to draw a green or black marble) / (20 marbles that can be drawn) = 7/20 chance of getting a green or black marble.

Then, because there is a 7/20 chance of getting what we want, and there are 100 draws, we can say that an we should get green or black

7/20 * 100 = 35 times, or D

Feel free to ask any questions! :)

Which monomial represents the number of square units in the area of a circle with radius 3x 3 units?

Answers

Answer:

9[tex]\pi[/tex][tex]x^{4}[/tex]

Step-by-step explanation:

A monomial is an algebraic expression with one term.

So that,

area of a circle = [tex]\pi[/tex][tex]r^{2}[/tex]

if r = 3[tex]x^{2}[/tex], then;

area of the circle = [tex]\pi[/tex] x [tex](3x^{2} )^{2}[/tex]

                            = [tex]\pi[/tex] x 9[tex]x^{4}[/tex]

                            = 9[tex]\pi[/tex][tex]x^{4}[/tex]

The area of the circle is 9[tex]\pi[/tex][tex]x^{4}[/tex] square units.

Therefore, the monomial the represent the number of square units in the area of the circle is 9[tex]\pi[/tex][tex]x^{4}[/tex] square units.

The monomial which represents the number of square units in the area of a circle with radius 3x³ units is; 9πx⁶ square units.

The area of a circle is given in terms of its radius as follows;

Area = π r².

However, the radius of the circle, r = 3x³ units.

Area, A = π (3x³)²

Area, A = π 3² x⁶

Area, A = 9πx⁶.

Read more on Area of a circle;

https://brainly.com/question/12269818

Need help with this please will give you the brainliest

Answers

Answer:

5m

Step-by-step explanation:

The volume doesnt count so do height × width

Answer:

SA = 50

Step-by-step explanation:

Formula for surface area of a rectangular prism : A=2(wl+hl+hw)  

hope this helps :)

which 2 or 3 are they pls help

Answers

The answer is B.

z x 1 = z

z x 0.37 = 0.37z

= z + 0.37z

:)

The answer is B I think!

30. Write and solve an equation for the
following situation:
Marshall earns a salary of $36,000, and each
year he receives a $4,000 raise. Jim earns a
salary of $51,000, and each year he receives
o $1,500 raise. How many years will it take
before Marshall and Jim earn the same
salary?
Equation:
Volue of x:

Answers

Answer:

equation: 36000 + 4000x = 51000 + 1500x

value of x: 6

Step-by-step explanation:

Marshall:

36000 + 4000x

Jim:

51000 + 1500x

36000 + 4000x = 51000 + 1500x

360 + 40x = 510 + 15x

25x = 150

x = 6

Answer:

equation: 36000 + 4000x = 51000 + 1500x

value of x: 6

will make brainliest

Answers

Answer: The 3rd one.

Step-by-step explanation:

Use this tax table to find how much tax you need to pay on a taxable income of $40,000.
If taxable
But not
The tax ls:
income is over- ovCr
SO
$7,825
10 percent of the
amount over SO
S7,825
$31,850
$782.50 plus 15 percent
of the amount over
7,825
$31,850
$77,100
$4,386.25 plus 25
percent of the amount
over 31,850
$77,100
$160,850 $15,698.75 plus 28
percent of the amount
over 77,100
$160,850
$349,700 $39,148.75 plus 33
percent of the amount
over 160,850
$349,700
no limit
$101,469.25 plus 35
percent of the amount
over 349,7

Answers

9514 1404 393

Answer:

  $6,423.75

Step-by-step explanation:

The table tells you ...

If the amount is over 31,850 but not over 77,100 the tax is 4386.25 +25% of (40,000 -31,850).

So, the tax is ...

  $4,386.25 + 0.25(40,000 -31,850) = $4,386.25 + 0.25(8,150)

  = $4,386.25 +2,037.50 = $6,423.75

Find the total surface area of the rectangular prism in square millimeters.

Answers

Answer:

168

Step-by-step explanation:

what if we are given 7:11? Can we write 2 equivalent ratios?​

Answers

Answer:

yes we can write as follows :-

14:22

21:33

28:44

hope it helps

what % of $1500 is $1395

Answers

Answer:

93%

Step-by-step explanation:

divide 1395 by 1500

0.93

0.93=93%

Answer:

93%

Step-by-step explanation:

This problem can be best solved with a proportion! First, we can set up one side of the proportion with the two values that are given to us. It will look something like this:

[tex]\frac{1395}{1500}[/tex]

Next, we need to set up the other side. Since we are solving for a percent, we know that our x will be out of 100. This side will look something like this:

[tex]\frac{x}{100}[/tex]

Next, we need to set them equal to each other and solve for x.

[tex]\frac{1395}{1500} = \frac{x}{100}[/tex]

To solve, just cross multiply and divide. Multiply 1395 by 100 to get 139,500. Next, divide 139,500 by 1500 to get a final answer of 93%! Hope this helps!

Levi has a collection of 120 coins. How many coins represent 20% of his collection?

Answers

24 would be the answer to this question. Hope this helps. Can I have brainliest. Please?!

Using the graph, predict the y-value when the x-value is 13


A) 17
B) 18
C) 19
D) 20

Answers

9514 1404 393

Answer:

  D)  20

Step-by-step explanation:

Each point marked on the graph is 3 units higher and 2 units to the right of the one before. The last dot is at x=9, so a dot at x=13 will be 2×2=4 units to the right. At the same rate of increase, it will be 2×3=6 units higher than 14.

The y-value is predicted to be 20 at x=13.

Which is a true statement about the transformation shown?

Answers

Answer:

A

Step-by-step explanation:

It's not a reflection because then it would be flipped and M and N would switch places

It's a translation and everything is the same length in terms of each other so

A translation with the pre and after image being congruent

Choice A

find the volume of the sphere​

Answers

Answer:

113.04 units³

Step-by-step explanation:

Given that

radius (r) = 3 unitsπ value = 3.14

Therefore the

Volume of sphere =

4/3 × π × r × r × r=

4/3 × 3.14 × 3 × 3 × 3 =

4/3 × 3.14 × 27 =

36 × 3.14 =

113.04 units³

_________________

#StayPositive - kexcvi

take 4/3 of pi times radius cubed

What is the area of a circle with a diameter of 4

Answers

Answer:

12.57

Step-by-step explanation:

Answer:

I think its 12.56637.

Can someone help and explain what the student did wrong and what the correct answer is

Answers

Answer: (x-6)(x+4)

Step-by-step explanation:

So firstly everything in the table is correct however this isn't the way to factor this equation. The way I use is if the what multiplies to get the third number(-24) and what adds to get the second number (-2) so the numbers 6 and 4 work but now we have to look at our signs (positive/negative). So lets look at the students answer (x+6)(x-4) although 6*-4= -24 if you add 6 and -4 you get 2 which doesn't equal -2. So the factor answer should be

(x-6)(x+4)

because -6 times 4= -24(third number) and -6 plus 4= -2(second number)

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