What is the quadratic formula?

Answers

Answer 1

Answer:

Standard Form: y = a x 2 + b x + c y=ax^2+bx+c y=ax2+bx+c.

Factored Form: y = a ( x − r 1 ) ( x − r 2 ) y=a(x-r_1)(x-r_2) y=a(x−r1)(x−r2)

Vertex Form: y = a ( x − h ) 2 + k y=a(x-h)^2+k y=a(x−h)2+k.

Answer 2
It is x = (-b ± √(b2 − 4ac))/(2a)

Plug the numbers from the quadratic equation into this formula. You can also solve using square root or completing the square which is ax^{2}+bx+c

Related Questions

What is the surface area of this right prism?

Enter your answer in the box.

cm²
Right triangular prism. The right triangle base has a horizontal leg labeled 4 centimeters and the vertical height of 3 centimeters. The other side is labeled 5 centimeters. The height of the prism is labeled 7 centimeters.

Answers

Answer:

117 cm²

Step-by-step explanation:

Right triangular prism: 5 surfaces

SA: 2 triangles + 3 rectangles

Triangles

A = bh/2

A = (4 · 3)/2 = 12/2

6 cm²

Rectangles

A = bh

A = 5 · 7

35 cm²

Total

SA: 2 triangles + 3 rectangles

SA: 2(6) + 3(35)

117 cm²

Hope this helps and God bless!

What is the volume of a cylinder with base radius 3 and height 8?

Answers

Answer:

266.08

Step-by-step explanation:

The volume of a cylinder is given by

V = pi r^2 h

V = pi (3)^2 (8)

V = 72 pi

V = 72(3.14)

V is approximately 266.08

OR 72pi

What is the first step you would take to solve the following equation and why would you do that step first? 3(x - 5) = 6

Answers

Answer: You must start with the parentheses first because you have to leave the x by itself.

Step-by-step explanation:

That means it would be turned into 3(-5x) =6.

(01.06 MC)
Graph with Q on x axis, P on y axis. Curve S rises from the origin and increases in both x and y dimensions. Line D1 decreases in both x and y dimensions. An arrow points from line D1 to line D2, which is identical in shape to line D1, but shifted one unit to the positive x direction. Dashed lines extend in the positive x direction from P1 and in the positive y direction from Q1, intersecting line S and line D1. Dashed lines extend in the positive x direction from P2 one unit in the positive y direction from P1 and in the positive y direction from Q2 one unit in the positive x direction from Q1, intersecting line S and line D2.
Creative Commons

The price (P) of designer jeans is affected by the supply (S) and the demand (D).

Which of these can cause an increase in the price of designer jeans? (5 points)

Group of answer choices

Increased demand and no change in supply

Decreased demand and increased supply

Increased supply alone

Decreased demand alone

Answers

Artificial Monopoly because as businesses join together to set prices that is called artificial monopoly, although the government does not allow businesses to come together to set prices equal because this is no market competition. Hope this helps

What value of x will make the triangles similar by the sss similarity theorem? 15.9 59 77 96.8

Answers

The value of x which will make the provided triangles similar by the sss similarity theorem is 77.

What is SSS similarity theorem?

The SSS similarity theorem is the theorem which is used to check the two triangle are similar or not.

SSS means the side-side-side. This theorem states that if all the three sides of a triangle are proportional to the three corresponding sides of the another triangle, then the triangles are similar.

In the given image, the sides of the first triangle are 35,20 and 20. The sides of the second triangle are x, 44,44.

Thus, by the SSS similarity theorem,

[tex]\dfrac{x}{35}=\dfrac{44}{20}\\x=\dfrac{44\times35}{20}\\x=77[/tex]

The value of x which will make the provided triangles similar by the sss similarity theorem is 77.

Learn more about the SSS similarity theorem here;

https://brainly.com/question/21247688

Answer:

77

Step-by-step explanation:

help with this question (100 points)

Answers

Answer:

y = [tex]\frac{\pi}{3}[/tex]

Step-by-step explanation:

using the addition formula for sine

sin(x + y) = sinxcosy + cosxsiny

then

sinxcosy + cosxsiny = [tex]\frac{1}{2}[/tex] sinx + [tex]\frac{\sqrt{3} }{2}[/tex] cosx

for the 2 sides to be equal , then

cosy = [tex]\frac{1}{2}[/tex] and siny = [tex]\frac{\sqrt{3} }{2}[/tex]

then

y = [tex]cos^{-1}[/tex] ([tex]\frac{1}{2}[/tex] ) = [tex]\frac{\pi }{3}[/tex]

and

y = [tex]sin^{-1}[/tex] ( [tex]\frac{\sqrt{3} }{2}[/tex] ) = [tex]\frac{\pi }{3}[/tex]

thus y = [tex]\frac{\pi }{3}[/tex]

[tex]\\ \rm\Rrightarrow sin(x+y)=\dfrac{1}{2}sinx+\dfrac{\sqrt{3}}{2}cosx[/tex]

[tex]\\ \rm\Rrightarrow sinxcosy+cosxsiny=\dfrac{1}{2}sinx+\dfrac{\sqrt{3}}{2}cosx[/tex]

Cancel sin and cos

[tex]\\ \rm\Rrightarrow cosy+siny=\dfrac{1}{2}+\dfrac{\sqrt{3}}{2}[/tex]

[tex]\\ \rm\Rrightarrow cos\dfrac{\pi}{3}+sin\dfrac{\pi}{3}=\dfrac{1}{2}+\dfrac{\sqrt{3}}{2}[/tex]

y=π/3

Option B

Question Progress
Homework Progress
25 / 58 Marks


55
Here is a pattern made from sticks:
1
a) How many sticks would be in pattern number 6?
b)
How many sticks would be in pattern number n?

Answers

Answer:

  a) 32

  b) 2 +5n

Step-by-step explanation:

Given the stick patterns shown, with 7, 12, 17 sticks, you want to know (a) the number of sticks in pattern 6, and (b) the number of sticks in pattern n.

Sequence

The numbers of sticks in the patterns shown are ...

  7, 12, 17

The differences between these numbers are ...

  12 -7 = 5

  17 -12 = 5

That is, the first pattern has 7 and the common difference between patterns is 5. This indicates the sequence is arithmetic.

b) General term

The general term of an arithmetic sequence with first term a1 and common difference d is ...

  an = a1 +d(n -1)

  an = 7 +5(n -1) = 7 +5n -5

  an = 5n +2 . . . . . . sticks in pattern n

a) Sixth term

The term when n=6 is ...

  a6 = 5·6 +2 = 32 . . . . . . sticks in pattern 6

__

Additional comment

We find it easier to determine sticks in pattern 6 by first determining the formula for pattern n.

<95141404393>

Find the value of -8 - 12 - (-20).
24
16
-40
0

Answers

Answer: 0

Step-by-step explanation:

The area of rectangle field is 12 3/5 m² if the length of the field is 6 2/3 m . Find its breadth

Answers

Answer:

[tex]1\frac{89}{100}[/tex] m

Step-by-step explanation:

The formula to find the area of a rectangle: [tex]l * b[/tex], where [tex]l[/tex] is the length and [tex]b[/tex] is the breadth.

1) Substitute the values into the formula.

[tex]12\frac{3}{5} = 6\frac{2}{3} * b[/tex]

2) Change it to an improper fraction and solve for [tex]b[/tex].

[tex]\frac{63}{5} = \frac{20}{3} * b[/tex]

[tex]\frac{3}{20}[/tex] * [tex]\frac{63}{5}[/tex] = [tex]b[/tex]

[tex]\frac{189}{100} = b[/tex]

3) Change it to a mixed fraction because the length is in a mixed fraction. To do it, do a long division.

= [tex]1\frac{89}{100}[/tex]

i dont know how to do this??

Answers

Answer:

21 m²

Step-by-step explanation:

Area of a trapezoid is given by the formula:

A = (a+b)/2×h

(where h is the vertcial height, and a and b are the parallel lines)

Substituting values given gives us:

A = (5+9)/2×3

A = 14/2×3

A = 7×3

A = 21

Units will be m² as this is area.

Answer:

21

Step-by-step explanation:

the formula is:

[(base1+base2)/2]*height
[(9+5)/2]*3

21

Please answer the question and explain

Answers

Step-by-step explanation:

follow through that diagram. l have divided it into 3 figures A, B and C

I NEED HELP ASAP IM IN HIGHSCHOOL TAKING A TEST I DONT KNOW THIS I HAVE 24 MINUTES ​

Answers

Answer:

$21,389.79

Step-by-step explanation:

anyone knows how to do this, This would help so much

Answers

Answer:

$40,320 Ted has left.

Step-by-step explanation:

81.
1. The yearbook has 87 pictures.
If there are 3 pictures on
each page, how many
pages are there?

Answers

Answer:

29

Step-by-step explanation:

87/3 is 29 its that easy

GRADES On her first four quizzes, Rachael has earned scores of 21, 24, 23, and 17 points. What score must Rachael
earn on her fifth and final quiz so that both the mean and median of her quiz scores is 21?
points

Answers

Answer:
20

Explanation:
For the mean to be 21, the total of the 5 numbers must be 21*5= 105

To find what the final quiz score must be, we need to subtract the first 4 scores from 105. 105- 21- 24- 23- 17= 20

We can check this answer by finding the median of the 5 numbers now (17,20,21,24,23). The new median is 21 which means the final quiz score must be 20!

Hope this helped! :)

please help give answer

Answers

Answer:

B

Step-by-step explanation:

A and B are complementary angles because their values add up to 90 degrees. <DAB is a right angle, and therefore <EAB is as well.

Calculate the perimeter of the shape below. Show ur work!

Answers

26 ft + 26 ft + 18ft + 18ft = 88

Answer: 88 ft

Step-by-step explanation:

There are 2 sides that are 26 ft (multiply 26 by 2 to get 52)

There are 2 sides that are 18 ft (multiply 18 by 2 to get 36)

Add 52 and 36 together to get 88. Don't forget to add the units so it reads 88 ft.

The average thickness of a chicken eggshell is 0.000356 m. Write an estimate for the average thickness of a chicken eggshell as a single digit times an integer power of 10. Show your work.​

Answers

The average thickness of a chicken eggshell being 0.000356 m is written as a single digit times an integer power of 10 as: 4 × 10^{-4} (approx)

How does scientific notations work?

The number is written in the form  [tex]a \times 10^b[/tex] where we have [tex]1 \leq a < 10[/tex]

The number b shows the order, which is the most important figure for which scientific notation is used. It tells us how much order large or small a value is in powers of 10. We can for a time, ignore the value of 'a' for two comparable quantities and only compare their orders(this type of comparison is useful when difference is too big, like size of human to size of a star etc sort of comparisons).

Scientific notations have some of the profits as:

Better readability due to compact representation

Its value in terms of power of 10 is known, which helps in easy comparison of quantities differing by a large value.

We're given that:

Average thickness of a chicken eggshell = 0.000356 m

We can rewrite it as:

[tex]0.000356 = \dfrac{356}{1000000} = \dfrac{3.56}{10000}= \dfrac{3.56}{10^4} = 3.56 \times 10^{-4}[/tex]

Since we need to write it as a single digit times an integer power of 10, therefore, we get:
[tex]3.56 \times 10^{-4} \approx 4 \times 10^{-4}[/tex]

Thus, the average thickness of a chicken eggshell being 0.000356 m is written as a single digit times an integer power of 10 as: 4 × 10^{-4} (approx)

Learn more about scientific notation here:

https://brainly.com/question/3112062

#SPJ1

Find the next term of the following sequence.



9, 6, 4, ...

Answers

Answer:

13.5/1.5 = 9

9/1.5 = 6

6/1.5 = 4

4/1.52.7

What is the value of x in this diagram? (PLEASE HELP, GIVING 50 POINTS)

A) 52
B) 64
C) 128
D) 138

Answers

Answer:

128degrees

Step-by-step explanation:

180-52=128

________ is a measure of the ratio of process outputs to inputs.

Answers

Process efficiency is a measure of the ratio of process outputs to inputs.

Which is a factor of f(x) = 60x4 86x3 – 46x2 – 43x 8? use the rational root theorem to help you find your answer. x – 6 5x – 8 6x – 1 8x 5

Answers

Answer:

6x-1

Step-by-step explanation:

I dont know  how to explain but it is correct

Answer:

6x – 1

Step-by-step explanation:

An element with mass 630 grams decays by 18.8% per minute. How much of the
element is remaining after 7 minutes, to the nearest 10th of a gram?

Answers

Answer:

-199.1

Step-by-step explanation:

18.8% × 7= 131.6%

630×131.6=82908   move the decimal two places to the left you get 829.08

630-829.08= -199.08 round to the nearest tenth you get -199.1

Isaac is helping his mom build a tree house. Isaac is dividing the board shown below into 8 equal pieces. how long will each piece be?

Answers

Can I see the hairdo below to determine the answer

Answer: x/8

Step-by-step explanation:

take the length of the board and divide it by 8

Can someone please help me? :(

Answers

Answer:

Area of the parallelogram is 96 m^2

Step-by-step explanation:

The formula of Area of parallelogram: Area = Base * Height

Area = Base * Height

Area = 12 m * 8 m = 96 m^2.

Answer:

96m squared

Step-by-step explanation:

BxH=Area of parallelogram

12x8=96

Which function is represented by the graph

Answers

b is the answer.

what's in the absolute value lines should be the opposite value of what's on the graph. therefore the one should be positive in the function.

Which system of equations is satisfied by the solution shown in the graph?
9
2 3 4 5 X
-5
-4
3
8
N
6
51
3.

Answers

Answer:

The two equations of each line is

y = x + 10 and y = -x + 5

I am unable to idenfity your option choices due to formating

Step-by-step explanation:

I've attached my work

Hope it helps, let me know if you have any questions/concerns !

Have a nice rest of your day :)

(help much needed)

Answers

Answer:

C

Step-by-step explanation:

Because the input(x) does not repeat more than once

Answer:

A. It is not a function

B. It is not a function

C. It is a function

D. It is a function

Step-by-step explanation:

A relation has an input value which corresponds to an output value. When each input value has one and only one output value, that relation is a function.

Which expression gives the volume of a sphere with radius 15?
WILL MARK BRAINLIEST IF CORRECT!!!

Answers

Answer:

D

Step-by-step explanation:

volume of a sphere is = to

v= 4/3pi(r^3)

please help me i will give brainlyest to anyone who gets it correct!!!

Answers

Answer:

See below

Step-by-step explanation:

3x-429   + x/4 = 130      shows x = 172

QSN = 3x -429 = 87 degrees

HSX = 87 degrees

HSQ = 180 -87 = 93 degrees

XSN = x/4 = 43

PSN = 93 - 43 = 50  

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