help will mark brainliest

Help Will Mark Brainliest

Answers

Answer 1

Answer:

no mistakes

Step-by-step explanation:

There are no mistakes in the derivation of the quadratic formula by completing the square

Step 1

Move c to the right hand side

Step 2 Get x^2 to have a coefficient of 1

Step 3 complete the square by adding ( b/2a) ^2 to each side

Step 4 Write in the completed square form  ( x+ b/2x) ^2 = -c/a + ( b/2a) ^2

Step 5 take the square root of each side, remembering the plus and minus

Step 6 subtract  (b/2a) from each side


Related Questions

Which function is graphed on the right? y = 2x+3 – 2 y = 2x–3 + 2 y = 2x–2 + 3 y = 2x–2 – 3

Answers

Answer:

y=2x-2-3

Step-by-step explanation:

First you will need graphing paper. Go ahead and locate the y intercept on each of these equations. Then locate the slope. (y=mx+b). If the slope is positive count the amount of blocks up the slope's value is. And if negative count down. Then count to the right depending on the denominator. (2/1) You will make a triangle draw the line on the hypotenuse of the triangle. Then you have the line. You can also just use desmos.

The equation of the graphed function is [tex]y = 2^{x-2} + 3[/tex]

What are functions?

Functions are used to represent equation, graphs and tables

The parent function of the graph is an exponential function represented by

[tex]y = 2^x[/tex]

First, the function is shifted 2 units right.

So, we have:

[tex]y = 2^{x - 2}[/tex]

Next, the function is shifted 3 units up.

This is represented as:

[tex]y = 2^{x - 2} + 3[/tex]

Hence, the equation of the graphed function is [tex]y = 2^{x-2} + 3[/tex]

Read more about exponential functions at:

https://brainly.com/question/11464095

Jeffrey estimates there's a 40% chance to eat pizza for dinner, it's 60% chance he'll drink cold out, and it's 30% chance to eat pizza and drink Cola. What's the probability of Jeffrey drinking cola, if he eats Pizza?​

Answers

Answer:

  a.  75%

Step-by-step explanation:

Let "p" represent the probability that Jeffrey will eat pizza, and "c" represent the probability that he will drink cola.

We are given ...

  P(p) = 0.40

  P(p&c) = 0.30

The conditional probability of interest is ...

  P(c|p) = P(p&c)/P(p) = 0.30/0.40 = 0.75

The probability Jeffrey will drink cola, given that he eats pizza, is about 0.75.

How many two-digit primes have both their digits non-prime?

Answers

Answer:

89

Step-by-step explanation:

8 is divisible by 4

And 9 is divisible by 3

Does anyone know the answer ?

Answers

Answer:

3.75

Use the pythogorean theorm for sqrt(6.25^2 - 5^2) = x

B^7 divided b^4 simplified

Answers

Answer:

[tex] = {b}^{3} [/tex]

Step-by-step explanation:

[tex] \: \: \: \: \: \: \: \frac{ {b}^{7} }{ {b}^{4} } \\ = {b}^{7 - 4} \\ = {b}^{3} [/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

tell whether this has one solution, infinitely many solutions, or no solution. Explain your reasoning. y=2x+7, y=3x-1

Answers

Answer:

One solution

Step-by-step explanation:

They have isolated y for you in both equations so you can plug either one into the other.

y = 3x - 1

2x + 7 = 3x - 1

isolate the x

7 = x - 1

x = 8

Go back to the original and plug 8 into x to get y.

y = 2 (8) + 7

y = 16 + 7

y = 23

This means at (8, 23) y = 2x+7 is equal to y = 3x-1. In other words they share a point at (8, 23). This is the only solution because for any other x and y they'd not be equal.


[tex] - \frac{1}{2} x > 4[/tex]

Answers

Answer:

x< -8

Step-by-step explanation:

To solve the inequality, we must get x isolated.

-1/2x>4

We have to perform the inverse operation to both sides. x is being multiplied by -1/2. The inverse of multiplication is division. Divide both sides by -1/2.

-1/2x / -1/2 > 4/ -1/2

When dividing by fraction, you can also multiply by the reciprocal.

To find the reciprocal, flip the numerator and the denominator.

-1/2–> -2/1

-2/1 *-1/2x > 4* -2/1

x> 4* -2/1

When multiplying or dividing by a negative number in an inequality, you must flip the inequality sign.

x < 4* -2/1

x < 4*-2

x< -8

3. A soccer team played 160 games and won 65 percent of them. How many games did the team win?
a. 94
b. 104
c. 114
d. 124

Answers

Answer:

b.) 104

Step-by-step explanation:

Percent formula:

x/y = p/100

where x is the fraction, y is the total, and p is the percent

This means:

x = number of games the team won

y = total number of games

p = percent the number of teams won

Let's plug these values into the equation:

x/y = p/100

x/160 = 65/100

Solve by cross-multiplying:

x/160 = 65/100

100(x) = 100x

160(65) = 10,400‬

100x = 10,400

/100     /100

x = 104

Therefore, the team won 104 games.

Which algebraic expression represents this mathematical statement?
75 less than a number
O A. 75-n
O B. n-75
O C. n: 75
O D. n+ 75​

Answers

Answer:

B

Step-by-step explanation:

Subtraction mean how much less than a number

The perimeter of a pentagon is 20t + 7.
Four sides have the following lengths:
6t, 2t, 4t – 5, and 5t + 1.

Answers

Answer:

3t+11

Step-by-step explanation:

A pentagon has 5 sides

Perimeter is the total measurement around an object=20t+7

we have not been given the 5th side measurement so lets make it x

6t +2t+4t-5+5t+1+x=20t+7

put the liketerm together i e

6t+2t+4t+5t-20t+x=7+5-1

17t-20t+x=11

-3t+x=11

x=11+3t.

So the measurements of the fifth side is 11+3t same as 3t+11

The proof that TriangleMNG ≅ TriangleKJG is shown.


Given: AngleN and AngleJ are right angles; NG ≅ JG

Prove: TriangleMNG ≅ TriangleKJG

What is the missing reason in the proof?


a) the reflexive property

b) ASA

c) AAS

d) the third angle theorem

Answers

Answer:

b) ASA

Step-by-step explanation:

If you were to look at both triangles the marked angles are rothe other same for the side and also the angle of G which connects both triangles together.

The missing reason in the question is option B which is ASA that is ANGLE SIDE ANGLE.

What are congruent triangles?

Triangles are congruent when they have  three corresponding sides and exactly the corresponding  three angles are equal to other.

What are similar triangles?

If two triangles can be superimposed on each other then it is said to be similar triangles.

How to check similarity between triangles?

Two triangles are said to be similar if two angle and a side, one angle and two sides are equal to other.

If we look at the figure we found that both triangles the marked angles are same for the side and also the angle of G which connects both triangles together.

Hence the correct option for the problem is ASA (Angle Side Angle)

Learn more about congruent triangles at https://brainly.com/question/2938476

#SPJ2

What is the value of f(x) = 2.2 for f(-2)?

Answers

here is your ansewewrew

If today is not Thursday then tomorrow is not Wednesday

Answers

Answer:

Not sure what your choices are but.. assuming its finding these,

Inverse: If tomorrow is not Wednesday, then today is not Thursday.

Contrapositive: If Today is not Thursday, then tomorrow is not Wednesday.

Converse: If tomorrow is Wednesday, then today is Thursday. 

Step-by-step explanation:

For a musical show, x children were present. There were 60 more adults than children. An adult paid N5 and a child N2.

If a total of N1294 was

collected, calculate the value

of x *

Answers

Answer:

142

Step-by-step explanation:

5*(x+60)+2*x=1294

5x+5*60+2x=1294

7x+300=1294

-300       -300

        7x=994

x=994:7

x=142

142

Step-by-step explanation:

5(60+x) +2(x) = 1294

300+5x+2x= 1294

7x= 994

X= 142

Help ? What’s the answer ?

Answers

Answer:

D. - i

Step-by-step explanation:

i = √( - 1)

i³ = √( - 1)*√( - 1)*√( - 1) = √(-1)² *√(-1) = - 1*i = - i

can anybody help me on this please I will be giving 15 points..

Answers

Answer:

BC=[tex]\sqrt{95}[/tex]

Angle A (or BAC)=54.31466...

Angle C (or ACB)=35.68533...

Step-by-step explanation:

[tex]\frac{7}{\sin \left(\angle \:ACB\right)}=\frac{12}{\sin \left(90\right)}[/tex]

[tex]BC=\sqrt{12^2-7^2}[/tex]

[tex]\sqrt{12^2-7^2}=\sqrt{95}[/tex]

[tex]\frac{\sqrt{95}}{\sin \left(\angle \:BAC\right)}=\frac{12}{\sin \left(90\right)}\quad :\quad \angle \:BAC=54.31466[/tex]

[tex]\frac{7}{\sin \left(\angle \:ACB\right)}=\frac{12}{\sin \left(90\right)}\quad :\quad \angle \:ACB=35.68533[/tex]

Using the pythagorean theorem

[tex]AC^2=AB^2+BC^2\\BC=\sqrt{AC^2-AB^2}\\BC=\sqrt{12^2-7^2}\\BC=\sqrt{144-49}\\BC=\sqrt{95}[/tex]

[tex]sin A=\frac{BC}{AC}=\frac{\sqrt{95} }{12}\\A = sin^{-1}(\frac{\sqrt{95} }{12})\\A = 54.31[/tex]

[tex]A + C = 90\\C = 90-A\\C= 90- 54.31\\C = 35.69[/tex]

9.3 × 10^{7} - 3.4×10^{6} = ?

Answers

Answer:

8.96 x 10^7

Step-by-step explanation:

9.3 x 10000000 - 3.4 x 1000000 = 93000000-3400000 = 89600000

89600000 can also be written as 8.96 x 10^7

A restaurant used 231 eggs last week. Of these, 46 were brown in color. The remaining eggs were white in color. Which equation can be used to solve for w, the number of white eggs used last week?

Answers

46+w=231

w=185

# brown eggs (46) + # white eggs (w) = total # of eggs (231)

Answer:

231 - 46 = 185

Step-by-step explanation:

We know that the restaurant used 231 eggs last week. (That's a lot!)

That is out starting point. It doesn't change.

Then, it says 46 are brown eggs.

To find the number of white eggs, we know it must equal to 231 when added to the 46 brown eggs. Or, 46 + ? = 231.

So, we do the opposite operation of addition; subtraction.

Like this:

231 eggs - 46 brown = ? white eggs.

That equals 185 white eggs.

Keep up the EGGcellent work! ;)

-Bella,

BrainlyBluebell

Can someone please help me

Answers

Answer:jss needed point srry

Step-by-step explanation:

Can you please help

Answers

Pyramid
B=36
h=4
(36*4)/3=48

Prism
B=144
h=3
V= (bh)= 432

answer= 432+48 =480

The perimeter of an isosceles triangle is 10 ¾ cm . If one of its equal side is 2 ¾ cm ,the third side IS, *

Answers

Answer:

4 cm

Step-by-step explanation:

Given is an isosceles triangle. Therefore it's two sides will have equal lengths.

Let the length remaining sides be x cm.

[tex]x + x + 2 \frac{3}{4} = 10 \frac{3}{4} \\ \\ 2x + \frac{11}{4} = \frac{43}{4} \\ \\ 2x = \frac{43}{4} - \frac{11}{4} \\ \\ 2x = \frac{32}{4} \\ \\ 2x = 8 \\ \\ x = \frac{8}{2} \\ \\ \huge \red{ \boxed{x = 4 \: cm \: }}[/tex]

Please help please :( I will really appreciate it thank you

Answers

Answer:

an Altitude

Step-by-step explanation:

Its altitude indicated by point A to line BC

Answer:

Im pretty sure that would be an altitude

Step-by-step explanation:

Helpppppp meeeee please URGENT
True or False

Answers

Answer:

false

Step-by-step explanation:

you cant have same size without congruent


[tex]x^{2}-5x-24=0[/tex]
Quadratic Formula
Please show every step

Answers

Answer:

[tex]x=8,\:x=-3[/tex]

Step-by-step explanation:

[tex]x^2-5x-24=0\\\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}\\x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\\mathrm{For\:}\quad a=1,\:b=-5,\:c=-24:\quad x_{1,\:2}=\frac{-\left(-5\right)\pm \sqrt{\left(-5\right)^2-4\cdot \:1\left(-24\right)}}{2\cdot \:1}\\\mathrm{The\:solutions\:to\:the\:quadratic\:equation\:are:}\\x=8,\:x=-3[/tex][tex]=\frac{5+\sqrt{\left(-5\right)^2+4\cdot \:1\cdot \:24}}{2\cdot \:1}\\5+\sqrt{\left(-5\right)^2+4\cdot \:1\cdot \:24}\\5+\sqrt{121}\\=\frac{5+\sqrt{121}}{2}\\=\frac{5+11}{2}\\=\frac{16}{2}\\=8\\\frac{-\left(-5\right)-\sqrt{\left(-5\right)^2-4\cdot \:1\cdot \left(-24\right)}}{2\cdot \:1}\\=\frac{5-\sqrt{\left(-5\right)^2+4\cdot \:1\cdot \:24}}{2\cdot \:1}\\5-\sqrt{\left(-5\right)^2+4\cdot \:1\cdot \:24}\\\left(-5\right)^2\\=25\\4\cdot \:1\cdot \:24\\=96\\=5+\sqrt{25+96}\\[/tex]

[tex]\frac{5-\sqrt{121}}{2\cdot \:1}\\\frac{5-11}{2}\\=-\frac{6}{2}\\=-3\\[/tex]

a.
If f(x) = 25 - xand g(x) = 5 - , which is the rule of function (8 + 9)(x)?
-x2 + x+ 20
5 + x
x? - 5x2 - 25x + 125
--X2 - x + 30
b.
C.
d.
Please select the best answer from the choices provided

Answers

Answer:

The answer is D.

Step-by-step explanation:

You have to add both functions together :

[tex]f(x) = 25 - {x}^{2} [/tex]

[tex]g(x) = 5 - x[/tex]

[tex](f + g)(x) = 25 - {x}^{2} + 5 - x[/tex]

[tex](f + g)(x) = 30 - {x}^{2} - x[/tex]

[tex](f + g)(x) = - {x}^{2} - x + 30[/tex]

According to the vertical line test, is the equation x=y^2 a function?

Answers

Answer:

No it is not a function

Step-by-step explanation:

EASY question for y’all mathy people. Easy points! Question in photo!

Answers

Answer:

B 1/7^2

D 7^-10 / 7^-8

Step-by-step explanation:

7^-2

We know that a^-2 = 1/a^2

1/7^2 = 1/49

We also know that anything with a power of 2 in the denominator is good

7^-8 / 7^-10 = 7^2  

7^-10 / 7^-8 = 7^-2 = 1/7^2 = 1/69  that is the second answer

Answer:

Step-by-step explanation:

Answers C and D are correct.  

                                     

Note that in C we have    7^(-8)

                                         ---------- ,  

                                          7^(-10)

which is equivalent to 7^(-8 + 10), or 7^2, or 49.

What number is the arrow point at?

Answers

Answer:

see below

Step-by-step explanation:

The lines in between 2 and 3 are splitting it up into 5ths and because the arrow is pointing to the fourth one the answer is [tex]2\frac{4}{5}[/tex].

What is the volume of a cone if the diameter is 5 and the height is 13?

Answers

Answer:

85.095cm³

Step-by-step explanation:

Volume of cone is ¹/³ πr ²h

volume = ¹/³ x 3.142 x (2.5)² x 13

volume = 85.095cm³

Sean is travelling. He has a flight of 4 hours 20 minutes, a stopover of 35 minutes and then another flight of 3.75 hours. What is his total travel time? Give your answer in hours and minutes.

Answers

3:45 hour flight on the last travel?

Answer:

Th=8[tex]\frac{2}{3}[/tex]h Tmin=520min

Step-by-step explanation:

4h 20min = 13/3h = 260min

35min = 7/12h

3.75h = 15/4h = 225min

Total in min: 225+260+35=520min

Total in h: 520/60=52/6=8[tex]\frac{4}{6}[/tex]=8[tex]\frac{2}{3}[/tex]h

Other Questions
who made english subject Please answer this correctly The amount of pollutants that are found in waterways near large cities is normally distributed with mean 9 ppm and standard deviation 1.5 ppm. 38 randomly selected large cities are studied. Round all answers to 4 decimal places where possible.1. What is the distribution of XX? XX ~ N(,)2. What is the distribution of xx? xx ~ N(,)3. What is the probability that one randomly selected city's waterway will have more than 9.6 ppm pollutants? 4. For the 37 cities, find the probability that the average amount of pollutants is more than 9.6 ppm. 5. For part d), is the assumption that the distribution is normal necessary? YesNo6. Find the IQR for the average of 37 cities.Q1 = ppmQ3 = ppmIQR: ppm Find the percent increase in volume when 1 foot is added to each dimension of the prism. Round your answer to the nearest tenth of a percent. Question 5Choose the correct answer.________connect different ideas in a research paper.A:ThoughtsB:Thesis statementsC:OutlinesD:Transitions A circle centered at the origin contains the point (0, 9). Does (8, StartRoot 17 EndRoot) also lie on the circle? Explain.No, the distance from the center to the point (8, StartRoot 17 EndRoot) is not the same as the radius. No, the radius of 10 units is different from the distance from the center to the point (8, StartRoot 17 EndRoot). Yes, the distance from the origin to the point (8, StartRoot 17 EndRoot) is 9 units. Yes, the distance from the point (0, 9) to the point (8, StartRoot 17 EndRoot) is 9 units. i really need this plz plz will mark bianleastPoint S is translated left 8, down 4.Which is the coordinate pair for the translated point S'?(8, 4)(4, 1)(8, 4)(4, 1) Which contributed to Lincolns fears regarding reelection in 1864? 1) His opponent had been a Union army commander. 2) He had not yet passed the Emancipation Proclamation. 3) More than 65,000 Union soldiers had been killed that summer. 4) Northerners believed he would end the Civil War too quickly. Usage: Please choose the sentence that is CORRECT.Question 11 pointO Annie and her brothers are walking to school.O Annie and her brothers is walking to school.O Annie and her brothers was walking to school,Question 27 pointO Benito don't know the answerO Benito doesn't know the answerO Benito do know the answer.Question 3O The man with all the birds live on my street.The man with all the birds lives on my streetO The man with all the birds been living on my street The colonists and the British fought asa team during the French and IndianWar against whom?A. FrenchB. Other British colonistsC. No one, they fought each otherD. Spanish What is the volume, in cubic in, of a cylinder with a height of 20in and a base radius of 6in, to the nearest tenths place? Which progressive cause was helped by us involvement in world war 1 Question 4 of 102 PointsWhich instrument listed below is an example of a membranophone?O A. Finger cymbalsO B. GuiroO C. MaracasO D. KazooSUBMIT Charles Montesquieu believed that theLegislative Branch should do what?A. Make lawsB. Enforce lawsC. Interpret lawselles sone. All Rights Resed. PLEASE HELP QUICKLY AS POSSIBLE THANK YOU :) The country of Oman is ruled by a monarchy, therefore Oman has which type of government? (2 points) Group of answer choices oligarchy democracy autocracy republic What are orbitals?A. Energy levels occupied by neutronsB. Areas within an energy level that are occupied by electronsC. Regions of the atom that contain protonsD. Circular paths around the nucleus Find (fg)(x) using long division for f(x)=2x312x2+7x27 g(x)=2x2+5 The quotient is The remainder is What roles did African Americans play in the militaryduring WWI? Lee y responde la pregunta. Caballo imaginando a Dios "A pesar de lo que digan, la idea de un cielo habitado por Caballos y presidido por un Dios con figura equina repugna al buen gusto y a la lgica ms elemental, razonaba los otros das el caballo. Todo el mundo sabe -continuaba en su razonamiento- que si los Caballos furamos capaces de imaginar a Dios lo imaginaramos en forma de Jinete." Tomado de: Monterroso, Augusto, Caballo imaginando a Dios. Cul es la funcin del ttulo en el relato?