what is the x for : -2x^2+24x-72=0

Answers

Answer 1

Answer:

x=6

Step-by-step explanation:

Answer 2

Answer:

x = 6

Step-by-step explanation:


Related Questions

please help me on this will give you brainliest

Answers

Answer: 3/4= 15/20, 4/5= 16/20

3/4<4/5

Answer:

15/20    16/20    <

Step-by-step explanation:

First, make a common denominator for both, which is 20. So, 3/4 = 15/20. Then 4/5= 16/20. 15/20 < 16/20, so 3/4 < 4/5.

Laura collects nickels and dimes she has a total of 47 nickels and dimes she calculated the value of the coins and found out she has $4.05 how many nickels and dimes does laura

Answers

Answer:

Number of dimes = 34

Number of nickels = 13

Step-by-step explanation:

Total number of coins = 47

Coins are in the form of nickels and dimes.

Value of a nickel = 5 cents

Value of a dime = 10 cents

Total value of coins = $4.05 or 405 cents

To find:

Number of nickels and dimes?

Solution:

Let number of nickels = [tex]x[/tex]

Money value of nickels = 5[tex]x[/tex]

Let number of dimes = [tex]y[/tex]

Money value of dimes = 10[tex]y[/tex]

Total value of coins = [tex]5x+10y[/tex]

This value is given as equal as 405.

As per question statement, the equations can be written as:

[tex]5x+10y = 405 ..... (1)\\x+ y = 47 ...... (2)[/tex]

Multiplying equation (2) with 5 and subtracting from equation (1):

[tex]10y - 5y = 405 - 235 \\\Rightarrow 5y = 170\\\Rightarrow y = 34[/tex]

Number of dimes = 34

Number of nickels  = 47 - 34 = 13

What is the decimal equivalent of 1/5?

Answers

Answer:

.2

Step-by-step explanation:

Answer:

.20

Step-by-step explanation:

1 divided by 5 is .20

What is the constant proportionality in the equation y=5x

Answers

Answer: General equation of direct variation: y = kx, where k is the constant of proportionality. y = 5x, so 5 is the constant of proportionality

Step-by-step explanation: Hope this helps

negitive 1/5 n +7=2 solve quick first to get mark brainlest

Answers

Step-by-step answer:

-1/5n+7=2

-1/5n+7-7=2-7

-1/5n=-5

-1/5n/-1/5=-5/-1/5

n=25

Can someone plz help .quick!!! Plz I beg u

Answers

Answer:

its number 2

Step-by-step explanation:

The perimeter of a rectangular field is 292 yards. If the width of the field is 63 yards, what is its length?

Answers

Answer:

83

Step-by-step explanation:

do the math

Answer:

83

Step-by-step explanation:

Solution:

63 + 63 = 126

292 - 126 = 166

166 ÷ 2 = 83

Answer: 83

PLEASE HELP!! If you can show your work. I wanna know how you solved it. :)
Daniel has 47 coins. Some are nickels and some are dimes. He has 5 more nickels than dimes. How many
nickels does he have?
Equation 1:
Equation 2:
# of nickels:

Answers

Answer:

:) i have no idea have a good day hope u get it

Step-by-step explanation:

Arnie scored 34 points in 16 soccer games. Maria scored 18 points in 15 soccer games. Who scored more points per game?

Answers

Answer:

Arnie

Step-by-step explanation:

Arnie : 34 ÷ 16 = 2.2

Maria : 18÷ 15= 1.2

B. The school prom committee sold presale tickets for
$18 each. Couples that showed up on the day of the
dance has to pay $24 each. There were 334 tickets
that were sold and the committee made $7320. How
many students purchased tickets at the dance?

Answers

Answer:

218 students purchased tickets at the dance.

Step-by-step explanation:

Let,

x be the number of presale tickets

y be the number of tickets sold at the dance

According to given statement;

x+y=334      Eqn 1

18x+24y=7320    Eqn 2

Multiplying Eqn 1 by 18

18(x+y=334)

18x+18y=6012      Eqn 3

Subtracting Eqn 3 from Eqn 2

(18x+24y)-(18x+18y)=7320-6012

18x+24y-18x-18y=1308

6y=1308

[tex]\frac{6y}{6}=\frac{1308}{6}\\y=218[/tex]

Therefore,

218 students purchased tickets at the dance.

what's the value of (-8)(2/3)

Answers

Answer:

-5.3

Step-by-step explanation:

I'm not really sure if thats the answer but i try

Answer:

5.33333333333

out of these numbers which of them differ by 46. 29,17,38,71,35,63,24

Answers

Answer:

71

Step-by-step explanation:

Add 46 to each number, see if the sum is in the list. In the set of 7 numbers listed, two of them are even (24 and 38), and the other 5 numbers are odd

71

We do not need to look at all differences.

We need to find two numbers fairly far appart,

and not all look promising.

You could look at approximate differences,

or you could look at the last digit.

71-35 and 63-17 are the only promising differences,

because 71 and 63 are the only numbers large enough to be 46 more than another number in that list,

and when you calculate the last digit you calculate

11-5=6 and 13-7=6.

71-35=36

Question: which points are reflections of each other across both axes?

Answers

Answer: I think your answer would be A. (-2,8) and (2,-8)

I hope it's right

Twice a number increased by seven is equal to five. Which of the following represents the equation and solution for this statement?

2 n + 7 = 5; n = -4.5
2 n = 7 + 5; n = 6
2 n + 7 = 5; n = -1
2( n + 7) = 5; n = -4.5

Answers

Hey there!

The answer to your question is the third option: 2n + 7 = 5; n = -1

"twice a number increased by 7" would represent 2n + 7, and if it's equal to 5, it would be 2n + 7 = 5. That rules out the last option, and the second option. Now, we have to solve for "n":

2n + 7 = 5         Step 1: Write the equation.

     2n = -2        Step 2: Subtract 7 from both sides.

       n = -1         Step 3: Divide both sides by 2.

Therefore, "n" is equal to -1, and the third option would be correct.

Hope it helps! Have a great day, and good luck on your assignment!

Answer:

Step-by-step explanation:

The answer to your question is the third option: 2n + 7 = 5; n = -1

"twice a number increased by 7" would represent 2n + 7, and if it's equal to 5, it would be 2n + 7 = 5. That rules out the last option, and the second option. Now, we have to solve for "n":

2n + 7 = 5         Step 1: Write the equation.

    2n = -2        Step 2: Subtract 7 from both sides.

      n = -1         Step 3: Divide both sides by 2.

Therefore, "n" is equal to -1, and the third option would be correct.

Ten gallons of a 25% salt solution are to be obtained by mixing solutions that are 13% salt and 33% salt
respectively. How many gallons of each are needed?

Answers

Answer:

salt + salt = salt

0.13x +3.3-0.33x =2.5

-0.20x=-0.8

x= 4 gallons (amt of 13% solution to be mixed)

10-x= 6 gallons (amt of 33% solution to be mixed)

-----------

Cheers,

Stan H.

Step-by-step explanation:

The scatterplot below shows the number of hours that some high school students spend on working and on video games.
A graph title Working and Video games has weekly working hours on the x-axis and weekly hours of video games on the y-axis. Points are grouped together and decrease.

Which statement about the scatterplot is true?
In general, the number of hours spent working does not affect the number of hours spent on video games.
In general, the amount of weekly time spent working is equal to the amount of weekly time spent on video games.
As the amount of time spent working increases, the amount of time spent on video games increases.
As the number of hours spent working increases, the amount of time spent on video games decreases.

Answers

Answer:

D

Step-by-step explanation:

I got it right on edg 2020

Answer:

d

Step-by-step explanation:

PLEASE HELP!!! What is the domain and range based on the pic below?

Answers

Answer: domain:4444

Range: -6, -4, -2, 0

Step-by-step explanation:

X is always the domain, and y is the range

question 15, i’m sick and i only have until 12am to finish all my missing work and i need to pass to make my parents happy but i’m lowkey sad rn but #swag

Answers

Answer:

-3(x+2)-x

-3-2x

Step-by-step explanation:

Answer:

-3-2x

Step-by-step explanation:

PLEASE HELP FAST...WILL MARK AS BRAINLIEST IF GIVEN GOOD ANSWER
3. What is the length of segment AB? Show or explain how you know. ​

Answers

Answers

I got answer 16.9

Step-by-step explanation:

1. Let's first look at triangle XYC. We know angle Y is 90 degrees because it has the symbol. and it is given that Angle X 45 degrees. Using the triangle interior angle theoreom, a triangle has 180 degrees so Angle C is 45 degrees. Know let find the sides, First we can deduce XY is 5 cm because of the triangle midsegment theorem XY is half of BC so since we know BC is 10  that means XY is 5.  Then applying 45-45-90 triangle rules, XY=5, YC=5 and XC=[tex]5\sqrt{2}[/tex].

2.Now let look at the triangle XBC. Let find one  missing angles. In the triangle . A  angle bisector  XC bisects XY and BC  . Using that information Angle C of XYC = Angle C of XBC. So angle C=45 degrees. Knowing looking at the main triangle ABC  Angle A=30, Angle C= 45+45=90 and Angle B=60 by interior triangle theorem. So going back to Angle X so angle x is 75 degrees due to interior triangle theorm. Also since Y=90 degrees it forms a linear pair to triangle AXY so Y=90 for AXY

Now let apply 30-60-90 triangle rules to AXY. XY =5, AY=[tex]5\sqrt{3}[/tex] and AX=10.  

Finally. Apply 30-60-90 triangle rules to ABC. AC=[tex]5\sqrt{3}[/tex] +5 BC=10 and AB should turrn out to be 16.9.

This may not be right,but good luck:)

A student tried to solve the following equation but made a mistake.



Step 1: 4 – 8x = -28

Step 2: -8x = -24

Step 3: x = 3



What mistake did the student make?

Answers

9514 1404 393

Answer:

  in Step 2, the student added 4 on the right and subtracted 4 on the left

Step-by-step explanation:

In Step 2, the student subtracted 4 on the left side of the equation, but incorrectly added 4 on the right. (The same operation needs to be performed on both sides of the equation.) The correct step 2 would be ...

  -8x = -32 . . . . correct step 2

  x = 4 . . . . . correct step 3

Classify each triangle by it angle and by its sides plz help me out

Answers

Answer:

scalene, acute

Step-by-step explanation:

plzz help mee e

A motor home starts across a lake. The lake is 7 miles long and it takes 0.5 hours to get across. What is the speed? Write a formulae and show a label.

The monthly texting plan of All Star Cell is $11 per month and $0.25 per text. The monthly texting plan of Top Line Cell is $14 per month and $0.15 per text. A student wants to set up a system of equations to find the number of texts for which the total monthly cost of the two companies is the same. He uses the variables x and y. He lets y represent the total monthly cost. What will x represent? x = number of texts x = cost of the total number of texts x = total monthly cost x = cost of each text

Answers

Answer:

Your answer is A. x = number of texts

Step-by-step explanation:

I took the quiz, it's correct

Good luck

Answer:

Your answer is A. x = number of texts

Step-by-step explanation:

Have a great day!

please help i shall give brainliest

Answers

Answer:

I think the answer is d

Step-by-step explanation:

..........................................................

Tyson works 34 hours each week at $20.39 per hour.
Tyson has 29.51% taken out for taxes and withholdings,
What is the net pay per year?
A $488.68
B. $10,638.21
C. $204.58
D. $25,411.31

Answers

Answer:

34 X 20.39 = 693.26

693.26 X 52 = 36049.52

100-29.51 = 70.49

36049.52/100 X 70.49 = 25411.306648

monetary value rounded 2dp = $25411.31

answer is D

can someone please help it says :
For each of the 6 pairs of triangles below, determine if the triangles can be proved congruent. If yes, tell which of the patterns it fits (SSS, SAS, ASA, or AAS)

Answers

Answer:

a. is congruent by SSS

b. is congruent by AAS

c. is congruent by ASA

d. is congruent by SAS

Step-by-step explanation:

a. is SSS because all sides are marked

b. is AAS because the point where the two triangles meet are vertical angles and the one side of the triangle is marked congruent making AAS

c. is ASA because the angles are on segment FG and segment BC and there is a congruent line in between the two angles making ASA

d. is SAS because the triangles share the segment QS and when two triangles share a segment, that segment is congruent. the outside segment is congruent and then there is an angle and then the inside segment is congruent

What happens when you change the y-intercept in an equation?

Answers

You get a different answer

Answer:

changed

Step-by-step explanation:

going upbjvfvd

What is the perimeter of this figure?

Answers

Answer:

6+2+3+3+3+5=22 is a correct answer

If the following ratios are proportional, what is the missing quantity? 10.2/3 ; 17/5; _____/11; 57.8/17

Answers

Answer:

37.4

Step-by-step explanation:

Use one of ratios to find the missing quantity:

17/5 = x/11

Cross-multiply:

5x = 17*11x = 17*11/5x = 37.4

Two brothers, Paul and Julio, left the schoolyard and decided to have a very long footrace. Julio started running at exactly 4:00pm, and ran at a pace of 300 meters per minute. Paul started running at exactly 4:10pm and ran at a pace of 420 meters per minute. Write two equations where y = distance covered and x = the number of minutes after 4:00pm to represent Paul’s and Julio’s journey

Answers

Answer:

this is eassy

Step-by-step explanation:

Divide € 165 into the ratio 1:2:12

Answers

Answer:

11 : 22 : 132

Step-by-step explanation:

1 + 2 + 12 = 15

165 ÷ 15 = 11

1 × 11 = 11

2 × 11 = 22

12 × 11 = 132

11 : 22 : 132

Other Questions
One result of the War of 1812 was _________.a. that settlers stopped taking Native Americans' land.b. British ships impressed US sailors to serve in the British navy.c. there was a sense of national pride and a desire to expand the borders.d. the US economy weakened even more than it had. AGAIN A coin has heads on one side and tails on the other. The coin is tossed 12 times and lands heads up 4 times. Which best describes what happens when the number of trials increases significantly? A. The observed frequency of landing heads up gets closer to the expected frequency based on the probability of the coin landing heads up. B. The observed frequency of landing heads up will always be 1/3 of the number of tosses. C. The expected frequency based on the probability of the coin landing heads up gets closer. D. The expected frequency based on the probability of the coin landing heads up gets closer to the observed frequency. Which best describes the figure that is represented by the following coordinates?A(-4, 3), B (2,3), (3, -1) and D(-5, -1)a rhombusa parallelograma trapezoida rectangle Was industrialization worth it? Why or why not? Best answer get's brainliest Today, people from all over the world can _____.remain culturally isolatedlimit cultural diffusioncommunicate quickly and easilyinfluence government decision making (My Lucy Friend Who Smells Like Corn)How does the narrator feel about Lucy? Esteban y yo (ser) muy deportistas depequeos, pero ahora, no.Preterite or imperfect? can someone help me with Spanish, please Fill in the blanks with the correct possessive adjectives in Spanish._____ hermano tiene cinco aos y ______ escuela es grande. ______ escuela el diferente, es peque;a.Su; mi; MiMi; su; MiMi; su; Su Which orbital notation represents the second principal energy level of a silicon atom in the ground state? Evaluate the extent to which religious belief shaped societies before 1200 CE ent: Mastery TestSelect the correct answer.This tectonic plate pushes against the Eurasian plate to form the Alps and other geographical features.OA.North American.Arabian.PacificODAfricanResetNext paper costs $ 40 for 10 teams how much for 1 ream? i need help with this Which of the following is a short-term effect of alcohol use?A.confusionB.cirrhosisC.blindnessD.tremors Who do most mostern historians think was responsible for the war? Which is an example of inventing race?A. Using a person's color to determine how he or she is treatedB. Allowing white servants to have more privileges than blackservantsC. Putting white servants in charge of African work crewsO D. All of the above -11x - 7y=-56 what is the slope and y intercept What mood is created in this excerpt from Dracula by Bram Stoker? HELP Ill mark as Brainliest!!! Fill in the blank with the indirect object pronoun Question 1A mi_____gusta comer las papas fritas.