A student performed the following steps to find the solution to the equation
x2 - 2x - 8 = 0. Where did the student go wrong?
Step 1. Factor the polynomial into (x-4) and (x - 2)
Step 2. X-4 = 0 and x - 2 = 0
Step 3. x = 4 and x = 2
A. The student did not make any mistakes, the solution is correct
B. in Step 2
C. in Step 1
D. in Step 3


Answers

Answer 1

Answer:

step 1, c

Step-by-step explanation:

he was wrong in step 1.

when factoring out (x-4) and (x-2), you have to distribute x*x, x*-2, -4*x, and -4*-2

if you do it you get x^2 - 2x -4x + 8

the correct way to factor will be (x-4)(x+2)

when you factor out you will get the original equation you started with.


Related Questions

If you want to divide 4 by 2/5 you can multiply 4 by 5, then divide it by 2 or multiply it by 1/2.

Answers

Step-by-step explanation:

to divide by a fraction is the same as to multiply by the upside-down fraction.

in your example

4 / 2/5 = 4 × 5/2 = 20/2 = 10

by the way, also a whole number is a fraction.

4 = 4/1

so, fully formal, the whole operation above looks like

(4/1) / (2/5) = (4/1) × (5/2) = (4×5) / (1×2) = 20/2 = 10/1 = 10

The price of a sweater was reduced from $25 to &19. By what percentage was the sweater reduced by?

Answers

Answer:

24%

Step-by-step explanation:

Difference in price of sweater

=$25-$19

=$6

6/25×100%=24%

If you plotted the points in the table and connected
them in order with a smooth curve, what shape
would it be?
a line
a U shape
a semicircle

Answers

Answer:

U shaped.

Step-by-step explanation:

When x = 0 , f(x) = 6

when x =1 yf(x) = 0

when x = 2 f(x) = -2

x = 3 f(x) = 0

x = 4 f(x) = 6.

So the graphs falls from the left and rises to the right in the form of a U.

You can draw a rough graph to confirm this.

Answer:

u Shaped

Step-by-step explanation:

i just passed my math test that i had no idea how to do :)

i just felt the need to share that for some reason

have a good day/night/afternoon ^^

Answers

As long as you believe in yourself, you can do anything.

Answer:

brruhhh

Step-by-step explanation:

1. How has the cost of a movie ticket changed over the last 30 years? What has been the general trend? How can you tell this from the graph? (2 points)
2. What years did the cost of movie ticket decrease compared to the year before? How can you tell from the graph when the price is decreasing? (2 points)

Student Name:
Predicting Movie Ticket Costs Activity
3. There was a time where the cost of a movie ticket stayed relatively the same over several years. For what years did the cost stay relatively the same? How can you tell this from the graph? (2 points)
4. The graph could be divided up into three different periods of relatively consistent ticket price change: The years 1980 – 1988, 1989 – 1993 and 1994 – 2011. Can you find a typical rate of change in the price of a ticket for each of these time periods? In other words, on average, by how much did the price of a ticket increase by each year during each of these time periods? (2 points)
5. Predict the cost of a ticket in 2012 – 2015. Plot your predictions and give your actual predictions for each year below. How did you determine how much a ticket would cost each year? (2 points)
6. What might have been the cost of a ticket during the years 1975 – 1979? Plot your estimates on the grid and give your actual predictions for each year below. How did you determine how much a ticket would cost each year? (2 points)

Student Name:
Predicting Movie Ticket Costs Activity
7. Find a line of best fit to represent the data. Let y = ticket price and x = the number of years since 1980 (1980 is year zero, 1981 is year one). Approximate a line to represent the data, a slope, a y- intercept and equation that models your line of best fit. (2 points)
8. Use your equation (or graph or a table) to predict the cost of a movie ticket in the years 2020 and 2030. Be sure to show how you came to each answer. (2 points)

Answers

Answer:  

1. For most of the 1990s, tickets sold for an average of less than $5 apiece, and dating back to the 1960s, many Americans could go to the movies for less than a buck. 24/7 Wall St. reviewed data from the National Association of Theatre Owners to determine the cost of a movie ticket the year you were born. A full-price AMC ticket is averages $10.50 nationwide, reflecting a 50-cent increase. Concession prices also increased.

Your asking alot for 50 points so i did 1..

Step-by-step explanation:

Find the value of X. Round the length to the nearest tenth.
A. 9.0 yd
B. 31.2 yd
C. 10.4 yd
D. 15.6 yd

Answers

Answer:

C. 10.4 yd

Cause why not?

180
9. What is the value of x below?
A.
B.
1362
C.
D.
→ K
g
136
90
54
t

Answers

Answer:

icifzuez8t

Step-by-step explanation:

f8x8s3w557t6jeflfrjj5xg

z4usti

jayo4i

zirstodtpd

dry

fumc

A hot air balloon rose between 1 and 1 feet each second. Which is the best
estimate for the altitude of the balloon after 26 seconds?
[A] 65 feet
[B] 20 feet
[C] 55 feet
[D] 40 feet

Answers

Answer:

i think the best estimate is answer b

Step-by-step explanation:

if everything in a store is 20% off and the discounted price of an item is $18.00 what is the regular price?

Answers

Answer:

14.4 dollars

Step-by-step explanation:

If you buy an item at $18 dollars with a 20% discount, you will pay 18 - 3.6 = 14.4 dollars

which expression is equivalent to the given expression after using the distributive property? 9 + 5 + 7x² + 3x²y + 2x²​

Answers

Answer:

9 and 5 I guess enjoy.

.

Step-by-step explanation:

and yeah no explanation

Translate the blue shape to the pink shape...

help me quick please

Answers

Answer:

I can't help you if there's no picture lol

Find the slope of the line that goes through the given points. (-2,-2) and (0,2)

Answers

Answer:

y=mx+b

Step-by-step explanation:

follow this equation

what is the converse of "If you know Spanish, you can join the Foreign Language Club."

Answers

Answer:

If you can join the foreign language club then you know spanish.

Giving me brainlest or sth will be appreciated

Find the products in simplest form.
8 5
21 16
23. 15 =
RETRY

Answers

Answer:

part A

[tex] \frac{8}{21} . \: \frac{5}{16} \\ \\ \frac{5}{42} \\ \\ 0.119[/tex]

part B

[tex] \frac{12}{25} . \: \frac{15}{16} \\ \\ \frac{9}{20} \\ \\ 0.45[/tex]

Answer:

8/21 . 5/16 = 5/42

12/25 . 15/16 = 9/20

Step-by-step explanation:

16 = 2 x 8

8/21 . 5/16

= ( 8 x 5 ) / ( 21 x 16 )

= ( 8 x 5 ) / ( 21 x 2 x 8 )

= 5 / ( 21 x 2 )

= 5/42

12 = 3 x 4

15 = 3 x 5

25 = 5 x 5

16 = 4 x 4

12/25 . 15/16

= ( 3 x 4 ) / ( 5 x 5 ) . ( 3 x 5 ) / ( 4 x 4 )

= ( 3 x 4 x 3 x 5 ) / ( 5 x 5 x 4 x 4 )

= ( 3 x 3 ) / ( 5 x 4 )

= 9/20

(Inscribed Angles)
Find m∠N.

Answers

Answer:

x=9 y=3

Step-by-step explanation:

because 5x+9=6x and 6y-1=3y+8

x=9 y=3

branlist please

Best answer gets brainliest!

Whats the question?

The answer: Shreks Smelly Armpits

Whats the question?

Answers

Answer:Shreks smelly armpit

Step-by-step explanation:cause you wrote it??

Answer:

Shreks Smelly Armpits

Step-by-step explanation:

Question:

The Land of Duloc is having a smell test with the smeliest armpits to win. Donkeys armpits have a 7/98 stink level. Shrek has x14 smelleier armpits than donkey. Lord Farquade has the same smell level as shrek but x0. Whos armpit is the smelliest?

Solve:

Donkey: 7/98 SECOND PLACE

Shrek 7 x 14 = 98 = 98/98 FIRST PLACE

Lord Farquade: 98 x 0 = 0 THIRD PLACE

Answer: Shreks Smelly Armpits

a contractor is given a scale drawing of a rectangular patio. the scale from the patio to the drawing is 4 feet to 1 inch. what is the area of the actual patio?

Answers

Dddfddffrrff fr Rex free f. Fc

Use the Pythagorean Theorem to find the distance between the point (1,4) and (-5,-4) on the coordinate plane? (FREE RESPONSE)
no pic ANSWER IT

Answers

Answer:

12?

Step-by-step explanation:

Answer:The Answer is 10!!!

Step-by-step explanation:

If you plot (1,4) and (-5,-4) on a graph, you can see that you can form a right triangle.

you would count the values on the X-axis and on the Y-axis. The values are 6 and 8 respectively.

You put the values on the second power and add them. So the equation would be 6^2 + 8^2. The answer would be 100.  Because the Pythagorean Theorem is a^2 + b^2= c^2, you would square root would be 10. The distance between the two points is 10.

HELP! NOW!
During a sale at a store, sweaters are being sold at a 65% discount. Let x represent the discount on sweaters. The shirts have the same discount as the sweaters. Let y represent the discount on shirts. The pants do not have the same discount as sweaters. Let z represent the discount on pants. Which statement is true? A. x ≠ y B. x = y C. z = x D. y = z

Answers

Answer:

B. x = y

Step-by-step explanation:

Since sweaters discount (x) and shirt discount (y) are the same like we are told, then they are equal.

If you can help please do! Thank you!

Answers

Answer:

see explanation

Step-by-step explanation:

The diagonals of a parallelogram bisect each other , then

CO = OA = b

DO = OB = a

(a)

CA = CO + OA = b + b = 2b

(b)

DC = DO + OC = a - b

(c)

CB = CO + OB = b + a = a + b

A store is having a sale where all shoes are discounted by 25%. Diego has a coupon for $2 off of the regular price for one pair of shoes. The store first applies the coupon and then takes 25% off of the reduced price. If Diego pays $24.38 for a pair of shoes, what was the original price before the sale and without the coupon?



H e l p

Answers

Answer:

28.47

Step-by-step explanation:

Find the y intercept for the equation of the line that passes through point (-1 , 5)if the slope is 5

Answers

Answer:

the y-intercept is 10

Step-by-step explanation:

What is the fraction form of the following decimal expansion?

Answers

Answer: B

Step-by-step explanation:

4/s-3 + s/2 = -2
Need help please​

Answers

Step-by-step explanation:

Given equation is 4/(s-3) + (s/2) = -2

=> [(4×2)+s(s-3)]/2(s-3) = -2

=> (8+s²-3s)/(2s-6) = -2

=> 8+s²-3s = -2(2s-6)

=> 8+s²-3s = -4s+12

=> s²-3s+8+4s-12 = 0

=> s²+s-4 = 0

The standard form is s²+s-4 = 0

angles a and b in both angles sets are ?

Answers

Answer:

1) b = 60°

2) a = 90°, b = 90°

Step-by-step explanation:

1) Angles on a straight line add to 180° so 180 - 120 is 60°

2) The two lines are perpendicular (meet at right angles) so both angles are 90°

Hope this helps!

Tara can type 180 words in 4 minutes at this rate how many words can she type in 10 minutes

Answers

Answer:

450 words at a rate of 45 word per minute

Step-by-step explanation:

180 divided by 4 equals 45

times 10 equals 450

Answer:

450 words in 10 minutes

Step-by-step explanation:

To set this up you need to put it like this:

[tex]\frac{180}{4} =\frac{x}{10}[/tex]

From here, you need to cross multiply, which will get you to: 180(10) = 4x

Multiply 180 and 10: 1,800

The equation will now be: 1,800 = 4x

Now, divide both sides by 4:   450 = x

HELP PLEASEEEE!!!

Which of the following inequalities matches the graph? у 10 8. दा 4 x 2. 6 8 10 --10-8-6-4-2 -2 - -8 -10 | OX-7 Oxs-7 Oy=-7 Oyz-7

Answers

Answer:

45

Step-by-step explanation:

The graph given is of inequality x ≤ -7.

What is an inequality?

In Algebra, inequality is a mathematical statement that shows the relation between two expressions using the inequality symbol.

Given is a graph of an inequality, we need to determine the inequality,

So, the graph is cutting the x-axis at -7 and all the numbers less than -7 is covered by the graph,

so the inequality will be x ≤ -7

Hence, the graph given is of inequality x ≤ -7.

Learn more about inequality, click;

https://brainly.com/question/30231190

#SPJ5

10 greater than less than, or equal to 5? Explain ​

Answers

Answer:

greater than because 10 is further to the right on a numberline than 5

Step-by-step explanation:

Given: WX congruent yz
Prove: WYXZ

Answers

 Answer:

    Segment Addition

Step-by-step explanation:

1. WX ≅ YZ                            Given

2. XY = XY                             Reflexive

3. WX + XY ≅  YZ + YZ       Addition

4.  WY ≅ XZ                         Substitution/ Segment addition

PLEASE HELP ME I REALLY NEED ITTT

Answers

Answer:

bru you have a head

Step-by-step explanation:

use ittt

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