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

Answer 1

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


Related Questions

HELP ASAP PLEASE !!!!!!!!!!! and please don’t answer unless you genuinely know you’re right or close to being right. i don’t understand this stuff at all so i’m not gonna know if you’re answer was made up or not.

Answers

Answer:

S(x) = x⁴ + 2x³ + 15

Step-by-step explanation:

The function S(x) has shifted up (vertical translation) by 10 units as seen on the graph

The transformation rule is:

S(x) → S(x) + 10

Therefore new equation is:

S(x) = x⁴ + 2x³ + 15

A salesperson at a jewelry store earns 8% commission each week. Last week,Heidi sold $640 worth of jewelry. How much did the jewelry store make from her sales?

Answers

Answer:

19.2 your welcome my guy

Step-by-step explanation:

im smart

13 x 2.5 in area model

Answers

Answer:

answer is 32.5

Step-by-step explanation:

please follow me

zoe walked 20 miles. the next day she walked 16 miles. what is the percent of the decrease of zoes walking? I WILL GIVE BRAINLIST! SHOW WORK!!

Answers

Uh 4 maybeeeeeeeeeeeeeeeeee

X+ 1
If g(x) =
x-2 and h(x) = 4 – X, what is the value of (905)(-3)?

Answers

Answer:

Wait can you explain it better?

Step-by-step explanation:

1. Compare the strengths and weaknesses of the horizontal and vertical methods for adding and subtracting polynomials. Include common errors to watch out for when using each of these methods.
2. Explain why you cannot use algebra tiles to model the multiplication of a linear polynomial by a quadratic polynomial. As an added challenge, develop a model similar to algebra tiles that will allow you to show this multiplication. Describe an example of your model for the product (x + 1)(x2 + 2x + 2). 3. Imagine that you are teaching a new student how to multiply polynomials. Explain how multiplying polynomials is similar to multiplying integers. Then describe the key differences between the two. 4. If you multiply a binomial by a binomial, how many terms are in the product (before combining like terms)? What about multiplying a monomial by a trinomial? Two trinomials? Write a statement about how many terms you will get when you multiply a polynomial with m terms by a polynomial with n terms. Give an explanation to support your statement.

Answers

1.Each method works differently the angles inside them is what matters.

2. Manipulating algebra tiles can help people solve linear equations

3.Distribute each term of the first polynomial to every term of the second polynomial. Remember that when you multiply two terms together you must multiply the coefficient (numbers) and add the exponents. But with Integers you multiply two integers with different signs

4.So you know how

A monomial is a number, a variable or a product of a number and a variable.

multiply each term in one polynomial by each term in the other polynomial

The scatter plot shows the height x (in inches) and the weight y (in pounds) of 10 people. Find the weight of the person who is 63 inches tall. Then find the height of the person who weighs 135 pounds.

PLEASE HELP QUICK!!!!

Answers

Given:

Scatter plot shows the height x (in inches) and the weight y (in pounds) of 10 people.

To find:

The weight of the person who is 63 inches tall. Then find the height of the person who weighs 135 pounds.

Solution:

In the given scatter plot,

x = height (in inches)

y = weight (in pounds)

First we need to find the weight of the person who is 63 inches tall.

If height of a person is 63 inches, then x = 63.

From the given graph, it is clear that y = 110 at x = 63.

Therefore, the weight of the person who is 63 inches tall is 110 pounds.

Now, we need to find the height of the person who weighs 135 pounds.

If weight of a person is 135 pounds, then y = 135.

From the given graph, it is clear that x = 66 at y = 135.

Therefore, the height of the person who weighs 135 pounds is 66 inches.

Help me please -no wrong answer = no Brainy, right answer = Brainiest

Answers

Answer:

1 and 39/40

Step-by-step explanation:

Is east just add

Write an equation in slope-intercept form of the line that passes through (2,-2) and slope of -4

Answers

Answer:

         y = - 4x + 6          

Step-by-step explanation:

Starting with the point-slope form of the equation {y - y₀ = m(x - x₀), where (x₀, y₀) is any point the line passes through and m is the slope}:

m = -4

(2, -2)    ⇒   x₀ = 2,  y₀ = -2

So, the point-slope form of the equation:

y + 2 = -4(x - 2)

Therefore:

y + 2 =  - 4x + 8         {subtract 2 from both sides}

y = - 4x + 6             ←  the slope-intercept form of the equation

WILL GIVE BRAINLIEST IF CORRECT
The value of x that makes lines a and b parallel is

Answers

Answer:104

Step-by-step explanation:

104+75=180

what is the answer
-48>6x =

Answers

if you solve for x the answer is x<-8

Answer:  x =8

Step-by-step explanation:

Skyler purchases 900 baseball cards for $60. Which statement describes a unit rate for his purchase? (choose all answers that apply)

Question 5 options:

15 baseball cards$1

$690 baseball cards

$0.071 baseball card

900 baseball cards$60

Answers

Answer:

A

Step-by-step explanation:

Help me please



Thanks

Answers

Answer:
D

Explanation:

Ramona has been approved for a 20-year, $200,000 mortgage at an annual interest rate of 3.7% compounded monthly Calculate the monthly payment on the loan.​

Answers

Answer:

this other guy is wrong ^^^^^^^^^

it's

2432.35

Step-by-step explanation:

Simplify this expression 2x^4 x x^3​

Answers

Answer:

2x^7

Step-by-step explanation:

Multiply  

x ^4  by  x ^3  by adding the exponents.

Answer:

personally i think its 3x^7

Step-by-step explanation:

you add the powers to get 7

you add the x's to get 3

then you combine the answers

Wayne owns a dairy farm. Yesterday, his cows produced 503 pints of milk. While he processed the milk, he lost 15 pints. How many 4-pint containers can Wayne make with the milk that is left? A. 488 B. 122 C. 118 D. 484

Answers

9514 1404 393

Answer:

  B.  122

Step-by-step explanation:

Wayne will have 503 -15 = 488 pints left. Putting 4 pints in each container, he can fill 488/4 = 122 containers.

SOMEONE DO 7,8, AND 9. ILL GIVE BRAINLIEST

Answers

Answer:

7)8:45

8)12:30

9)3:15

Step-by-step explanation:

thanks, please mark brainliest

Answer:

7 is 9:43 8 6:03 9 i couldn't see that good so 3:17

Step-by-step explanation:

Jermaine and Josh observed an anthill for their science project. They observed that an ant moved 45.0 millimeters (mm) in 85.0 seconds (s). How fast was the ant moving?

Answers

0.529 millimeters per second

Answer:

Velocity =displacement/time

Distance covered is 45mm which is 0.045m or 0.45cm but the displacement is very small so use mm instead. Time taken (t) to cover the distance is 85s. V=45/85

V=0.53mm/s

Step-by-step explanation:

There are 4 marbles and 8 blue marbles in a bag. Mark draws a blue marble out of the bag and does not replace it. What is the probability that the next marble will also be blue​

Answers

Answer:

P(blue)=7/11

Step-by-step explanation:

Determine the GCF of the coefficients.
This is the ____ integer that divides into each coefficient.
(A) greatest
(B) least

Determine the GCF of the variable parts.
For each variable common to all the terms, choose the power of the variable with the __ exponent.
(A) greatest
(B) least

Answers

A is correct = greatest.

3. The regular price of boots at shoe carnival are $ 104. The boot are on Clearance for 30% off and then a customer uses a 20% off coupon after that. What is the final cost of the boots?

Answers

Answer:

$52.00

Step-by-step explanation:

50% of $104.00 = $52.00

Point A is at (3, 2.6) and point B is at (3, 1.4) on a coordinate grid. The distance between the two points is ____. Input numbers and decimal point only, such as 5.8

Answers

Answer:

ITS 1.2 JUST MAKE A GRIS IN YOUR NOTE BOOK

Step-by-step explanation:

zoe walked 20 miles. the next day she walked 16 miles. what is the percent of the decrease of zoes walking. I will give brainlist if you answer WITH WORK

Answers

Answer:

80%

Step-by-step explanation:

Answer: 20%

Explanation:
1. Turn it into a fraction (16/20).
2. Divide the numerator (16) by the denominator (20). (16÷20=0.8)
3. Subtract the decimal (0.8) from 1. (1-0.8=0.2)
4. Now turn the decimal (0.2) into a percentage by multiplying it by 100 and placing a “%” on the end. (0.2x100=20%)

The sum of the first 14 integers is 105.
Find the sum of the first 14 cubes.

i need help plz

Answers

9514 1404 393

Answer:

  11,025

Step-by-step explanation:

Interestingly the sum of the first 14 cubes is the square of the sum of the first 14 integers: 105^2 = 11,025.

Answer:

11,025 is your answer

Step-by-step explanation:

solve the system of equations using subtraction
4x-3y=-1
4x+y=11

Answers

Step-by-step explanation:

4x-3y=-1

4x+y=11

[tex]4x = - 1 + 3y \\ x = \frac{ - 1 + 3y}{4} [/tex]

[tex] - 1 + 3y = 11 - y \\ 3y + y = 11 + 1 \\ 4y = 12 \\ y = 3[/tex]

[tex]x = \frac{ - 1 + 3 \times 3}{4} \\ x = \frac{ - 1 + 9}{4} \\ x = \frac{8}{4} = 2[/tex]

Olivia has a shoe box in the shape of a rectangular prism. She decorates 4 faces of the box,
leaving the top and the bottom without decorations. The unshaded parts of the model and
the diagram below show the parts that she decorates. What is the total area that Olivia
decorates?

5 in.
11 in.
8 in

190 square inches
440 square inches
366 square inches
256 square inches

Answers

Taking the test rn, it’s 190 square inches.

Found the answer on another site. Worked fine, hope that helps

Answer:

440

Step-by-step explanation:

I HAVE I READY TOO AND IT’S KILLING ME

What is the multiplicity of the zero at x = 3 for this polynomial? y = x(x + 4)^3(x - 3)^5

Answers

Answer:

Solve for x. The multiplicity of a root is the number of times the root appears. x=0(Multiplicity of 1)x=−4 (Multiplicity of 3)x=3(Multiplicity of 5)

Step-by-step explanation:

Please help I’m stressing

Answers

It’s AAS because there are two congruent angles and one congruent side.


If the simple interest on $6,000 for 3 years is $1,620, then what is the interest rate?

Answers

Answer:

Interest rate: 9%

Step-by-step explanation:

Using the simple interest formula: A=P(1+rt)

A=Final amount

P=Principal amount

r=rate

t=time (years)

We just need to put in the information we have from the question and solve for r.

7,620=6000(1+r3)

7,620/6000=1+r3

1.27=1+r3

0.27=r3

r=0.09

r=9%

HELP PLS I RLLY NEED IT ILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!

Answers

Answer:

It’s C

Step-by-step explanation:

Answer:

C.  

Step-by-step explanation:

2/3÷4/21=3½

Plzzzz give me Brainliest!!!!!  

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