Mathematics Middle School

Mr. Levin tried to simplify this expression. He made a mistake! Explain where the mistake is in this problem. Give the correct simplified expression too!
(8x + 8) - (7x - 2)
8x + 8 - 7x - 2
x + 6

Answers

Answer 1

Answer:

Instead of x+6, it should be x+10

Step-by-step explanation:

Answer 2

Answer:

His mistake is putting x+6.

Step-by-step explanation:

You can't add x to 6 because they are not the same.

The right answer is X=6.

Related Questions

A doctor told a patient to drink 1.6 liters of water everyday. About how many liters should the patient drink in 14 days?

Answers

He would have drank 22.4 litres of water in 14 days

Answer:

22.4

Step-by-step explanation:

1.6 * 10 = 16 + 1.6 * 4 = 6.4 = 16 + 6.4 = 22.4

Which of the following is a pair of vertical angles?

EXAMPLE: 1 and 4 , 1 and 5

Answers

5 and 7
1 and 3
4 and 2
8 and 65
5 and 7
1 and 3
4 and 2
8 and 65

Kate is playing a game with a set of 24 cards equally divided into 4 colors (red, green, blue, and yellow). Find the probability of her randomly selecting a red card, not replacing it, and then selecting another red card.

A. 1/36

B. 5/92

C. 3/16

D. 2/49

Answers

Is B because yes is B

Answer:

its b

Step-by-step explanation:

Marina deposits $1,500 in a savings account at Bank of America. The bank will pay her 5% interest at the end of the year. How much additional money from interest will Marina receive?

Answers

Answer:

75 of additional money

Step-by-step explanation:

5% of 1,500 is 75

and 1,500 plus 75 is 1575

Identify the function table for the function f(x) = 4x + 4

Answers

Answer:20

Step-by-step explanation:

It’s 20 hope this helped <3

100 points! Will give brainliest! Cou|d somebody he|p me with geometry? And exp|ain, please. Thank you for reading this <3

Answers

Answer:

The measure of angle a is 45 degrees.

Step-by-step explanation:

Notice that since PS = RS, this is an isosceles triangle. This means that the base angles are equal. We also know that the sum of interior triangles of a triangle equals 180, then, if 'a' is the base angle, we have the following equation:

90 + a + a = 180

2a = 180 - 90 = 90

a = 90/2 = 45

a = 45

Alan has a photo that is 6 in by 8 in. what will the dimensions of the photo be if he scales it down by a factor of 1/2?

3 inch by 4 in
6 in by 8 in
12 in by 16 in
1.5 in by 2 in​

Answers

Answer:

Half of 6 is 3

Half of 8 is 4

so it will be 3 in by 4 in.

Step-by-step explanation:

Answer:

3 by 4

Step-by-step explanation:

Hey, help plz! 9r/sif r = 6 and s = 3?????

Answers

Answer:

18

Step-by-step explanation:

9 x 6 / 3  

54/3

18

What is the probability that the computer produces the first letter of your name?

Answers

1/26

Because there are 26 letter in the Alphabet

Answer: 1/26

Step-by-step explanation:

Here is another one. Sowwie

Answers

Answer:

the answer is b

Step-by-step explanation:

have a good day :)

Answer:

B.

Step-by-step explanation:

Please answer!! Im confused currently!!

Answers

circumference/perimeter = 2 x pi x r or pi x d
so 2 x 3.14 x 1.7 = 10.676
so C (10.7)

Answer:

2πr=c, Perimeter, or Circumference is what we are looking for, and this is the formula.

so we need to figure out 2 x 3.14 x radius:1.7 = Perimeter or Circumference

2 x 3.14 = 6.28

6.28 x 1.7 = 10.28

P.S. answer is 10.7, my answer is simplified.

~Hope this helps~

4, 4, 6, 7, 9, 9, 9, 10, 14, 17, 21
Mean:

Median:

Mode:

Range:

Answers

Answer:

Mean: 10

Median: 9

Mode: 9

Range: 17

Step-by-step explanation:

Mean is adding all the numbers together then *divide by the number of numbers you added:

4 + 4 + 6 + 7 + 9 + 9 + 9 + 10 + 14 + 17 + 21 = 110

110 / 11 = 10

Median is the middle number: 9

The number that appears the most often is the mode: 9

The range is the difference between the lowest and highest number:

21 - 4 = 17

That is the amswer u are welcome

If x = 12 units, y = 4 units, and h = 8 units, find the area of the rhombus shown above using decomposition.
A.
128 square units
B.
16 square units
C.
32 square units
D.
96 square units

Answers

Answer:

i cant see you file

Step-by-step explanation:

Answer:

D. 96 square units

Step-by-step explanation:

This is the correct answer, many have gotten it wrong in the past

but it's 96 units squared.

The 8 red markers in a box account for 4% of all markers in the box. How many markers are in the box?
a.200
b.100
c.120
d.210

Answers

200 because it’s not 120

Answer:

c I think

Step-by-step explanation:

I don't know...

Help me plzzzzzzzzz asapppppppp​

Answers

Answer:

(

390

Step-by-step explanation:

What is 1 1/3 - 5/6???

Answers

11/3 -5/6 is equal to 2 and 5/6! Hope that helps.

Please help me ASAP!! I will give Brainliest!!

When multiple glaciers start their downward flow from a single point, they create a _____.

A canyon, a mountain cliff, a mountain peak, a natural arch, or a table mountain?

Answers

Answer:

Mountain peek

Step-by-step explanation:

Pyramid like structure

Answer:

Mountain Peak

Step-by-step explanation:

Mountain peak termed as Pyramidal peak is formed by the movement of multiple glaciers. When glacier starts moving from a central point there by causing erosion of consolidated land mass to form angular and sharp mountain peak.

A glacier while moving/melting carries away the base material attached to it by two ways either plucking or abrasion. Mountain peaks get exposed when the glacier melts down

What is the remainder when dividing (y^2 – 2y + 2) by (y – 2)?
A. –2
B. –1
C. 1
D. 2

Answers

I think its A. -2.

sorry if wrong.

PLEASE HELP!! Write the equation of the line below in slope-intercept form. Remember, write any slopes as reduced, improper fractions!

Answers

Answer:

y= -2x + 7

Step-by-step explanation:

first, we know the slope will be negative because the like is going down

lets look at the point that is on the y-axis, this will be our y-intercept

7 is the point hitting the y axis, plug this into the equation

so far we have y=7

now let's find the slope, starting at 7, we go down 2 and over one to get to the next point. let's add this

y= -2x+7

Answer:

y= -2x + 7

Step-by-step explanation:

PLEASE HELP ME WITH THIS I WILL GIVE YOU BRAINLIEST

Answers

Answer:

7 1/5

Step-by-step explanation:

5 goes into 36, 7 times. That's your whole number

5x7=35

You'll have 1 left over 36-35=1 . That's your numerator. Denominator stays the same.

Answer:

7 1/5

Step-by-step explanation:

36/5 is 7, remainder 1. So, the answer is 7 1/5

At a sale this week, a sofa is being sold for $240. This is a 36% discount from the original price. What is the original price?

Answers

Step-by-step explanation:

0.36x = 240

x = $666.6 orignal price

Answer:

the original price of the sofa is $375

Step-by-step explanation:

z - 311 = 151



what would z be???

Answers

Answer: 160

Reason: 151 - 311 = 160

Answer:

462

Step-by-step explanation:

z-311=151

add 311 to both sides

z=151+311

add 151 and 311 to get 462

z=462

hope this helped :)

Describe the probability of rolling a die and landing an even number while tossing a coin and landing on heads.

A. as likely to happen as not to happen

B. impossible

C. likely

D. unlikely

Answers

Answer:

d

Step-by-step explanation:

The first step is to find the possibility of the die landing on an even number which is 3/6 as there are 6 possible turn outs and 3 of them are even. Which means the probability is 3/6 or in its simplified version 1/2. The second step is to find the probability of landing on heads which is 1/2 as there are 2 possible turn outs and 1 of them is heads. Which means the probability is 1/2 (it cannot be simplified) . To find the probability of both we need to times them together so 1/2×1/2= 1/4. So the probability of getting both is 1/4 which is unlikely probability so the answer is D .

6. Heidi read 26 pages in 14 minutes. At what speed did she read?

Answers

Answer:

1.9 or about 2 pages per minute

Step-by-step explanation:

Just 26/14

Good luck luv!

Heidi read 26 pages in 14 minutes, then the speed of Heidi of reading book will be equal to 1.85 page per minute.

What is arithmetic Operations?

The four fundamental operations of arithmetic are addition, subtraction, multiplication, and division of two or even more items.

Included in them is the study of integers, especially the order of operations, which is important for all other areas of mathematics, notably algebra, data management, and geometry.

As per the given information in the question,

Total pages read by Heidi = 26

Total time to read the pages = 14 minutes

So, the speed of reading will be,

s = 26/14

s = 1.85 page per minute.

To know more about arithmetic operations:

https://brainly.com/question/25277954

#SPJ2

240 is 60% of what number? You may choose to complete a double number line OR percent proportion. Show your work

Answers

Answer:

400

Step-by-step explanation:

You divide 240 by 6 and then multiply by 10.

400
Hope this helps

Identify the measure of angle x.

Answers

Find the value of X in triangles by subtracting known angle measurements from 180 degrees. Since the value of all angles within a triangle must equal 180 degrees, if you know at least two angles, you can subtract them from 180 to find the missing third angle.
17 yuhhhhhhhhhhhhhhhhhhhh

if you make 8$ an hour and get a 10% raise what is your new hourly pay?

Answers

Answer: 2.2% I’m not sure (ps. I’m really not sure like this is what I think it is butttt someone’s answer might be better so go with there’s)

Please help it's due inna few minutes

Answers

Answer: i dont know

Step-by-step explanation: why 7th grade not 8th

Answedsa

dadasdasad

asdasdsad

ads

d

d

d

d

d

d

Step-by-step explanation:

Charlie runs a book rental business. He currently charges $3 per book and rents out an average of 38 books a day.

According to a study, for every 50¢ increase in rental price, the average business can expect to lose 4 rentals a day.

Complete the equation that models this scenario, where b(x) is the revenue generated and x is the number of 50¢ price increases.

b(x) = -
x2 +
x +

Answers

Here is the answer to your problem

Find the perimeter of polygon abcdefg.

Answers

Answer:

11=6-y=f+e+g+d+c+b+a=the perimeter of a polygon meaning the perimeter of the polygon is 34blocks

Step-by-step explanation:

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