Mathematics Middle School

Elena solved the equation 2(x – 9) = 10 In the
following way. What mistake did she make?

Elena Solved The Equation 2(x 9) = 10 In Thefollowing Way. What Mistake Did She Make?

Answers

Answer 1

Answer: Subtract 18 on both sides is wrong. Its supposed to be add 18 on both sides.

Step-by-step explanation:

Answer 2
She subtracted instead of adding.
2x-18=10
You add 18 to both sides
So it would be 2x=28
Then you divide 2 on both sides so x=14

Related Questions

HELP IS NEEDED FAST PLEASE

Answers

Answer:

17.1

Step-by-step explanation:

If you have 15.50 and you divide 0.75 you get 20.6 and if you subtract 3.50 you get 17.1 which is your answer. Boom

-2(4r - 6) Mathhhhhhhhh pls

Answers

Answer: -8r+12

Step-by-step explanation:

Answer:   -8r + 12

============================================

Explanation:

The outer term -2 is multiplied by each term inside

-2 times 4r = -8r-2 times -6 = 12

Then those results are added to get -8r + 12 as our final answer. We cannot combine these terms because they are not like terms.

I used the distribution property, also known as the distributive property.

That says a*(b-c) = a*b - a*c

In this case, a = -2, b = 4r, and c = 6.

stephenie puts 30 cubes in a box the cubes are 1/2 inch each side the box hold 2 layers with 15 cubes in each layer what is the volume of the box

Answers

Answer:

15 cubic inches

Step-by-step explanation:

hope this helped

15 because the box holds 15 cubes in 1 layer so the other layer can hold 15?? Sorry if I’m wrong ;)

Choose the best statement that explains the graph represented by these ordered pairs.

These ordered pairs do NOT represent a straight line.
These ordered pairs do NOT represent a straight line.

These ordered pairs represent a straight line.

Answers

Answer:

Straight line

Step-by-step explanation:

The slope is always the same

Ps probably c lol

I am not in the mood to do math and I can't think straight but this is way overdue.

Answers

Answer:

Step-by-step explanation:

625/25 as both currencies have just been multiplied by 100

Answer:

the second option

Step-by-step explanation:

should i explain why or no?

This table models a linear function.
x −12 −8 −4 4
y 4 2 0 −4

Enter the coordinates of the y-intercept in the boxes.

Answers

Answer:

(0,-2)

Step-by-step explanation:

(0,-2) is the correct answer.

PLEASE HELP QUICK!


There are 3 questions pleas answer them all

Answers

Answer:

First and second are line A, and the third is line

A dwarf seahorse swims 3/4 inch in a minute. How many minutes would it take the seahorse to swim 1/3 inch?

Answers

Answer

D

Step-by-step explanation:

3/4 needs to be divided by 1/3.

HELP PLZZZZZZ
Which of the following shows 30 + 12 rewritten using the distributive property and the GCF of the addends?
3(5 + 2)
6(10 + 6)
3(10 + 12)
6(5 + 2)

Answers

Answer:

6(5+2)

Step-by-step explanation:

5+2 is 7 then 7×6 is 42 and 30 + 12 is 42

What does X =?
5x−2=−10−3x

Answers

5x-2=10-3x
8x=-8
8x/8=-8/8
X=-1

Answer:

x = -1

Step-by-step explanation:

PLEASE HELP ME



Find the slope and y-intercept of the following graph.

Answers

The y-intercept is 2 and the Slope is 2/4 but if you simplify that, it will be 1/2.

someone help me please im very stuck

Answers

Answer:

(0,2)

Step-by-step explanation:

from y=mx+b to find the y intercept b

Answer:

y = -7

Step-by-step explanation:

It's a horizontal line so y is constant, it would be y = b because the slope is 0.

Since it passes through the point (5, -7) we can assume the line is at y = -7

A recipe for chicken noodle soup is shown.
How many servings could you make if you had 2.5 quarts of broth?
A) 6 servings
B) 3.2 servings
C) 10 servings
D) 16 servings

Answers

Answer: C: 10 Servings

Step-by-step explanation:

Answer:

B:3.2 severing

Step-by-step explanation:

which fraction has the greatest value?
12/13, 19/20, 8/9, or 77/99

Answers

Answer:

19/20

Step-by-step explanation: Convert the fractions into decimals so

19/20= 0.95

12/13= 0.92307692307

8/9= 0.88888888888

77/99= 0.77777777777

The correct answer is 19/20. I hope this helps.

Which Venn diagram best represents the relationship among integers, natural numbers, rational numbers, and whole numbers?

Answers

I want to say D but i am not for sure look up examples and see which one comes to mind

Answer:

the answer is D

Step-by-step explanation:

all rational numbers are integers

Please help 15 points and brainliest!

Answers

C because the proportions are equal and multiplied by 4/4

There are 5 friends who decide to split an 88- ounce bag of popcorn. If they split it evenly, how many ounces of popcorn will each friend get?

Solution:

Number Model:

Explain what you did with the remainder and why.

Answers

Answer:

17 remainder 3

Step-by-step explana

17 * 5 = 85

88-85=3

3s the remainder bc 3 popocorn cant be split by 5 ppl

just leave the remainder in the bag

also v sry if im wrong

88/5 = 17 r 3 OR 17.6 [I divided because it says to “SPLIT an 88 ounce ....”

Please help me I will give you the briain thing and extra points. (image below) 9/13

Answers

Answer:

C is the answer

Step-by-step explanation:

the answer is C hope this helps

pls help me! (question is in the picture)

Answers

Answer:

getting the wrong answer or not using the correct symbols

Step-by-step explanation:

Getting the wrong answer or simply acting bad

Please help with this question! Look at the images, there are two you have to answer!! PLEASE HELP!

Answers

The answer is...

1. Is A
2.Is B

Hope This helps!!

There are no values of x and y that make y = -x + 10 and y = 2x + 4 true at the same time. True or False

Answers

Answer:

False

Step-by-step explanation:

there is no number for x and y to make both true

hop it helps :)

The person above is right

Jaimi went to have a manicure that cost $30. She wanted to tip the technician 30% and the tax was 5.75%. How much did she spend total for the manicure

Answers

Answer: $41.24

Step-by-step explanation: Hope this helped.

The answer is $41.24 I think

Help me, please. Please also explain to me why you picked your answer.

Answers

Answer: Lower left corner  [tex]\frac{29}{18+29} \times 100[/tex]

We have 29 people who chose fishing out of 18+29 people who filled out the survey. We don't use 60 because not everyone filled out the survey, and we're only focusing on survey participants. The "times 100" at the end will move the decimal point 2 spots to the right, and convert it to percent form.

For example, if you had 2 people who liked fishing out of 8 total then 2/8 = 0.25 = 25% of the people like fishing.

Answer:it's C) 29×100/18+29

Step-by-step explanation:

For the percentage, we need the total number of boys who completed the survey which is 18+29. Again, the number of boys who chose fishing is 29. So, we should divide 29 by (18+29) & multiply 100c with it in order to get the percentage .

1/4 x __ = 1/2 = ?
I need this answered ASAP, it's 80% of my grade
PLEASE helppppppp

Answers

the answer is 2.

1/4 x 2 = 1/2.
2 - 1/4 x 2 is 1/2 I’m pretty sure

What is the answer to 4x+3x+x
I don't know but and it's 7x+x or just 7x

Answers

Answer:

7

Step-by-step explanation:

it’s 7x+x because the x counts as a 1 so it can’t just disappear

What is the answer? Please help me!!! PLEASE!!!!

Answers

Answer:

a.) y=1/3x +3

Step-by-step explanation:

yes heavenly father, help me through these tough ways of life, and answer for me

Answers

Answer:

3/2 T

Step-by-step explanation:

We can use ratios to solve

1/4 paprika           3/4 paprika

--------------------- = ----------------

1/2 garlic                x garlic

Using cross products

1/4x = 1/2 *3/4

1/4x = 3/8

Multiply each side by 4

1/4x *4 = 3/8 *4

x = 3/2

please help me guys :(

Answers

Answer:

6(11+4+13) is the correct answer hope this helps

Step-by-step explanation:

the world record for the 100 m sprint is 9.77 s. How long would it take to run 1 m at this speed?

Answers

Answer:0.85

Step-by-step explanation:

It would take 0.0977 seconds to go to 1 meter at that speed

Which expression represents the difference (4b+7)−(6b−3)? show your work..

Answers

Answer:

-2b + 10

Step-by-step explanation:

(4b + 7) - (6b - 3)

4b + 7 - 6b + 3

-2b + 10

-2b + 10 is the answer
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