Mathematics Middle School

Andre tried to solve the equation 1/4 ( x + 12 ) = 2. What was his mistake? Explain.

1/4x = -10
x = -40

Answers

Answer 1
Andre’s first mistake was that he didn’t distribute properly or at all. Instead of using the distributive property to get rid of the parenthesis, he moved the x to the 1/4 and subtracted 12 to the other side. Mistakes continue to occur from there so the equation solved would be:
1/4 (x+12)=2
1/4x+3=2
1/4x=-1
x=-4
Answer 2

His mistake is that he does not open the bracket first. The value of the x is negative of 4.

What is a BODMAS rule?

BODMAS rule means for the Bracket, Order, Division, Multiplication, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.

Andre tried to solve the equation 1/4 ( x + 12 ) = 2.

First, open the bracket, then we have

[tex]\dfrac{x}{4} + \dfrac{12}{4} = 2[/tex]

On simplifying, we have

[tex]\dfrac{x}{4 } + 3 = 2[/tex]

Subtract 3 from both sides, we have

[tex]\dfrac{x}{4} = -1[/tex]

Multiply the equation by 4, we have

[tex]x = -4[/tex]

More about the BODMAS rule link is given below.

https://brainly.com/question/24383445

Related Questions

Hours worked versus salary.
Hours Worked Salary
0 0
10 $300
20 $600
30 $900
40 $1200
Function?
If so,
Domain =
Range =
c. Height versus age.
Height (cm) Age (years)
160 20
160 25
160 30
160 35
160 40
160 45
160 50
Function?
if so
Domain=
Range=

Answers

Answer: 3686 and 65 years

Step-by-step explanation:

-7 - (-3) is equivalent to?
0-10
O-4
O 10
04

Answers

Answer:

The answer would be 0-4

Step-by-step explanation:

It is equivalent to -4

I NEED HELP ASAP PLEASE!!!

Choose Yes or No to tell whether the expression represents a 20% discount off the price of an item that originally cost d dollars.
A. 0.8d

B. d – 0.2

C. d – 0.2d

D. 1 – 0.2d

Answers

Answer: The answer is .D

A ball is dropped from the top of a 400-ft tall tower. The relationship between the time, t, in seconds, and the height, h(t), in feet, of the ball can be modeled by a quadratic function. Specific values of the function are shown in the table below
Part A: Determine the average rate of change of h(t) between t = 2 and t = 5.
Part B:Explain what this average rate of change means in terms of the context.

Answers

Answer : 3

step by step :

Drag the tiles to the boxes to form correct pairs. Not all tiles will be used.
Match the equivalent expressions.

Answers

I know that 3x+3y+2(2x-y) matches 7x+y
And x-4x+6y+(14x-5y) should match 11x+y but I can’t help you on the others. Sorry

the points (6,8) and (15,20) form a proportional relationship. find the slope of the line through the points. then use the slope to graph the line

Answers

Answer:

The answer would most-definitely be C.

Hope this helped!! Brainliest?

Step-by-step explanation:

Answer:

i think c

Step-by-step explanation:

sorry if im wrong

What is the area of this trapezoid?

50 in²

108 in²

126 in²

192 in²

Answers

Answer:

126 in2 or area

Step-by-step explanation:

2x9 for triangle sides then divide 2. =9 add the 2 triangle together =18

18+area of rectangle or 12x9 = 108+18=126

126 is the correct one

(middle school math vocabulary) (please help!)
so I was wondering if anyone could help me on some of these, I marked off the ones I’ve done. Thanks :(

Answers

Answer:

Equations are always true

÷ and x always undo each other

that is an equation

Step-by-step explanation:

Hayley has $155 in savings, and her brother Hank has $230. Hayley is saving $10 each week, and her brother is spending $15 each week. After how many weeks will their savings accounts have the same amount of money in them?

What is the best way to set up this word problem to solve?


15x+155=230+10x
15 x plus 155 is equal to 230 plus 10 x

155−15x=10x+230
155 minus 15 x is equal to 10 x plus 230

155+10x=230−15x
155 plus 10 x is equal to 230 minus 15 x

155−10x=230+15x

Please I need I will Brainliest!!!

Answers

Answer:

The Correct Answer is The 3rd one, Or C

Step-by-step explanation:

It will take 3 weeks

If its right mark me brainliest if its wrong report me.

Answer:

$155+$10x=$230-$15x

Step-by-step explanation:

weeks= x

$155+$10x=$230-$15x is the correct answer because hayley currently has $155 in her saving and you have to add the 10 dollars she saves each week which is 10x. On the other hand, her brother has $230 and spends $15 dollars every week so that is 15x.

pls help it is due today

Answers

264 students are in the whole entire school
Its 230 trust extending answer

5) plz help asap SHOW WORK PLZ HELP ASAP

Answers

Answer: A) 50 Minutes

(0.35 * 50) + 40 = 57.5

(0.65 * 50) + 25 = 57.5

57.5 = 57.5

Answer:

50 minutes A

Step-by-step explanation:

Do u need one

Peter placed an order with an online nursery for 6 apple trees and 5 azaleas and the order came to $147. The next order for 3 apple trees and 4 azaleas came to $96. What was the cost for each apple tree and for each azalea?

Answers

Answer:

$243

Step-by-step explanation:

The first order you made :

6 apple

5 azaleas

And total cast was:

 $147

The secant order you order was:

3 apples

4 azaleas

And total cast was:

$96

The total cast of both orders is:

$243

The total cost for each apple tree and for each azalea is $243

What is Algebra?

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

The first order you made are consistes of 6 apple and 5 azaleas

And total cost was  $147

The second order you order was consistes of 3 apples and 4 azaleas

And total cost was $96

The total cost of both orders is;

147 + 96 = $243

More about the Algebra link is given below.

brainly.com/question/953809

#SPJ2

am i right or wrong pls help

Answers

Answer:

Your correct!

Answer:

Step-by-step explanation:

your final score is at least 117 points (second)

because you can be hit by an asteroid and game will end before you are able to score more points, or you can keep on scoring more than 117

100 people are asked their favorite color. 29 people say that blue is their favorite color.
What percentage of the group chose blue?

Answers

29% since it is 29 out of 100 people
The answer is 29% as 29/100

Which equations demonstrate how to solve for x, and what is the value of x?

a The equation 52 + 90 + x = 180 deomnstrates one way to solve for y, and y = 38 degrees. Since x + y = 180, then x = 142 degrees.
b The equation 52 + 90 + x = 90 deomnstrates one way to solve for y, and y = 52 degrees. Since x + y = 180, then x = 128 degrees.
c The equation 52 + 90 + x = 180 deomnstrates one way to solve for x, and x = 38 degrees.
d The equation 52 + 90 + x = 90 deomnstrates one way to solve for x, and x = 52 degrees.

Answers

Answer:

A

Step-by-step explanation:

The first step is to find yAll triangles have interior angles that add together to measure 180 degreesSince we know this you can subtract the known angle values (90 and 52) from 180180-52-90= 38 38 is your yx is an exterior angle so y+x also equals 180in order to find x just take your y value and subtract it from 180180-38=142

The equation 52 + 90 + x = 180 deomnstrates one way to solve for y,

and y = 38 degrees. Since x + y = 180, then x = 142 degrees.

Calculation to find out angles :

the sum of interior angles in a triangle is always 180 degrees

Add all the interior angles and make it equal to 180 degrees

[tex]90+52+y=180\\142+y=180\\[/tex]

Subtract 142 from both sides

y=38 degrees

angle y is 38 degrees

Angles y  and x  are linear pair of angles , the sum of linear pair is 180 degrees

[tex]y+x=180\\38+x=180[/tex]

Subtract 38 from both sides

x=142 degrees

The equation 52 + 90 + x = 180 deomnstrates one way to solve for y, and y = 38 degrees. Since x + y = 180, then x = 142 degrees.

Learn more information about 'Angles in a triangle ' here

brainly.com/question/7888180

Find each percent of change. Round to the nearest whole percent if necessary. State whether the percent of change is an increase or a decrease
3. $15.60 to $11.70

Answers

Answer:

Percent of change: -25% ; The percent is a decrease

Step-by-step explanation:

The percent decreases

PLEASE HELP I WILL GIVE BRAINLIEST TO THE FIRST PERSON TO ANSWER

1. The sum of two numbers is 55. The difference of the same two numbers is 3. What are the two numbers?

2. The product of two numbers is 66. The difference of the same two numbers is 19. What are the two numbers?

Answers

Answer:

1. 2x = 60

x = 30

y = x - 5 = 30 - 5 = 25

2. x= 11

12 ft
B
B
2 If AABC – ADEF, what is
the value of x?
D
3 cm
E
7 cm
A 22 ft
26 ft
B
24 ft
D 28 ft

Answers

Answer:

B

Step-by-step explanation:

Answer : the answer is B

Explanation :

If a cross section of the rectangular pyramid is cut perpendicular to the base, but not passing through the top vertex, what would be the shape of the resulting cross section?

Answers

Triangle

The lateral face of a pyramid is a triangle, so a cross section that passes through the top vertex and the base is also a triangle.

PLEASE HELP MEEEEEEEEEEEEEE!

Answers

Answer:

C.) D.)

Hope this helps :0)

Answer:

cis the required

false

false

true

false

false

Will give brainliest!!! Can someone find the equation for this graph, beware, kinda difficult.

Answers

Answer:

2+2+4+4+4+2+2+4+4 and so on

it is a pattern that goes 2,2,4,4,4,4,2,2,4,4,4,4....

a smaller equation would be 2+2+4×3+2+2+4×2 since the graph stops there.

hope this helps! =D

the equation is y = 4x

whats 5 x 2/5 x 6/13? :P

Answers

Answer:

Step-by-step explanation:

32/13.

5*2/5=2

2*6/13=32/13

Answer:

0.92307692307

Step-by-step explanation:

Help me Please!!!!!!!!!!

Answers

The answer is likely b

Jonathan has 3/4 pound of grapes. How many 1/8 pound servings can Johnathan make from his grapes?

HELP PLEASE

Answers

Answer:

3/4 pounds = 6/8 pounds

6/8 divided by 1/8 = 6

6 servings of grapes

Step-by-step explanation:

Hope this helps!

Answer:

3/4 divided by 1/8 = 6

Step-by-step explanation:

i hade the answer alr but somoe answer in so it may look like copying

Unite rate for 178 minutes swam in 5 days.

Answers

Answer:

The unit rate for 178 minutes swam in 5 days is 35.6 minutes per day.

Step-by-step explanation:

The unit rate is found by dividing the total amount by the time, which would be [tex]\frac{178}{5}[/tex] or 35.6 minutes every day.

36.5 minutes/day. Yesssss

HELP!!! Complete the table for the given rule.
Rule:y=x+2/3
x y
__ 2
8/3 __
22/3 __

Answers

Answer:

x      y

4/3   2

8/3   10/3

22/3 8

In this graph, Write the equation of the line in fully simplified slope-intercept form. Please help me with this equation! I need help

Answers

Answer:

y = 1/2x + 6

Step-by-step explanation:

Answer:

y=-x+2

Step-by-step explanation:

i'll give brainliest to first person to answer!!

a triangular prism has a base area of 12cm2 and a height of 4cm
what is the volume?

3 cubic centimeters
24 cubic centimeters
124 cubic centimeters
48 cubic centimeters

Answers

Answer: 48

Step-by-step explanation:

V=48cm³

h Height 4 cm  

AB Base area 12 cm

( I don't think this is the correct answer)

Answer: 48 cubic centimeters

Step-by-step explanation:

Go to go-ogle look up your answer and then you should be at this "Triangular prism" then you can put in the numbers and get the answer right and its really easy! I hope you have a nice day.

Write an equation for each line (use the picture)

Red Line:

Blue Line:

Green Line:

Yellow Line:

Answers

Answer:

Red Line: y=4

Blue Line: y=-2

Green Line: x=-1

Yellow Line: x=6

Step-by-step explanation:

Red line: the line crosses through 4 on the y axis. Therefore, y=4.

Blue line: the line crosses through -2 on the y axis. Therefore, y=-2.

Green line: the line crosses through -1 on the x axis. Therefore, x=-1.

Yellow line: the line crosses through 6 on the x axis. Therefore, x=6.

This is a bit confusing because when you see a horizontal line your mind might assume it would be an x=. Yet, it is the opposite. Hope this helps!

please use 3.14 for the pi

Answers

Answer:

huh

Step-by-step explanation:

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