A student simplified the expression (3x^2+2)-(2x^2+4) as x^2+^6 Explain what the student did incorrectly and state the correct answer.

Answers

Answer 1

Answer:

x^2 - 2

Step-by-step explanation:

The correct procedure would have been to distribute the negative to the +4 also, so you would have +2 - 4 = -2 so the final answer should have been

x^2 - 2

Answer 2

(3x²+2)-(2x²+4)

write in a different form, remove parentheses

3x²+2-2x²-4

calculate the value of the corresponding terms

x²-2

Answer: Yes, he made a mistake.

A simplified expression would look like this x²-2 and not like this x²+^6.


Related Questions

Estelle bought 3 pineapples to cut up and serve on a fruit platter. The pineapples each cost the
same amount, and they cost less than $12 in all.
Let x represent how much each pineapple cost. Which inequality describes the problem?
3x > 12
3x < 12
Solve the inequality. Then, complete the sentence to describe the solution.
Each pineapple cost less than $

Answers

Answer:

Eh cafe donete mal reo jama kolotake? 24 eh moi -09....? kelare mei osaje.

Step-by-step explanation:

The inequality that describes the solution is 3x < 12.

The cost of each pineapple is less than $4.

What is inequality?

It shows a relationship between two numbers or two expressions.

There are commonly used four inequalities:

Less than = <

Greater than = >

Less than and equal = ≤

Greater than and equal = ≥

We have,

Number of pineapples = 3

Cost of each pineapple = x

Now,

The cost of all the 3 pineapples = less than $12.

The cost of 3 pineapples.

3x < 12

x < 12/3

x < 4

Thus,

The inequality is 3x < 12.

The cost of each pineapple is less than $4.

Learn more about inequalities here:

https://brainly.com/question/20383699

#SPJ2

Four bags of rice and two bags of corn weigh 52 lbs. Three of the bags of rice weigh 24 lbs. What is the ratio of weight of the bag of corn to the weight of the bag of rice?

Answers

Answer:

2.1666666

Step-by-step explanation:

52÷24=2.1666666

PLease help me. YOu'll get 10 points.\

Answers

Answer:

Option D is your answer . If I'm right so,

Please mark me as brainliest. thanks!!!

The ratio of students to parent's is 4:2 respectively .If there 28 students ,how many parent's are there ?

Answers

[tex]\sqrt{x} x^{2}[/tex]

Parallel Lines cut by a transversal

Answers

Answer:

-4

Step-by-step explanation:

1. They are alternate exteriors meaning they are supposed to be the same so you sort the equation like 134+x=130

2. Then you pass 134 both side like ×=130

-134

3. Which will equal :-4

If your credit card is stolen and the thief runs up a total debt of $1,000, but you notify the issuer of the card as soon as you discover it is missing, what is the maximum amount that you must pay according to Federal law?

Answers

Answer:

50 dollars

Step-by-step explanation:

college website

can someone helppp??

Answers

Step-by-step explanation:

bhai question to bahut hi tough hai yaar Kaise Banegi use to nahin Hogi yah Mujhe brand list Mar kar dena but ok

Carla can fill 5 glasses with soda every 20 seconds. Complete the table using equivalent ratios.​

Answers

Answer:

Glasses 12 : 48 because, when you do 20/5 it equals to 4 so, the ratio will equal to seconds = Glasses • 4

44 seconds = 11 glasses

Step-by-step explanation:

A charity fundraiser charges 102 dollars per plate. If there are 85 guests at the fundraiser , how much money did they earn​

Answers

Answer:

8,670

Step-by-step explanation:

because if 102 dollars per plate you take 102x85 = 8,670

Answer:

8670

Step-by-step explanation:

first you multiply 102 x 85 then you get 8670

Help Math if u dont know it plz dont answer THIS IS TIMED

Answers

Answer:

Option B will be your answer

Step-by-step explanation:

hope it helps

Answer:

B is the correct one

Step-by-step explanation:

Hope that helps

Bob has $11 to buy juice for a party. If each bottle of juice costs $2, how many bottles of juice can Bob buy?​

Answers

Answer:

5 is the answer

Step-by-step explanation:

2 4 6 8 10

1. 2 3 4 5

Juices

Answer:  $0.18

Step-by-step explanation:

Help me please >.< It would help a lot

Answers

Answer:

8

Step-by-step explanation:

if 25 is a quarter of 100, divide 32 by 4 and you get your answer

Answer:

8/32

Step-by-step explanation:

To find the numerator, you must divide 100 by 32 which equals 3.125. And whatever you do to the bottom you must do to the top, so 25 divided by 3.125 is 8

I hope this helps ;)

Help please and explain this for me please thanks

Answers

9514 1404 393

Answer:

  (d)  D: [0, 60]; R: [-15, 0]

Step-by-step explanation:

The model is of the underwater portion of the net, so the only part of the graph we're interested in is that below the x-axis.

The x-intercepts of 0 and 60 define the bounds of the domain.

The range is the vertical extent of the graph in that domain, from y=-15 to y=0.

So, the domain and range are ...

  Domain: 0 ≤ x ≤ 60

  Range: -15 ≤ y ≤ 0

PLEASE HELP I HAVE 10 MINUTES LEFT!
label each pair of triangles with the postulate or theorem that proves the triangles are congruent.

Answers

Im actually having my teacher look at this one right now. Give me a second.. My teacher said try side angle side... I have no idea

plsss help i’ll give brainliest if you give a correct answer

Answers

Answer:

48 drops of red food coloring

Step-by-step explanation:

32/8 = 4

SO she uses 4x as much yellow food coloring meaning you need to use 4x as much red food coloring.

4 x 12 = 48 so she needs to add 48 drops of red food coloring

Answer:

Mya will need 48 drops of red food coloring

Need help finding slop please!

Answers

The slope is
1. Find ordered pairs ( 1 , -4 ) ( 3, 3)
The formula is
M= y2 - y1
_____
X2- X1
2. Replace the numbers
M = 3 - 4.
———
1-3
Subtract
3. You get -1/-2
4. Divide you get 0.5
( but if you need rise and run use -1/-2) rise top run bottom
Slope is 0.5 I think
Hope this helps here a picture of my lesson.

What type of real numbers are these

Answers

Answer:

u didn’t put the numbers

Step-by-step explanation:

Solve

5x-2>3x+11




Thanks

Answers

Answer:

x > 6.5

Step-by-step explanation:

Let's temporarily replace the inequality sign ">" with "=".

This gives us: 5x - 2 = 3x + 11.

If we subtract 3x from both sides we are left with:

2x - 2 = 11.

If we add 2 to both sides, we are left with:

2x = 13.

If we divide both sides by 2, we are left with

x = 6.5.

Now let's substitute back in the inequality sign

x > 6.5

Hope this helps!!!! :)

Answer:

X>6½

Step-by-step explanation:

5x-3x>11+2

2x>13

x>6½

*X>13:2 and that is how i get 6½

I hope so that i help you

HELP PLZ AGAIN. Same material. It is still timed. Will give 100 pts and brainly. This is vital to my math grade. Time is on the essence and my math grade is at stake if I do not pass this. I need Slope Intercept form of the two points plotted on this graph

Answers

Answer:

y=4x-4

Step-by-step explanation:

Looking at the graph, the slope is 4 and the y-intercept is at (0, -4), so the equation is

[tex]\boxed{y=4x-4}[/tex]

Answer:

y=4x-4

Step-by-step explanation:

Hope it helps

Calculate the missing angle measure of each triangle on the left butterfly wing. Write the angle measure inside the angle. The right butterfly wing is a reflection of the left butterfly wing and corresponding angles are congruent.

Answers

Answer:

See attached

The angle measures added.

One side is colored for you, you can do same for the other side

If I have 14 neutrons and 11 electrons, what is my mass number?

A.25
B.3
C.11
D.14

Answers

Answer:

A : 25

Step-by-step explanation:

In a neutral atom, the number of electrons is equal to the number of protons. The atomic number indicates the number of protons.

The mass number is the sum of the number of neutrons and the number of protons.

mass number=protons+neutrons

As we know from the atomic number, the number of neutrons is 14 and the number of electrons is 11.

mass number = 14 + 11

I think the answer is 25

Pls answer this. I don't understand

Answers

10^a is above 10^4 and in the next step that equals 1, so 10^a would need to be 10^4 because any number divided by itself equals 1.

Now if a is 4 then b needs to be 15-4 = 11

The answer is a = 4, b = 11

Answer:

The answer is a = 4, b = 11

Step-by-step explanation:

Now give that guy above brainliest!

Sally works for 38 hours per week. Her weekly wage is £355.68
She receives a pay increase of 23p per hour.
Work out her new weekly wage.

Answers

Answer:

£364.42

Step-by-step explanation:

£355.68 ÷ 38 hours = £9.36 per hour

£9.36 + £0.23 = £9.59 per hour

£9.59 * 38 = £364.42

Would sinA 15/17 be corrrect?

Answers

Answer:

yes

Step-by-step explanation:

sinA = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{BC}{AC}[/tex] = [tex]\frac{15}{17}[/tex]

10
9
.
7
29
6
5
-2-1
7 8 9 10
Which line has a greater rate of change than line q?
y=-** + 10
Oy=+*+1
Oy = ** - 1
Oy=*

Answers

Noahnisnusbusbsbsubusubsusbuzbuzbzib

You want to buy a new phone that costs $1250. Your cell phone plan allows for 15% off the price of any new phone. How much will you pay?

Answers

Answer:

$1187.5

Step-by-step explanation:

Cost of cellphone =$1250

15 percent of 1250 is =62.5

so,

1250-62.5=1187.5

I NEED HELP IVE BEEN STUCK FOR 20 MIN PLEASE

Answers

Answer:  3/4 cm³

Step-by-step explanation:

V = width x height x length

V = (1/2cm)(3cm)(1/2cm)

V = (3/2)(1/2)

V = 3/4 cm³

1. Convert the following temperatures to the celsius scale.
(a) 293 K
(b) 470 K.​

Answers

293k = 293- 273

= 20°C

What is the measure of angle L?

Round only your final answer to the nearest hundredth.

Answers

Answer:

1.27 radians

Step-by-step explanation:

Hiiooo! Can someone please help ❤️❤️❤️

Answers

Answer:

tan x =  [tex]\frac{f}{e}[/tex]

cos x = [tex]\frac{e}{d}[/tex]

sin x = [tex]\frac{f}{d}[/tex]

Step-by-step explanation:

tan = [tex]\frac{opposite}{adjacent}[/tex]

tan x = [tex]\frac{f}{e}[/tex]

cos = [tex]\frac{adjacent}{hypotenuse}[/tex]

cos x = [tex]\frac{e}{d}[/tex]

sin = [tex]\frac{opposite}{hypotenuse}[/tex]

sin x = [tex]\frac{f}{d}[/tex]

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