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?

Answer:

nonlinear

Step-by-step explanation:

The correct answer is nonlinear because of the 2x^2, it does not come out as a straight line

Answer:

I think that it is 10,7

Step-by-step explanation:

I am just guessing so I am really sorry if it is wrong.

Answer:

The answer is 19

Step-by-step explanation:

Range is the difference between the largest and smallest number, so in this case the largest number is 25 and the smallest number is 6. Subtract 25 and 6 to get the range. So the answer would be, The range of the following numbers is 19.

Answer:

34

Step-by-step explanation:

Add w and x. Then take that answer and subtract it from 180.

w+x=146

180-146=34

Answer:

it's the 2and answer because

Step-by-step explanation:

1,15 is not the same ratio of 2,24

Answer:

No, because 1:15 is not the same ratio as 2:24.

Step-by-step explanation:

2/24 reduces to 1/12 not 1/15 so these ratios are not the same.

Answer:

use the top and bottom

Step-by-step explanation:

x-axis && y - axis

Answer:

Step-by-step explanation:

Key: So α is [tex]45:12[/tex] and β is [tex]45:18[/tex].

Proportionality means: "the quality of corresponding in size or amount to something else. the requirement of proportionality of punishment to offense"

the fact of a variable quantity having a constant ratio to another quantity."

Ok so now you have to answer the following question using that key.

1. False.

2.True

3.False

4.False

I hope this helps a bit.....I think I  got them right. :)

Answer:

b

Step-by-step explanation:

-7 + 4r = -15

+7             +7

4r = -8

divide both sides by 4

r = -2

Hope this Helps!!!

Answer:

r=-2

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

4r−7=−15

Step 2: Add 7 to both sides.

4r−7+7=−15+7

4r=−8

Step 3: Divide both sides by 4.

4r/4=−8/4

r=−2

Answer:

B

Step-by-step explanation:

Answer:B

Step-by-step explanation:

Answer:

x= 11.04

................

Answer: its the first one and the one before the last!

Step-by-step explanation: Hope this helps!!!

Answer:

I think the second one

Answer:

Option 3. 90000 is divisible by 2

Step-by-step explanation:

70581÷2=35,290.5

16853÷2=8,426.5

90000÷2=45,000

This implies that only 90000 is divisible by 2

Answer:

10.900km/h 11. a. 5:3 b. 3:5

Step-by-step explanation:

10. 2700/3=900

11. A. 5:3

b. 3:5

Answer:

15 divided by 3 = 5

Step-by-step explanation:

21 divided by 3 = 7

6 divided by 3 = 2

Have a Good Day : )

Answer:

5

Step-by-step explanation:

y=x/3

substituting x=15 in the above equation

y=15/3

y=5

Mark me as the brainliest if I helped you, i need it thanksss!!

Answer:

7.8 x 10^-6 or 7.8E-6

Step-by-step explanation:

Answer: = 7.8 × 10-6

Step-by-step explanation: Hope this helps

Answer:

2^2*3^2*5

Step-by-step explanation:

180

90 2

45 2

9 5

3 3

Answer:

2.11

Step-by-step explanation:

3.5 x 2 + 9 = 16

10.4 - 1.4 x 2 = 7.6

16/7.6

= 40/19 or 2.11 to the nearest hundredth

Therefore the answer is 2.11

Answer:

2.11

Step-by-step explanation:

i took this myself

Answer:

x = 2

Step-by-step explanation:

Rearrange terms

Subtract from both sides of the equation

Simplify

Divide both sides of the equation by the same term

Simplify

If you have like this again type it into a search engine it will answer

that's

where I got this

Answer:

[tex]y=\frac{1}{2}[/tex]

Step-by-step explanation:

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

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

[tex](4y+4)(1-y)= 3[/tex]

[tex]4y(1-y)+4(1-y)=3[/tex]

[tex]4y-4y^{2} +4-4y=3[/tex]

[tex]-4y^{2}=3-4[/tex]

[tex]4y^{2}=1[/tex]

[tex]y^{2} = \frac{1}{4}[/tex]

[tex]y=\sqrt{\frac{1}{4} }[/tex]

[tex]y=\frac{1}{2}[/tex]

Answer:

2x + 2

Step-by-step explanation:

LOLOL☝️answer is up there☝️LOLOL

Answer:

false

Step-by-step explanation:

4(1) - 3(6)<12

4 - 18<12

12<12

so no the truth value is false 12 is not less than 12

Answer:

A. true

Step-by-step explanation:

If you plug in x and y, the equation is 4(1)-3(6)<12. SImplify to get 4-18<12 which is equal to -14<12 which is true.

Answer:

There is no drawing or pic. You might want to re-post it. ^^

Step-by-step explanation:

Answer: A floor plan is an example of a scale drawing.

Answer:

a.

Step-by-step explanation:

-4 times 2x is -8x, not 8x.

Answer:

4

Step-by-step explanation:

Given that :

Total fraction of paint Carin has = 2/3 bottle

Fraction used to paint a model airplane = 1/6

Number of model. Airplanes 2/3 of a bottle could paint ;

Total fraction of paint / fraction used to paint a model airplane

(2/3) ÷ (1/6)

2/3 * 6/1

= 12 / 3

= 4 model airplanes

Answer: 21.4

Step-by-step explanation: Since W=7.8 all you have to do is 29.2 - 7.8 which would give you 21.4

Answer:

Ratios to roses to lilies....6:9

Reduced.....2:3

Step-by-step explanation:

Pretty simple doesn't need explaining

Answer:

the download cost for a song is $1 and $11 for a movie

Step-by-step explanation:

According to the questions, the following equations are as follows:

Let us assume the song be x

And, the movies be y

So,

20x + 13y = $163.........(i)

13x + 13y = $156........(ii)

Now solve substract second equation from the first equation

7x = $7

x = $1

And the y value is

20 + 13y = $163

13y = $163 - $20

13y = $143

y = $11

Hence, the download cost for a song is $1 and $11 for a movie

Answer:

D

Step-by-step explanation:

Hope this helps :D Hav a great day :P