All categories

3 years ago

A student says that the solution of 375=x -28 is 347. Explain the student error and find the correct answer

Mathematics

2 answers:

podryga [215]3 years ago

5 0

Answer:

x=403

Step-by-step explanation:

move all the terms that don't contain x to the right side and solve

aksik [14]3 years ago

4 0

Answer:

Explanation - instead of adding 28 to each side to get rid of the -28, the student subtracted 28 from each side

Correct Answer - x = 403

Step-by-step explanation:

The student subtracted 28 from each side instead of adding 28 to each side. When you add 28 to each side, you are adding 28 to -28, which makes it 0 and disappear. When you subtract 28 from each side, you are adding -28 to -28, which makes it -54, and not 0.

The correct answer can be found by adding 28 to each side, which gives us an answer of x = 403.

Hope this helps!! :)

You might be interested in

one number is four times as large as another if the numbers are added together the result is six less than seven times the small

liubo4ka [24]

Answer:

The numbers are 12 and 3.

Step-by-step explanation:

We can solve this problem by working with the information we have and setting up some equations.

We know that one number is four times as large as another. So, let the smaller number be represented by the variable x and the bigger number be represented by 4x, since it is four times as large.

Now, we know that if the numbers are added together, then the result is six less than seven times the smaller number. This can also be represented by the equation 4x + x = 7x - 6.

Let's solve that equation like so:

$4x + x = 7x - 6\\5x = 7x - 6\\-2x = -6\\x = 3$

So, the smaller number must be 3 (remember that x represented the smaller number). To find the bigger number, all we need to do is multiply 3 by 4, which gives us 12. Therefore, the numbers are 12 and 3.

4 0

3 years ago

Tanya is printing a report. There are 100 sheets of paper in the printer, and the number of sheets p after t minutes of printing

BARSIC [14]

Answer:

0=-8t + 100

8t=100

t=12.5 minutes

Step-by-step explanation:

Hope this helped! Im sorry if it didn't. Here is the link:

brainly.com/question/5881676

7 0

2 years ago

A rectangular plot of ground is 10 meters longer than it is wide. It’s area is 20,000 square meters what equation will help find

kow [346]

If x=width, then the equation would be:

x(x+10)=20,000

The length is 10 meters longer than the width(x), so the length is x+10.
To get the area(20,000) you multiply width by length, hence x(x+10).

Hope this helps.

3 0

3 years ago

Find the slope of the line that passes through (5,2) and (10,7).

Bad White [126]

Answer:

Hi! The nswer to your question is m = 1

Step-by-step explanation:

☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆

☆Brainliest is greatly appreciated!☆

Hope this helps!!

- Brooklynn Deka

8 0

2 years ago

Read 2 more answers

4vir4ik [10]

Answer:

37.5%

Step-by-step explanation:

You need to convert this fraction into a decimal to start. After you do this you need to turn the decimal into its percentage form. Soo 0.375 = 3/8 = 37.5%

8 0

2 years ago

Read 2 more answers