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3 years ago

3x-1 = 5x - 11 what is x

Mathematics

1 answer:

Karo-lina-s [1.5K]3 years ago

4 0

Answer:

x = 5

Step-by-step explanation:

3x-1 = 5x-11

Subtract 3x from both sides:

-1 = 2x - 11

Add 11 to both sides:

10 = 2x

Divide both sides by 2:

5 = x

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Directions: Find the value of x.

Umnica [9.8K]

I think it would be 12.207… use the Pythagorean theorem (a^2+b^2=c^2) so 10^2+7^2
100+49=149
Then take square root of 149 to undo the the squaring of c and it should be around 12.207 :)

4 0

2 years ago

Read 2 more answers

Is my answer correct? // tell me if i'm wrong with details!!

Anna11 [10]

Answer:

Step-by-step explanation:

This is vertical reflection, because reflections are made across vertical lines.

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3 years ago

The table shows how many books the students in Bergdalsskolan list during the summer. There were 48 students who list 4 books. a

Juliette [100K]

Step 1:

First, find the total number of students.

Let the total number of students = m

Step 2:

Find the total number of students using the percentage of 4 books.

48 students listed 4 books with a percentage of 16%

$\begin{gathered} 48\text{ = 16\% of m} \\ 48\text{ = }\frac{16}{100}\text{ }\times\text{ m} \\ 48\text{ = }\frac{16m}{100} \\ \text{Cross multiply} \\ 16m\text{ = 48 }\times\text{ 100} \\ 16m\text{ = 4800} \\ \text{m = }\frac{4800}{16} \\ \text{m = 300} \end{gathered}$

Hence, there are 300 students.

$\begin{gathered} \text{Number of students that had 1 book = 24\% of 300} \\ =\text{ }\frac{24}{100}\text{ }\times\text{ 300} \\ =\text{ }\frac{7200}{100} \\ =\text{ 72 students} \end{gathered}$

72 students had 1 book.

b) What percentage more read 2 books than 4 books?

percentage that read 2 books = 36%

percentage that read 4 books = 16%

36 - 16 = 20%

There are 20% students that read 2 books than 4 books.

8 0

1 year ago

Bob did chores for his neighbor. The first day he earned $8. Then he earned $10 a day for

Aleksandr [31]

9514 1404 393

Answer:

$128

Step-by-step explanation:

Bob's total earnings were ...

$8 + ($10/day)(6 days/week)(2 weeks) = $8 +$10·6·2 = $128

Bob earned a total of $128.

7 0

3 years ago

The product of 23 and 20

Anna007 [38]

460 is your answer

20 x 23 = 460

7 0

3 years ago

3x-1 = 5x - 11 what is x​

3x-1 = 5x - 11 what is x