Ask question

Ask question

All categories

3 years ago

15

Someone help me with these math problems please !! (It is not obligatory to put the explanation so I save time and you will answ

er me more quickly please!

1 answer:

dimulka [17.4K]3 years ago

7 0

Answer:

Step-by-step explanation:

$\frac{2}{3} * 5 = \frac{2}{3}\frac{3}{2} x \\$

x = 10/3

You might be interested in

1²+3²+4²+.......+(2n-2)²= ⅓n(2n-1)(2n+1)

sergiy2304 [10]

1² + 3² + 4² + 4(n - 1)² = ¹/₃n(2n - 1)(2n + 1)
1² + 3² + 4² + (2n - 2)² = ¹/₃n(2n - 1)(2n + 1)
  1 + 9 + 16 + (2n - 2)(2n - 2) = ¹/₃n(2n(2n + 1) - 1(2n + 1))
10 + 16 + (2n(2n - 2) - 2(2n - 2)) = ¹/₃n(2n(2n) + 2n(1) - 1(2n) - 1(1) 16 + (2n(2n) - 2n(2) - 2(2n) + 2(2)) = ¹/₃n(4n² + 2n - 2n - 1)
26 + (4n² - 4n - 4n + 4) = ¹/₃n(4n² - 1)
26 + (4n² - 8n + 4) = ¹/₃n(4n² - 1)
  26 + 4n² - 8n + 4 = ¹/₃n(4n²) - ¹/₃n(1)
  4n² - 8n + 4 + 26 = 1¹/₃n³ - ¹/₃n
  4n² - 8n + 30 = 1¹/₃n³ - ¹/₃n
  + ¹/₃n + ¹/₃n
   4n² - 7²/₃n + 30 = 1¹/₃n³
-1¹/₃n³ + 4n² - 7²/₃n + 30 = 0
-3(-1¹/₃n³ + 4n² - 7²/₃n + 30) = -3(0)
-3(-1¹/₃n³) - 3(4n²) - 3(-7²/₃n) - 3(30) = 0
  4n³ - 12n² + 23n - 90 = 0

8 0

4 years ago

Some one explain this to me

lubasha [3.4K]

7.50
25% also equals 1/4 so divide 130.00 by 4 which equals 32.50
subtract 32.50 from 130.00 which equals the cost, 97.50
97.50 minus 90$ is 7.50, therefore that is the answer

4 0

3 years ago

Helppppppp pleaseeeeeeee

Lilit [14]

B. Is the right answer

First you have to take the common elements then use an identity/formula to get the rest

x^3 - 3x^2 + x-3
x^2 (x-3) +1 (x-3)
(x^2 +1) (x-3)
(x-1)(x+1)(x-3) {using a^2-b^2 on x^2-1^2}

4 0

3 years ago

Which statements are true about x? Select three options

polet [3.4K]

The true statements about x are:

x ∈ B ∪ C

x ∈ B ∩ C

x ∈ A ∪ C

<h3>Further explanation</h3>

A set is a clearly defined collection of objects.

To declare a set can be done in various ways such as:

With words or the nature of membership

With set notation

By registering its members

With Venn diagrams

Multiplying set A x B is by pairing each member of set A with each member of set B.

<u>Example: </u>

<em>A = {1, 2, 3} </em>

<em>B = {a, b} </em>

Then

A x B = {(1, a), (1, b), (2, a), (2, b), (3, a), (3, b)}

Union of set A and B ( A ∪ B ) is rewriting each member A and combined with each member B.

Intersection of set A and B ( A ∩ B ) is to find the members that are both in Set A and Set B.

<u>Example: </u>

<em>A = {1, 2, 3, 4} </em>

<em>B = {3, 4, 5} </em>

A ∪ B = {1, 2, 3, 4, 5}

A ∩ B = {3, 4}

Let us now tackle the problem!

To solve this problem, it is better to draw the Venn diagram as shown in the picture in the attachment.

Let :

A = { p , q , s , t }

B = { q , r , t , x }

C = { s , t , v , x }

$\texttt{ }$

$B \cup C = \{ r , q , t , v , \boxed{x} \}$ ✔

$B \cap C = \{ t , \boxed{x} \}$ ✔

$A \cup C = \{ p , q , s , t , v , \boxed{x} \}$ ✔

$A \cap C = \{ s , t \}$ ⤬

$A = \{ p , q , s , t \}$ ⤬

$\texttt{ }$

From the results above, it can be concluded that the correct statements are:

x ∈ B ∪ C

x ∈ B ∩ C

x ∈ A ∪ C

$\texttt{ }$

<h3>Learn more</h3>

Mean , Median and Mode : brainly.com/question/2689808
Centers and Variability : brainly.com/question/3792854
Subsets of Set : brainly.com/question/2000547

<h3>Answer details</h3>

Grade: High School

Subject: Mathematics

Chapter: Sets

Keywords: Sets , Venn , Diagram , Intersection , Union , Mean , Median , Mode

5 0

3 years ago

Read 2 more answers

Consider a circle whose equation is x + y - 2x - 8=0. Which statements are true? Select three options

Mandarinka [93]

Answer:

The standard form of the equation is

${(x - 1)}^{2} + {(y - 0)}^{2} = {3}^{2}$

Step-by-step explanation:

The given circle has equation:

${x}^{2} + {y}^{2} - 2x - 8 = 0$

We regroup similar terms to obtain:

${x}^{2} -2x + {y}^{2} = 8$

We now complete the square to obtain:

${x}^{2} -2x + {( - 1)}^{2} + {y}^{2} = 8 + {( - 1)}^{2}$

${(x - 1)}^{2} + {(y - 0)}^{2} = 9$

Or

${(x - 1)}^{2} + {(y - 0)}^{2} = {3}^{2}$

This is now of the form:

${(x - h)}^{2} + {(y - k)}^{2} = {r}^{2}$

which is referred to as the standard form equation of the circle:

4 0

4 years ago