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Natalka [10]
4 years ago
7

My friend needs help again

Mathematics
1 answer:
ICE Princess25 [194]4 years ago
6 0

Answer:

  • 3/2
  • 2/3
  • 3/4

these numbers are limited and you can make sure using a calculator

You might be interested in
If using the method of completing the square to solve the quadratic equation
Assoli18 [71]

Answer:

The number would have to be added is 2

Step-by-step explanation:

To find the form of the completing square of the quadratic function:

  • Divide the coefficient of x by 2
  • Square the quotient
  • Subtract the numerical term from the square of the quotient

Let us do these steps with our question

∵ x² - 2x - 1 = 0

→ Divide the coefficient of x by 2

∵ The coefficient of x is -2

∴ -2 ÷ 2 = -1

→ Square the -1

∵ (-1)² = 1

→ Subtract the numerical term from 1

∵ The numerical term = -1

∵ 1 - (-1) = 1 + 1 = 2

∴ We must add 2 to -1 to get 1

→ (x² - 2x - 1 + 2) - 2 = 0

→ (x² - 2x + 1) = 2

→ (x - 1)² = 2

The number would have to be added is 2

4 0
3 years ago
Is negative 11 irrational or rational
tino4ka555 [31]

Answer: 11 is rational

Step-by-step explanation: All rational numbers are whole numbers.

11 is a whole number.

Irrational numbers cannot be expressed as fractions.

8 0
3 years ago
Chile plans to add about 40,404 square kilometers of national parkland. Suppose a single piece of land is 40,404 square kilomete
9966 [12]

<u><em>Answer:</em></u>

The length of the diagonal is 284 km

<u><em>Explanation:</em></u>

<u>1- we get the side length of the side:</u>

We are given that the land has a square shape and an area of 40,404 km²

Area of square = (side)²

40,404 = (side)²

side = +√40,404

side = 201.007 km ≈ 201 km

<u>2- we get the length of the diagonal:</u>

Refer to the attach picture representing the area of land.

We can infer that the two side lengths along with the diagonal of the land form a right-angled triangle.

Therefore, to get the diagonal, we can apply the Pythagorean theorem as follows:

Diagonal = \sqrt{(201)^2+(201)^2}

Diagonal = 284.2 ≈ 284 km

Hope this helps :)

3 0
3 years ago
Please try to do #5.
STALIN [3.7K]

Answer:

Read and understand the question. Still having doubts? Ask about it in the comment section so you can give them a correct answer!

Step-by-step explanation:

6 0
3 years ago
0.5a − 0.3 = 5 (solve for a)
Alla [95]
0.5a - 0.3 = 5

Add 0.3 to both sides:

0.5a = 5.3

Divide both sides by 0.5:

a = 10.6
3 0
3 years ago
Read 2 more answers
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