All categories

3 years ago

How many degree black belts in tae kwon do are there?

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

5 0

I think there are 4-5

You might be interested in

James is six years older than lousie. Eight years from now, James will be 4 times older than loise was 4 years ago. What is the

weeeeeb [17]

Answer: 26 years.

Step-by-step explanation:

Let x = current age of Louise (in years).

Then current age of James = x+6

Eight years from now, James's age = x+6+8= x+14

4 years ago, Louise's age = x-4

According to the question

x+14 = 4(x-4)

⇒ x+14 = 4x-16

⇒ 4x-x = 16+14

⇒ 3x = 30

⇒ x= 10 = current age of Louise (in years).

current age of James = 10+6 = 16 years

Sum of current ages = 16+10=26 years.

hence, the sum of the current ages is 26 years.

8 0

3 years ago

Determine whether the improper integral converges or diverges, and find the value of each that converges.

Temka [501]

Answer:

It diverges.

Step-by-step explanation:

We are given the inetegral: $\int\limits^{\infty}_2 \frac{1}{x} (\ln x)^2 dx$

$\int\limits^{\infty}_2 \frac{1}{x} (\ln x)^2 dx=\int\limits^{\infty}_2 (\ln x)^2 d(\ln x)=\\\\=\lim_{t \to \infty} \int\limits^t_2 (\ln x)^2d(\ln x)=\lim_{t \to \infty} \frac{(\ln t)^3}{3} |^t_2=\infty-\frac{(\ln 2)^3}{3} =\infty$

So it is divergent.

7 0

3 years ago

A textbook store sold a combined total of 368 psychology and sociology textbooks in a week. The number of psychology textbooks s

OLga [1]

Step-by-step explanation:

Total books = 368.

Sociology books = 92.

Psychology books = 3 times sociology books

= 3 x 92 = 276

Total = 276 + 92 = 368

3 0

3 years ago

Need by tomorrow please help

nikklg [1K]

1 - 9
2 -28
3 54
4 -100
5 -60
6 0
7 49
8 -135
9 -96
10 300
11 0
12 192

6 0

3 years ago

Read 2 more answers

What steps should be taken to calculate the volume of the right triangular prism? Select three options.

Mariana [72]

Answer:

Options A, D and E.

Step-by-step explanation:

Formula to calculate the volume of the triangular prism is,

Volume of the triangular prism = (Area of the triangular base)×(height)

= B × h

Area of the right triangular base = $\frac{1}{2}(\text{Base})(\text{height})$

= $\frac{1}{2}(8)(14)$

= 56 m²

Volume of the prism = $(56)(7)$

= 392 cubic meter

Therefore, from the given options correct options are Option A, Option D and Option E.

5 0

3 years ago

Read 2 more answers