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3 years ago

I will give brainlest please answer and explain

Mathematics

1 answer:

Artemon [7]3 years ago

3 0

Answer:

Step-by-step explanation:

There is 6 students in the 8hr zone.

Gosh, do I have to explain? A is a, c is c!

4+6+6+6.5+6.5+6.5+6.5+7+7+7+7+7.5+7.5+7.5+8+8+8+8+8+8.5=141.

141÷20=7.05. So, no, it is not b.

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Sixty three thousandths in standard form

Hunter-Best [27]

Answer:

sounds like .063 to me

3 0

3 years ago

An engineer is planning a new water pipe installation. The circular pipe has a diameter of d=20\text{ cm}d=20 cmd, equals, 20, s

aivan3 [116]

Answer: The answer is 314.28 cm² (approx.).

Step-by-step explanation: Given that an engineer is going to install a new water pipe. The diameter of this circular pipe is, d = 20 cm.

We need to find the area 'A' of the circular cross-section of the pipe.

Given, diameter of the circular section is

$\textup{d}=20~\textup{cm}.$

So, the radius of the circular cross-section will be

$\textup{r}=\dfrac{\textup{d}}{2}=\dfrac{20}{2}=10~\textup{cm}.$

Therefore, cross-sectional area of the pipe is

$\textup{A}=\pi \textup{r}^2=\dfrac{22}{7}(10)^2=\dfrac{2200}{7}=314\dfrac{2}{7}=314.28~.~.~.~\textup{cm}^2.$

Thus, the answer is 314.28 cm² (approx.).

4 0

4 years ago

If the geometric mean of a and 34 is 6 sqrt(17) find the value of a

Alborosie

Using the geometric mean concept, it is found that the value of a is 18.

----------------------

The geometric mean, of a data-set of n elements, $(n_1, n_2, ..., n_n)$ , is given by:

$G = \sqrt[n]{n_1 \times n_2 \times ... \times n_n}$

That is, the nth root of the multiplication of all elements.

----------------------

In this question:

Two elements(n = 2), a and 34.
$G = 6\sqrt{17}$

Thus:

$\sqrt{34a} = 6\sqrt{17}$

We find the square of each side, so:

$(\sqrt{34a})^2 = (6\sqrt{17})^2$

$34a = 36\times17$

Simplifying both sides by 17:

$2a = 36$

$a = \frac{36}{2}$

$a = 18$

The value of a is 18.

A similar example is given at brainly.com/question/15010240

3 0

3 years ago

Factor Completely.<br> 3x^2-75

alexandr402 [8]

Answer:

3(x+5)(x−5)

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Translate into an inequality<br> The quotient of y and 7 is greater than or equal to -19

Dafna11 [192]

Answer:

y/7 >/ -19

That middle sign is the greater than or equal to sign (couldn't find on keyboard)

Step-by-step explanation:

y divided by 7 is greater than or equal to -19

Quotient means divided by.

7 0

3 years ago