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3 years ago

8

Find the value of x. If necessary, round your answer to the nearest tenth. O is the center of the circle. The figure is not draw

n to scale.
12
9
O
5
12
оа
Oь
Oc
Od
15
9

1 answer:

I am Lyosha [343]3 years ago

4 0

Answer:

10.82

Step-by-step explanation:

6^2+9^2=x

36+81=117

Square root of 117 is 10.82

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The atmospheric pressures at the top and the bottom of a building are read by a barometer to be 96.0 and 98.0 kPa. If the densit

expeople1 [14]

Answer:

Option d - 204 m

Step-by-step explanation:

Given : The atmospheric pressures at the top and the bottom of a building are read by a barometer to be 96.0 and 98.0 kPa. If the density of air is 1.0 kg/m³.

To find : The height of the building ?

Solution :

We have given atmospheric pressures,

$P_{\text{top}}=96\ kPa$

$P_{\text{bottom}}=98\ kPa$

The density of air is 1.0 kg/m³ i.e. $\rho_a=1\ kg/m^3$

Atmospheric pressure reduces with altitude,

The height of the building is given by formula,

$H=\frac{\triangle P}{\rho_a\times g}$

$H=\frac{P_{\text{bottom}}-P_{\text{top}}}{\rho_a\times g}$

$H=\frac{(98-96)\times 10^3}{1\times 9.8}$

$H=\frac{2000}{9.8}$

$H=204\ m$

Therefore, Option d is correct.

The height of the building is 204 meter.

4 0

4 years ago

19- (1 - 4x) - 9x +30<br>Simplify

Lapatulllka [165]

19 - (1 - 4x) - 9x + 30 = -5x+48

(Don't forget the negativity symbol before the answer, if it isn't visible. It's not fully visible on my screen.)

6 0

4 years ago

Please help it’s urgent

yawa3891 [41]

Answer:

1) 12/18

2) 15/25

3) 32/40

4) 6/14

5) 8/15

6) 16/24

7. 12/27

Step-by-step explanation:

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3 years ago

If their food and beverages cost $25.30 and there is an 8% meals tax, how much is the bill? Enter your answer to the nearest cen

Aneli [31]

Answer:58.60

Step-by-step explanation:

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3 years ago

What is the surface area of a dome ( 1/2 sphere) with a radius of 12 meters?<br> A.

Step2247 [10]

Answer:

$Area = 1357.344m^2$

Step-by-step explanation:

Given

Shape: dome

$r = 12$

Required

The surface area

This is calculated as:

$Area = 3\pi r^2$

So, we have:

$Area = 3*3.142* 12^2$

$Area = 1357.344m^2$

4 0

3 years ago