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2 years ago

Someone plz help me out

Mathematics

2 answers:

inysia [295]2 years ago

6 0

Answer:

Step-by-step explanation:

In 60-30 triangles, if the hypotenuse is x, the side which is 6 would be x/2, meaning that the hypotenuse would be 6 x 2, which is 12

anygoal [31]2 years ago

5 0

$\sin(30°) = \frac{6}{x} \Leftrightarrow x = \frac{6}{ \sin(30°)} = \frac{6}{ \frac{1}{2} } = 6 \times 2 = 12 \\ \Rightarrow D.\: 12$

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astra-53 [7]

Answer:

348

Step-by-step explanation:

Length-l

Width-w

Height-h

A=2(wl+hl+hw)=2·(8·9+6·9+6·8)=348

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2 years ago

Hey uhm.. im not super good at math so i need help with this : 0.45/4.2 = x/14 solve for x

Alina [70]

Answer:

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Step-by-step explanation:

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2 years ago

The area of this parallelogram is 120 ft. Find the value of h

julsineya [31]

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2 years ago

6870000000000000 scientific notation

hjlf

Answer:

6.87 x 10^15

Step-by-step explanation:

6.87 * 10^15 = 6870000000000000

Hope this helps :)

P.S. Message me if this is wrong

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8 0

1 year ago

Work out the volume of the shape

pashok25 [27]

Answer:

$\large\boxed{V=\dfrac{1,421\pi}{3}\ cm^3}$

Step-by-step explanation:

We have the cone and the half-sphere.

The formula of a volume of a cone:

$V_c=\dfrac{1}{3}\pi r^2H$

r - radius

H - height

We have r = 7cm and H = (22-7)cm=15cm. Substitute:

$V_c=\dfrac{1}{3}\pi(7^2)(15)=\dfrac{1}{3}\pi(49)(15)=\dfrac{735\pi}{3}\ cm^3$

The formula of a volume of a sphere:

$V_s=\dfrac{4}{3}\pi R^3$

R - radius

Therefore the formula of a volume of a half-sphere:

$V_{hs}=\dfrac{1}{2}\cdot\dfrac{4}{3}\pi R^3=\dfrac{2}{3}\pi R^3$

We have R = 7cm. Substitute:

$V_{hs}=\dfrac{2}{3}\pi(7^3)=\dfrac{2}{3}\pi(343)=\dfrac{686\pi}{3}\ cm^3$

The volume of the given shape:

$V=V_c+V_{hs}$

Substitute:

$V=\dfrac{735\pi}{3}+\dfrac{686\pi}{3}=\dfrac{1,421\pi}{3}\ cm^3$

7 0

2 years ago