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marusya05 [52]
3 years ago
5

Least common multiple of 9 45 and 81

Mathematics
1 answer:
Ksivusya [100]3 years ago
6 0
The least common multiple is 405.
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The sum of a rational number and a irrational number is _____ rational
Natasha_Volkova [10]

Answer:

never

Step-by-step explanation:

5 0
3 years ago
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Find the missing length indicated in the figure.
AVprozaik [17]

Answer:

45

Step-by-step explanation:

Since the lines of hypotenuse are parallel,the triangles are similar

20/8 = x/18

cross multiplication

8x = 20x18

8x=360

x=45      

7 0
3 years ago
Find the height of a right cylinder with surface area 160pie square units and radius 5 units
jenyasd209 [6]

Given:

Radius of a cylinder = 5 units.

Surface area of the cylinder = 160\pi

To find:

The height of the right cylinder.

Solution:

Surface area of a cylinder is:

A=2\pi rh+2\pi r^2

Where, r is radius and h is the height of the cylinder.

Putting r=5, A=160\pi in the above formula, we get

160\pi =2\pi (5)(h)+2\pi (5)^2

160\pi =10\pi h+2\pi (25)

160\pi =10\pi h+50\pi

Subtract 50\pi from both sides.

160\pi -50\pi=10\pi h

110\pi=10\pi h

Divide both sides by 10\pi.

\dfrac{110\pi}{10\pi}=h

11=h

Therefore, the height of the cylinder is 11 units.

8 0
3 years ago
What is the correct way to write 1,550,000,000 in scientific
Anika [276]
1.55 x10 to the power of 9

            9
1.55x10

should look something like that
6 0
3 years ago
3D shape practice. I'm stuck in this problem. Pleas help.
timofeeve [1]
1)we calculate the volume of the right rectangular prism
volume=lenght x width x heigth
volume=12 ft * 8.5 ft * 4 ft=408 ft³

density= mass / volume  ⇒ mass=volume * density.
density=0.25 pound /ft³

2) we calculate the mass of the right rectangular prism.
mass=volume * density
mass=408 ft³(0.25 pound / ft³)=102 pounds.

answer: c.  102

 
5 0
3 years ago
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