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Sonja [21]
3 years ago
6

Pls help pls help pls help

Mathematics
2 answers:
svetoff [14.1K]3 years ago
8 0
The answer is D, 18-3K.
zhenek [66]3 years ago
8 0

Distribute the equation

31+6+8k+-11k+-19

Combine like terms

(8k+-11k)+(31+6+-19)

ANSWER: D. 18-3k

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A cylindral drill with radius 5 cm is used to bore a hole through the center of a sphere with radius 9 cm. Find the volume of th
masya89 [10]

The volume of the ring-shaped remaining solid is <u>1797 cm³</u>.

The volume is the total space occupied by an object.

The volume of a sphere of radius r units is given as (4/3)πr³.

The volume of a cylinder with radius r units and height h units is given as πr²h.

In the question, we are asked to find the volume of the remaining solid when a sphere of radius 9cm is drilled by a cylindrical driller of radius 5cm.

The volume will be equal to the difference in the volumes of the sphere and cylinder, where the height of the cylinder will be taken as the diameter of the sphere (two times radius = 2*9 = 18) as it is drilled through the center.

Therefore, the volume of the ring-shaped remaining solid is given as,

= (4/3)π(9)³ - π(5)²(18) cm³,

= π{972 - 400} cm³,

= 572π cm³,

= 1796.99 cm³ ≈ 1797 cm³.

Therefore, the volume of the ring-shaped remaining solid is <u>1797 cm³</u>.

Learn more about volumes of solids at

brainly.com/question/14565712

#SPJ4

3 0
1 year ago
The area of a triangle is the product of the base of the triangle times the height of the triangle, divided by two.
trasher [3.6K]

Answer:

Step-by-step explanation:

Almost correct.  I'd write this statement as follows:

"The area of a triangle is the product of the base and height of the triangle, divided by two."

or...

"The area of a triangle is half the product of the base and height."

3 0
3 years ago
Assinale todas as assertivas corretas com relação aos princípios de ensino na Matemática.
Neko [114]
Do u speak English...............
6 0
3 years ago
The nth term of the sequence <br> -2,1,4,7,10
alex41 [277]

Answer:

Step-by-step explanation:

An = -2+(n-1)3

An=-5+3n

8 0
3 years ago
Read 2 more answers
HELP ME PLEASE I DONT UNDERSTAND THIS !!!
ioda

The car is speeding at a rate of 33.3mph

<h3>Speed and distance of an object</h3>

If a certain car going 60 mph can stop in 180 ft, then we can express this as:

  • 60mph = 180ft

To determine the speed for a car traveling at 100ft, we will have:

  • x = 100ft

Take the ratio of the expression

60/x = 180/100
180x = 6000

x = 33.3mph

Hence the car is speeding at a rate of 33.3mph

learn more on speed here: brainly.com/question/4931057

6 0
2 years ago
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