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I need help with all these questions

yKpoI14uk [10]

Answer:

Step-by-step explanation:

8 0

3 years ago

Find the approximate volume of the figure below, composed of a cone, a cylinder, and a hemisphere. If necessary, round your answ

mixas84 [53]

Answer:

Volume of the solid = 480.42m³

Step-by-step explanation:

To sov this question, we'll have to break the solid into different shapes of solid to solve it easily.

Volume of a cylinder = πr²h

volume of a hemisphere = 4/3πr³

Volume of a cone = ⅓πr²h

π = 3.14

r = 3m

h(cylinder) = 11m

Slant height of cone = 3√(2)

Height of cone = ?

To find height of cone, we can use pythagorean theorem

a² = b² + c²

[ 3√(2)]² = 3² + c²

9*2 = 9 + c²

C² = 18 - 9

C = 9m

Height of the cone = 9m

Volume of a cylinder = πr²h

V = 3.14 * 3² * 11

V = 310.86m³

Volume of the cylnder = 310.86m³

Volume of the hemisphere = 4/3πr³

V = 3.14 * 3³

V = 84.78m³

Volume of the hemisphere = 84.78m³

Volume of the cone = ⅓πr²h

V = ⅓ * 3.14 * 3² * 9

V = 84.78

Volume of the cone = 84.78m³

Volume of the solid = volume of cone + volume of hemisphere + volume of cylinder

Volume of the solid = 84.78 + 84.78 + 310.86

Volume = 480.42m³

5 0

4 years ago

2x+4y=6<br> 3x=12-6y<br> Solve by elimination

faltersainse [42]

Answer:

no solution

Step-by-step explanation:

2x + 4y = 6......reduces to x + 2y = 3

3x = 12 - 6y....reduces to x = 4 - 2y...rearranged is x + 2y = 4

so now we have :

x + 2y = 3

x + 2y = 4

ok....I dont have to go any farther to know that this has no solution because ur equations have the same slope and different y int, this means ur lines are parallel and have no solution because they never cross each others path.

5 0

3 years ago

Read 2 more answers

Which polynomial is in standard form

sukhopar [10]

Answer:

The third one

not sure bu i am working on this to so might be right

7 0

3 years ago

The data displayed by the graph indicate that in 2000,

MrMuchimi

Using an linear function, we find that by 2020 only 11% of all American adults believe that most qualified students get to attend college.

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A decaying linear function has the following format:

$A(t) = A(0) - mt$

In which

A(0) is the initial amount.
m is the slope, that is, the yearly decay.

In 2000, 45% believed, thus, $A(0) = 45$
Decaying by 1.7 each year, thus $m = 1.7$ .

The equation is:

$A(t) = 45 - 1.7t$

It will be 11% in t years after 2000, considering t for which A(t) = 11, that is:

$11 = 45 - 1.7t$

$1.7t = 34$

$t = \frac{34}{1.7}$

$t = 20$

2000 + 20 = 2020

By 2020 only 11% of all American adults believe that most qualified students get to attend college.

A similar problem is given at brainly.com/question/24282972

7 0

3 years ago