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2 years ago

Find the volume of the cone round to the nearest tenth

Mathematics

1 answer:

svlad2 [7]2 years ago

5 0

Answer:

pi*2^2*2sqrt3/3

if pi=3

8sqrt3

Step-by-step explanation:

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Solve the following equations;- x - 9 /√x + 3 =1

fgiga [73]

Answer:

13 , 6.

Step-by-step explanation:

A equation is given to us and we need to find out the value of x . The given equation to us is ,

$\sf\implies \dfrac{ x -9}{\sqrt{x+3}}= 1$

Cross multiply ,

$\sf\implies x - 9 =\sqrt{ x +3}$

Squaring both sides ,

$\sf\implies (x - 9)^2 = x + 3$

Simplify the whole square ,

$\sf\implies x^2+9^2-2.9.x = x +3 \\$

$\sf\implies x^2+81 - 18x = x -3$

Add 3 and subtract x on both sides ,

$\sf\implies x^2 -18x-x +81-3=0$

Simplify ,

$\sf\implies x^2 -19x +78=0$

Split the middle term of the quadratic equation,

$\sf\implies x^2-13x-6x+78=0$

Take out common ,

$\sf\implies x( x -13)-6(x-13)=0$

Take out ( x -13 ) as common ,

$\sf\implies ( x -13)(x-6)=0$

Equate both factors to 0 ,

$\sf\implies \boxed{\pink{\sf x = 13,6}}$

Hence the value of x is 13 or 6 .

7 0

2 years ago

Please help me with this

matrenka [14]

Answer:

Step-by-step explanation:

A=a+b

2h=6+5

2·8=44

8 0

2 years ago

I need with #10, please?

777dan777 [17]

Answer:

h=7ft

Step-by-step explanation:

sinФ=opposite/hypotenuse

sin45°=5/h

0.71=5/h

multiply via by h

0.71h=(5/h)h

h cancel h it remains 5

0.71h=5

divide through by 0.71

0.71h/0.71=5/0.71

h=7.04ft

h=7ft approximately

4 0

3 years ago

Cody wants to attend the fall festival at school. The price of admission to the festival is $5.50 and each game cost an addition

My name is Ann [436]

75 divided by 15.00 is 20 because of you put 75 into 150 you can put it in 2 times evenly then you take down the 0 and 00 - 0 = 0 so answer is 20 games.

5 0

2 years ago

Complete each ordered pair so that it is a solution of the given linear equation

Anastasy [175]

Answer:

(3, -2) and (9, 0)

Step-by-step explanation:

x-3(-2)=9

x+6= 9

x=3

9-3y=9

-3y=0

y=0

3 0

3 years ago