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SashulF [63]
3 years ago
10

Whoever gives me the correct answer to this will get a brainlest I need the answer ASAP!

Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
8 0

Volume of cone= 1/3πr^2h

8842.24 m^3= 1/3πr^2h

1/3*3.14*33*r^2= 8842.24m^3

r^2 = 8842.24*3/3.14*33

r^2= 26526.72/103.62

r^2 = 256

r= √256

r= 16m

Hope it helps. Please mark brainliest.

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Let the area of a rectangle in square metres is x^2+13x+42 how much longer is the length than the width of the rectangle
worty [1.4K]

Answer:

1

Step-by-step explanation:

Area of rectangle

lw

So we have to factorise the expression

x²+13x+42

x²+6x+7x+42

x(x+6)+7(x+6)

(x+7)(x+6)

So

x+7-(x+6)

x+7-x-6

1

4 0
3 years ago
55 points see attachment below
Ludmilka [50]

Answer:

  f(3) = -20

Step-by-step explanation:

To find the value of a function, substitute the number for the variable and do the arithmetic.

  f(x) = -2x^2 +x -5 . . . . . . given

  f(3) = -2(3^2) +(3) -5 . . . . function value for x = 3

  f(3) = -2(9) +3 -5 = -18 +3 -5

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4 0
2 years ago
There is a line through the origin that divides the region bounded by the parabola and the x-axis into two regions with equal ar
jasenka [17]

Using the slope line formula,

The slope of line y = mx is 1.0315.

We have given that,

parabola equation is y = 5x - 3x²

line passing through origin is in the form of y = mx

==> mx = 5x - 3x²

==> 3x²+ mx - 5x = 0

==> 3x² + x(m -5) = 0

==> x(3x + (m -5)) = 0

==> x = 0 , x = (5 -m)/3

The total area of the bounded region is then the integral of 5x - 3x² from x = 0 to x = (5-m)/3

Area under y = 5x - 3x2 and y = mx is (125/54)/2 = 125/108

==> [0 to (5 -m)/3] ∫(5x - 3x²-mx )dx = 125/108

==> [0 to (5 -m)/3]∫( (5 - m)x - 3x2 )dx = 125/108

==> [0 to (5 -m)/3] ((5 - m)x²/2 - x³ )= 125/108

==> (5 - m)[(5 -m)/3]²/2 - ((5 -m)/3)³ = 125/108

==> (5 -m)³/18 - (5 -m)³/27 = 125/108

==> (5 -m)³/54 = 125/108

==> (5 -m)³ = 125/2

==> (5 -m) = 3.9685

==> m = 5 - 3.9685

==> m = 1.0315

Hence slope of line = 1.0315

To learn more about slope of line , refer:

brainly.com/question/29044610

#SPJ4

5 0
1 year ago
Select the 2 numbers that are between 0.15 and 1.4,<br><br>1.39<br>1.8<br>-0.13<br>-1.2<br>1.75<br>​
Sedaia [141]

Answer:

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Step-by-step explanation:

6 0
3 years ago
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(a).

Simplify the expression to obtain the value at missing place.

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Simplify the expression to obtain the value of missing place.

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Blank space : 7

(C)

Simplify the expression to obtain the value at missing place.

\begin{gathered} \log _74=\log _7(2)^2 \\ =2\log _72 \end{gathered}

Blank space: 2

8 0
1 year ago
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