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N76 [4]
3 years ago
6

ANSWER FOR BRAINLEST

Mathematics
1 answer:
ra1l [238]3 years ago
6 0

Answer:

20π or 62.8

Step-by-step explanation:

Volume of a cone = 1/3πr²h

1/3(π)(2)²9

= 12π or 37.7

Volume of a hemisphere = 2πr²/3

2(π)(2)²

= 8π or 25.1

Total Volume = 20π or 62.8

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(Geometry HELP) The perimeter of WXY is ___ cm?
jeka57 [31]
I hope this helps you



QR=WS=2.93



RS=QW =2.04


QS=XR =2.28


RS=XQ=2.04



SY=QR =2.93


RY=QS =2.28


XY=XR+RY=2.28+2.28=4.56


XW=XQ+QW=2.04+2.04=4.08


WY=WS+SY=2.93+2.93=5.86


Perimeter of XYW=XW+WY+XY


Perimeter of XYW=4.08+5.86+4.56


Perimeter of XYW =14.5


8 0
3 years ago
Find the coordinates for point R that proves figure TRAP is an isosceles trapezoid.
Lilit [14]

Answer:b

Step-by-step explanation: I got it right on my test

4 0
2 years ago
Read 2 more answers
Suppose DK is an angle bisector of △DEF. Given: EK=2, FK=5, DF=10. Find DE.
Inessa [10]

Answer:

  DE = 4

Step-by-step explanation:

The bisector divides the triangle into proportional segments, so ...

  FK/DF = EK/DE

  5/10 = 2/DE . . . . substitute given values

  DE = 4 . . . . . multiply by 2DE

8 0
3 years ago
Write the form of the partial fraction decomposition of the function. Do not determine the numerical values of the coefficients.
Gnoma [55]

Answer:

\frac{A}{(x-1)} + \frac{B}{(x-9)}

Step-by-step explanation:

Given the expression \dfrac{1}{(x-1)(x-9)}, we are to write the expression as a partial fraction. Writing as a partial fraction means rewriting the expression a s a sum of two or more expression.

Before we will do this we will need to check the nature of the function at the denominator whether it is linear, quadratic or a repeated function. According to the question, the denominator at the denominator is a linear function and since it is a linear function, we can separate both linear function without restriction as shown;

\dfrac{1}{(x-1)(x-9)} = \frac{A}{(x-1)} + \frac{B}{(x-9)} where A and B are the unknown constant which are numerical values.

4 0
2 years ago
A lighthouse is located at (1, 2) in a coordinate system measured in miles. a sailboat starts at (–7, 8) and sails in a positive
schepotkina [342]

The system of equations that can be used to determine whether the boat comes within 5 miles of the lighthouse is:

  • y = (2/7)(x - 2)^2 - 6
  • (x - 1)^2 + (y - 2)^2 = 5^2

<h3>What are equations?</h3>
  • The equation is described as the state of being equal and is commonly represented as a math expression with equal values on either side, or it refers to an issue in which many factors must be considered.
  • 2+2 = 3+1 is an example of an equation.

To find the system of equations that can be used to determine whether the boat comes within 5 miles of the lighthouse:

The vertex form of a quadratic function is given by: f(x) = a(x - h)^2 + k

Where (h, k) is the vertex of the parabola, a is constant.

For the sailboat we have vertex: (h, k) = (2, -6) and one point: (-7, 8) that is f(-7) = 8.

  • f(x) = a(x - 2)^2 - 6

We will find a using f(-7) = 8:

  • f(-7) = a(-7-2)^2 - 6
  • f(-7) = 49a - 6
  • 49a - 6 = 8
  • 49a = 14
  • a = 14/49
  • a = 2/7

The quadratic function for the sailboat is given by:

  • f(x) = (2/7)(x - 2)^2 - 6 or y = (2/7)(x - 2)^2 - 6

The equation for a circle with a radius of 5 and center (1, 2) is:

  • (x - 1)^2 + (y - 2)^2 = 5^2

Therefore, the system of equations that can be used to determine whether the boat comes within 5 miles of the lighthouse is:

  • y = (2/7)(x - 2)^2 - 6
  • (x - 1)^2 + (y - 2)^2 = 5^2

Know more about equations here:
brainly.com/question/22688504

#SPJ4

The correct form of the question is given below:
A lighthouse is located at (1, 2) in a coordinate system measured in miles. a sailboat starts at (–7, 8) and sails in a positive x-direction along a path that can be modeled by a quadratic function with a vertex at (2, –6). which system of equations can be used to determine whether the boat comes within 5 miles of the lighthouse?

4 0
10 months ago
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