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prohojiy [21]
3 years ago
9

FIRST PROPER ANSWER GETS BRAINLIEST ON TEST PLEASE HELP!!!

Mathematics
2 answers:
Irina-Kira [14]3 years ago
8 0
Area of a semicircle = \pi r² / 2 
r= 5/2 = 2.5

So: A= 3.14 x 2.5² / 2  A = 9.8125 so rounding to the nearest hundredth is A=9.81
Alla [95]3 years ago
6 0
Okay, so first you have to understand this:
Since it's a Semicircle, it's half of a circle.
So take half of the Area of the Circle(A= \pi r^2)
Which is (1/2)* (\pi r^2)
So plug in 2.5 for r, which is half of the diameter of 5
You should have this equation: A=3.14*2.5^2
Which is equal to: A=19.625
Lastly you divide that by 2: 19.625/2=9.8125
Final Answer: A=9.81
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Identify the axis of symmetry and vertex of f(x) = –2x2 –2x–1.
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<span>Given the quadratic equation: f(x) = -2x^2 - 2x - 1, the axis of symmetry can be obtained by finding the line that divides the function into two congruent or identical halves. Thus, it should pass through the vertex and is equal to the x-coordinate of the vertex. </span>

<span>Note that a quadratic equation in standard form: y = ax^2 + bx + c, has the vertex located at (h,k) where, h = -b/2a and k is determined by evaluating y at h. In this case, a = -2, b = -2, thus, h = -0.5, k = 0.5. Thus, the vertex is located at (-0.5, 0.5) and the axis of symmetry is at x = -0.5. </span>

4 0
3 years ago
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Charra [1.4K]
The answer for this question is
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7 0
2 years ago
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Set up the equation to find the AREA of the SMALL rectangle with a length of (x) and width (x+7)
Igoryamba

<u>Answer:</u>

<h3>( x ) x ( x + 7 ) </h3>

<u>Step-by-step explanation:</u>

To find the area of a rectangle, we have to multiply the length with the width.

In the question, the given length is 'x' and the width given is 'x +7'

So, the area would be

( x ) x ( x + 7 )

The area = x^{2} + 7x

So, the equation to find the area of such a rectangle would be:-

( x ) x ( x + 7 )

7 0
3 years ago
Your equation:<br><img src="https://tex.z-dn.net/?f=%20%7B3%7D%5E%7B%3F%7D%20%20%5Ctimes%20%20%7B3%7D%5E%7B%3F%7D%20%20%5Cdiv%20
Alisiya [41]
3^1x3^1/3^1=3


Steps

3x1=3
3x1=3
3/3=3

Hope that helps
7 0
3 years ago
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