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Alina [70]
3 years ago
13

What is the area of the regular pentagon shown below? Round your answer to

Mathematics
2 answers:
inn [45]3 years ago
7 0

Answer:

C. 10 sq units

Step-by-step explanation:

A = (b*h)/2 Use this equation

A = (2.36*1.62)/2 Simplify

A = 3.8232/2 Divide

A = 1.9116*5 Multiply by the number of sides

A = 9.558 which is close to choice C

lianna [129]3 years ago
3 0

Answer:

C. 10 sq. units

Step-by-step explanation:

Area of a pentagon = 1/2 * apothem * perimeter

1/2*(1.62)(2.36*5)=0.81*11.8=9.558

Therefore, about 10 sq. units, or option C.

I hope this helped and have a good rest of your day!

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16 mph is the answer I found after doing the work

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18x^2+21x-9 I need to figure out how to work this problem
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3 years ago
Read 2 more answers
If g(x)= x^2-2x-6 and h(x)= 2x^2-5x+2 find (h-g) (-2)
Natalka [10]

Answer:

<h2>(h - g)( - 2) = 18</h2>

Step-by-step explanation:

g(x) = x² - 2x - 6

h(x) = 2x² - 5x + 2

To find (h-g) (-2) we must first find h - g(x)

To find h - g(x) subtract g(x) from h(x)

We have

<h3>(h - g)(x) =  {2x}^{2}  - 5x + 2 - ( {x}^{2}  - 2x - 6)  \\  =  {2x}^{2}  - 5x + 2 -  {x}^{2}  + 2x + 6 \\  =  {2x}^{2}  -  {x}^{2}  - 5x + 2x + 2 + 6</h3><h3>(h - g)(x) =  {x}^{2}  - 3x + 8</h3>

To find (h-g) (-2) substitute the value of x that's - 2 into (h - g)(x) that's replace every x in (h - g)(x) by - 2

That's

<h3>(h - g)( - 2) =  ({ - 2})^{2}  - 3( - 2) + 8 \\  = 4 + 6 + 8 \\  = 10 + 8</h3>

We have the final answer as

<h3>(h - g)( - 2) = 18</h3>

Hope this helps you

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Which of the following are solutions to the equation below? Check all that apply. 4x2 - 12x + 9 = 5​
Anika [276]

Step-by-step explanation:

4x² - 12x + 9 = 5 → 4x² - 12x + 4 = 0 → x² - 3x + 1 = 0

∆ = b² - 4ac → ∆ = (-3)² -4(1)(1) = 9 - 4 = 5

x = (-(-3) ± √5)/2(1) = (3 ± √5)/2

x² - 3x + 1 = 0 → (x - 3/2)² - 9/4 + 1 = 0 → (x - 3/2)² = 5/4 → x - 3/2 = ±√5 / 2 → x = ½( 3 ± √5)

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3 years ago
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