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yulyashka [42]
3 years ago
7

How do you find the area of a polygon?

Mathematics
1 answer:
steposvetlana [31]3 years ago
4 0
<span> To </span>find the area<span> of a </span>regular polygon<span>, all you have to do is follow this simple formula: </span>area<span> = 1/2 x perimeter x </span>apothem<span>. Here is what it means: Perimeter = the sum of the lengths of all the sides.</span>
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Ok so use your fingers you have ten and take five away from your fingers or you can us a calculator but the answer is 5
3 0
2 years ago
The difference between two numbers is 2 and their product is 224. What are the numbers?
Sati [7]

Let x,y be the two numbers. We have two pieces of information:

x-y=2 (the difference between the two numbers is 2)

xy=224 (their product is 224)

From the first equation, we can deduce x=y+2

If we plug this expression in the second equation, we have

xy = (y+2)y = 224 \iff y^2+2y-224 =0

If you solve this equation with the usual quadratic formula you get the solutions

y=-16,\quad y=14

So, you have the following couple of solutions, recalling that x is 2 more than y:

\begin{cases} x = -14\\y=-16\end{cases},\quad\begin{cases} x = 16\\y=14\end{cases}

4 0
3 years ago
The formula below, Newton's law of cooling, allows us to calculate the temperature of an object as it cools. T = R + (T0 − R)e-k
trasher [3.6K]
The Newton`s law of cooling:
T = R + ( To - R ) * e ^(-kt )
We know that: T = 32° F ( the water freezes at 32° F ), To = 55° F, R = 5° F
and the cooling rate is:  k = 0.012.
33° F = 5° F + ( 55° F - 5° F ) · 2.72^(-0.012 t )
33 - 5 = 50 · 2.72^(-0.012 t)
27 = 50 · 2.72^(-0.012 t)
2.72^(-0.012 t) = 27/50
1 / 2.72^(0.012 t) = 0.54
2.72^( 0.012 t ) = 1 : 0.54 = 1.85
0.012 t = log(base e) 1.85 = ln 1.85 = 0.6
t = 0.6 : 0.012 = 50
Answer: It would take 50 minutes.
 

7 0
3 years ago
Read 2 more answers
Which statement is true regarding the graphed functions?
Novosadov [1.4K]
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4 0
2 years ago
Use the parabola you graph the quadratic function y = x^2 + 4x + 5 graph the parabola by first plotting its vertex and then plot
SVETLANKA909090 [29]

Answer:

Vertex : (-2,1)

other points : (0,5) & (-4,5)

Step-by-step explanation:

6 0
2 years ago
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