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Sindrei [870]
3 years ago
8

Cuánto es (-12) - 21 = Explicación del pq da a ese resultado, por favor.​

Mathematics
2 answers:
dezoksy [38]3 years ago
8 0

Answer:

Step-by-step explanation:

(-12)-21= -33. Tienes q sumar porque son del mismo signo y se queda con el signo de negativo por que ambos números son negativos.

Gelneren [198K]3 years ago
7 0

Answer:

the answer is -33 srry couldn't explain :(

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inn [45]

Answer:

(2,4) I hope this helps :))

3 0
2 years ago
What is the sum of the interior angles of the polygon shown below?
Yanka [14]

Answer:

540 degrees

Step-by-step explanation:

The formula to find the sum of interior angles in any polygon is the following:

S=180(n-2)

Where (n) represents the number of sides in the polygon. In this case, the polygon has (5) sides, therefore substitute (5) in place of (n) and solve;

S=180(n-2)\\\\S=180(5-2)\\\\S=180(3)\\\\S=540

4 0
3 years ago
Find VALUE X<br> PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
amm1812

Answer:

20

Step-by-step explanation:

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8 0
2 years ago
You have 800 feet of fencing and you want to make two fenced in enclosures by splitting one enclosure in half. What are the larg
katovenus [111]
Problema Solution

You have 800 feet of fencing and you want to make two fenced in enclosures by splitting one enclosure in half. What are the largest dimensions of this enclosure that you could build?

Answer provided by our tutors

Make a drawing and denote:


x = half of the length of the enclosure


2x = the length of the enclosure


y = the width of the enclosure


P = 800 ft the perimeter


The perimeter of the two enclosures can be expressed P = 4x + 2y thus


4x + 3y = 800


Solving for y:

........

click here to see all the equation solution steps

........

y = 800/3 - 4x/3


The area of the two enclosure is A = 2xy.


Substituting y = 800/3 - 4x/3 in A = 2xy we get


A = 2x(800/3 - 4x/3)


A =1600x/3 - 8x^2/3


We need to find the x for which the parabolic function A = (- 8/3)x^2 + (1600/3)x has maximum: 


x max = -b/2a, a = (-8/3), b = 1600/3


x max = (-1600/3)/(2*(-8/3))


x max = 100 ft


y = 800/3 - 4*100/3


y = 133.33 ft


2x = 2*100


2x = 200 ft

3 0
3 years ago
if you throw a rubber ball toward the ground at an angle, it will bounce up feom the ground at the same angle. find the unknown
Sauron [17]
30°

A strait line is 180°
75°+75°=150°
180°-150°=30°
5 0
3 years ago
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