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guapka [62]
4 years ago
13

2-86. Simplify the expression

Mathematics
1 answer:
ycow [4]4 years ago
6 0
Are those answer options or are they what you need simplified? What is the "2-86"?
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1- Un avión se desplaza a 720 km/h.¿Que tiempo tarda en recorrer 120.000.000 cm?
Ostrovityanka [42]

Answer:

Step-by-step explanation:

1- Un avión se desplaza a 720 km/h.¿Que tiempo tarda en recorrer 120.000.000 cm?

x = 120.000.000 cm = 1200.000 m (Dividir para 100)

v = 720 km/h = 200 m / s (Dividir para 3,6)

x = v*t

t = x / v

t = 12000000 / 200

t = 6000 segundos = 100 minutos = 1 hora 40 minutos

2-Un auto recorre 430 km en 6 h 30 min 18 s.¿Cual es su velocidad en km/h?

x = 430 Km = 430000 m

t = 6 h 30m 18 s

t = 6 * 3600 + 30 * 60 + 18

t = 21798 s

v = x / t

v = 430000 / 21798

v = 19,72 m/s = 71 km/h (Multiplica por 3,6)

3-Una moto se desplaza a 144 km/h durante 820 min. calcular la distancia recorrida

v = 144 km/s = 40 m/s

t = 820 min * 60 = 49200 s

x = v*t

x = 40 * 49200

x = 1968000 m = 1968 Km

4-un atleta corre a 9 m/s.¿Cuanto tiempo tarda en recorrer 10,9 Km?

v = 9 m/s

x = 10,9 km = 10900 m

t = x / v

t = 10900 / 9

t = 1211,11 s = 20 minutos 11 segundos

5 0
3 years ago
Choose the point-slope form of the equation below that represents the line that passes through the point (6, −3) and has a slope
vichka [17]
 The equation of this line is y - (-3) = (1/2)( x - 6 ), <span>which is equivalent to y + 3</span> = (1/2)( x - 6 );

5 0
3 years ago
Find CE if AE = 8 and BC = 3. Round to the nearest tenth. AE is tangent to the circle. (Hint: May need quadratic formula)
boyakko [2]

The value of CE = 18.3

According to the statement

Here we have given the value of tangents AE = 8 and BC = 3

we have to find the value of CE and

It is given that AE is the tangent to the circle.

Now we make a equation to find the CE then

(8)^2 = 3(x+3)

In this equation the value of AE is 8. and

In this x is the value of CE and BC have value 3.

And the total value of BE becomes the 3(x+3) and 3 is the parts by which  BE is formed.

Then solve the equation

64= 3x +9

3x = 64-9

x = 18.3

So, The value of CE = 18.3

Learn more about TANGENT here brainly.com/question/17040970

#SPJ1

7 0
2 years ago
Round each number to the nearest tenth, the numbers are 73.129 and 73.184
Sever21 [200]
73.129 is 73.1 and 73.184 is 73.2.
3 0
3 years ago
Read 2 more answers
Pls help due today I will Give crown
bezimeni [28]

Answer: C

Step-by-step explanation:

Crown?

6 0
3 years ago
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