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kvv77 [185]
3 years ago
10

Forty-five states in a country have​ four-star hotels. Assume the country has 50 states.​ (a) What fraction of the states can cl

aim at least one​ four-star hotel?​ (b) How many states do not have a​ four-star hotel?​ (c) Write the fraction of states without a​ four-star hotel.
Mathematics
1 answer:
Masteriza [31]3 years ago
6 0
A. 90% b. 5 c. 10/100 or 5/50 or 1/10
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El ingreso de una empresa de construcción de obras civiles se estima a través del tiempo de acuerdo con la siguiente función I(t
brilliants [131]

Usando conceptos de funciones cuadráticas, se encuentra que:

  • El máximo ingreso será alcanzado en 6 años.
  • El máximo ingreso será de 800 miles de soles.

La función que estimate el tiempo es dada por:

I(t) = -64 + 288t - 24t^2

Que es una función cuadrática con coeficientes a = -24, b = 288, c = -64.

El año en qué se alcanzará el máximo ingreso es el <u>valor de t de el vertice</u>, o sea:

t_V = -\frac{b}{2a} = -\frac{288}{2(-24)} = \frac{288}{48} = 6

El máximo ingreso será alcanzado en 6 años.

El valor del máximo ingreso es el valor de <u>I de el vertice</u>, o sea:

I_v = -\frac{\Delta}{4a} = -\frac{b^2 - 4ac}{4a}

Entonces:

I_v = -\frac{288^2 - 4(-24)(-64)}{4(-24)} = 800

El máximo ingreso será de 800 miles de soles.

Un problema similar es dado en brainly.com/question/21434178

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3 years ago
A fair coin is flipped twice.
Mademuasel [1]

Answer:

d 0.50

Step-by-step explanation: hope it does help

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3 years ago
brainliest goes to whoever answers the question correctly also if you want more points answer my other questions
astra-53 [7]

Answer:

D. All of the above

Step-by-step explanation:

All of those would reach higher than 300 when you go 4 to the right.

8 0
3 years ago
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A circle is dialated with a scale factor of 2/3. what is the area of the new circle if the area of the original circle is 45 squ
Sveta_85 [38]
Original Circle Area = 45

A = pi * r^2

Plug in what we know:

45 = 3.14 * r^2

Divide 3.14 to both sides:

14.3312102 = r^2

Find the square root of both sides:

r = 3.78565849

Find 2/3 of this:

2/3 * 3.78565849 = 2.52377233

So this is the radius of the newly dilated circle.

A = pi * r^2

A = 3.14 * 2.52377233^2

A = 3.14 * 6.36942677

A = 20

So the area of the newly dilated circle is 20 square inches.
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3 years ago
What is the area of a square if s = 8 inches?
asambeis [7]

Answer:

64 ins

Step-by-step explanation:

8*8=64

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