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solmaris [256]
3 years ago
6

The sum of two positive integers, a and b, is at least 30. The difference of the two integers is at least 10. If b is the greate

r
integer, which system of inequalities could represent the values of a and b?
O a + b 2 30 b2a + 10
O a + b 2 30 bsa - 10
O a + b s 30b2a + 10
O a + b = 30 bsa-10
Mathematics
2 answers:
spayn [35]3 years ago
4 0
A + b s 30b2a yw



Why?
Because it is
vlabodo [156]3 years ago
3 0

Answer:

ITS A

Step-by-step explanation:

TOOK TEST

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The equation of line u is y = 9/2x+1. Line v is perpendicular to u. What is the slope of line v
lukranit [14]

Answer:

Step-by-step explanation:

The slope of line u is 9/2; the line perpendicular to that is the opposite reciprocal...opposite sign and the flip of the fraction. The perpendicular slope is -2/9

5 0
3 years ago
13. En un pueblo, 5 personas escucharon una noticia. En una hora, cada una de ellas
Vera_Pavlovna [14]

Answer:

En 5 horas se habrá enterado todo el pueblo.

Step-by-step explanation:

Sabemos que en un pueblo 5 personas escucharon una noticia.

Una hora más tarde, cada una de ellas le contó la noticia a otras 5.

Luego, éstas contaron la noticia a otras 5 y así sucesivamente.

Nadie cuenta ni escucha la noticia más de una vez y en ese pueblo hay un poco más de 19000 habitantes.

La ecuación a desarrollar para resolver el problema es la siguiente :

Comenzamos con 5 personas que escucharon la noticia a la ''hora 0''.

Una hora más tarde, cada una de ellas le contó a 5 personas, es decir , pasada la primera hora tendremos :

5+5^{2}=30 (I)

Las 5 personas originales de la ''hora 0'' más 25 personas que se enteraron pasada la primera hora. La ecuación que planteamos es la siguiente :

5^{1}+5^{2}+5^{3}+...+5^{x}>19000 (II)

Buscamos el valor de x que satisface la ecuación (II).

Probando y realizando las sumas encontramos que :

5^{1}+5^{2}+5^{3}+5^{4}+5^{5}+5^{6}>19000

19530>19000

El valor de x que satisface (II) es x=6.

Para hallar el número de horas nos fijamos que en (I) el valor del mayor exponente del 5 es el número 2. Para ese valor 2, el tiempo que pasó es una hora.

Entonces para nuestro x=6, el número de horas que pasaron son 5 horas (1 menos que el valor de x)

Todo el pueblo se habrá enterado en 5 horas de la noticia.

7 0
3 years ago
Can u help me I have 2 minutes to do this
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Answer:

0.2, 0.6,0.25,0.75,0.82

Step-by-step explanation:

so you u have to do it put least to greatest

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Answer:

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Step-by-step explanation:

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