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olga_2 [115]
3 years ago
6

Modern medical advances might mean people could live 200 years. In 2009 the life expectancy is about 80 years. Assume that due t

o modern advances life expectancy gains 5.1 years every decade. From 2009 in how many years would humanity achieve a life expectancy of 130 years?
Mathematics
1 answer:
bezimeni [28]3 years ago
5 0

Answer:

Answer: In year 2107 life expectancy will be 130 years

Step-by-step explanation:

First we understand which are the things given in the question.

In every decade life expectancy gains over 5.1 years.

Current life expectancy is about 80 years.

We have to calculate in how many decades life expectancy will increase from 80 years to 130 years which means increase of 50 years.

So from unitary method we can do the calculations.

∵ 5.1 years of life expectancy increases = in one decade

∴ 1 year of life expectancy will increase in = \frac{1}{5.1} decades

∴ 50 years of life expectancy will increase in =\frac{1}{5.1}×50 decades

                                                               =\frac{50}{5.1} = 9.8 decades

                                                              or 9.8×10 years = 98 years

Therefore 130 years life expectancy will be in in year 2009+98 years =2107

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El Papa de blanca destino la tercera parte de su salario quincenal para comprar alimentos y la mitad para pagos diversos si le s
kherson [118]

Answer:

El papá de Blanca gasta $1,000 de su sueldo en alimentos.

Step-by-step explanation:

En primer lugar, se designa a la letra S como la cantidad total del salario de la persona.

Sabiendo que el papá de Blanca destina la tercera parte de su salario para comprar alimentos, y que la tercera parte de un número es la división de ese número entre tres, entonces se tiene la expresión:

Alimentos: A=\frac{S}{3} =\frac{1}{3} *S

Ahora sabes que el papá de Blanca destina la mitad de su salario en diversos gastos, y siendo la mitad de un número es la división de ese número entre dos, se obtiene la expresión:

Gastos: G=\frac{S}{2} =\frac{1}{2} S

El papá de Blanca gasta su salario en alimentos y en otros gastos y le sobran $ 500. Esto es expresado mediante:

Alimentos + Gastos + 500 = Salario

Entonces:

A + G + 500 = S

Sustituyendo A y G:

\frac{1}{3} S+\frac{1}{2} S+500=S

Resolviendo:

\frac{5}{6} S+500=S

500=S- \frac{5}{6} S

500= \frac{1}{6} S

\frac{500}{\frac{1}{6} } =S

3,000= S

Entonces el salario del papá de Blanca es de $ 3,000

Reemplazando este valor para el cálculo de su gasto en alimentos es:

A=\frac{1}{3} *S= \frac{1}{3}* 3,000

A= 1,000

<em><u>El papá de Blanca gasta $1,000 de su sueldo en alimentos.</u></em>

6 0
3 years ago
Suppose Jane's mother replaces the six bags of trail mix. She also provides the group with 18 cans of juice. Each snack pack has
stepan [7]

Answer:

six[6] snack packs.

Step-by-step explanation:

Without mixing words, let's dive straight into the solution to the question above. So. the mathematics principle behind this question is what is known or refer to as Greatest Common Factor. The term ''Greatest Common Factor'' with acronym GCF means the highest factor in the set of numbers given.

In this question, we are given that there are 18 cans of juice, 24 apples and 36 small bags of mix trails in order to make snack packs. Thus, we have three set of values or numbers that is 18, 24 and 36. Hence, the question/problem require us to determine the greatest number of snack packs Jane can make that is to find/determine the  Greatest Common Factor.

STEP ONE: DETERMINE OR LIST OUT THE FACTORS FOR THE THREE SET OF VALUES GIVEN, THAT IS 18, 24 AND 36.

The  factors of 18 = 1, 2, 3, 6, 9 and 18.

The factors of 24 = 1, 2, 3, 4, 6, 8, 12, and 24.

The factors of 36 = 1, 2, 3, 4, 6, 9, 12, 18,  and 36.

STEP TWO: DETERMINE THE GREATEST FACTOR COMMON TO THE THREE LISTS.

For the three lists, the greatest factor common to them is 6.

Therefore, The greatest number of snack packs Jane can make is six[6] snack packs

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3 years ago
Help pls. What is the factor of: 12p^2 + 20p - 8
garik1379 [7]
I got 3 when i put it into the calculator but you can check behind me
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3 years ago
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Answer:

a. 2

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Step-by-step explanation:

When the funtion h(x) is at 0, or h(0), the y value is visibly shown to be at 2. When the function's y-value is at -2, you need to find the x values which make that the case. You can see that at x=-1, the y value is at -2, making this our first value. You can also see the function meet -2 when x =2, making this the second value. Hope this helps!

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