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sergij07 [2.7K]

2 years ago

11

Which expressions is equivalent to

5E%7B3%7D%20" id="TexFormula1" title="7 {}^{ - 4} \times 7 {}^{3} " alt="7 {}^{ - 4} \times 7 {}^{3} " align="absmiddle" class="latex-formula">

1 answer:

beks73 [17]2 years ago

6 0

Answer:

7⁻⁴×7³ = $\frac{7^{3} }{7^{4} } = \frac{1}{7}$

:)

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Montell is 30 years younger than his mother. in 5 years, montell age will be 1-3 of his mother’s age. find montell mother’s age

Liono4ka [1.6K]

So this can be solve by establish two equation:
let x be age of montell
y be tha age of her mom
for the first equation (<span>Montell is 30 years)</span>:
x = y - 30
second equation ( in 5 years )

x + 5 = ( y + 5 ) ( 1/3)
solving the equation simultaneously

x = 10 years old
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Step-by-step explanation:

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2 years ago

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2 years ago

Fiona y sus amigas fueron a una tienda de batidos. Pidieron tres batidos de fresa y dos batidos de proteínas por un total de $ 2

jeka94

Answer:

Un batido de proteínas cuesta $ 5,25.

Step-by-step explanation:

El sistema de ecuaciones descrito al final del enunciado coincide con lo descrito al comienzo del mismo, de modo que podemos concentraron casi exclusivamente en la resolución del sistema en cuestión, la cual se describe a continuación:

Este es el sistema a resolver:

$x + 4\cdot y = 25,50$ (1)

$3\cdot x + 2\cdot y = 24,00$ (2)

Donde $x$ es el coste de un batido de fresa y $y$ corresponde al coste de un batido de proteínas:

1) Despejamos $x$ en (1):

$x = 25,50 - 4\cdot y$

2) Eliminamos $x$ en (2):

$3\cdot (25,50 - 4\cdot y) + 2\cdot y = 24,00$

$76,50 - 12\cdot y +2\cdot y = 24,00$

3) Simplificamos y despejamos $y$ :

$10\cdot y = 52,50$

$y = 5,25$

Un batido de proteínas cuesta $ 5,25.

7 0

2 years ago