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Marta_Voda [28]
3 years ago
11

Rafiq Jackson’s monthly budget allows him to spend a monthly average of $175 for groceries. In August he spent $85 and in Septem

ber he spent $123. How much more or less did he spend than budgeted for these two months?
Mathematics
2 answers:
tigry1 [53]3 years ago
6 0
175-85=90

175-123=52

90+52=142

in total he spent $142 less than budgeted during those two months
Viktor [21]3 years ago
3 0

Answer:

He spent $142 less than budgeted for these two months

Step-by-step explanation:

Rafiq Jackson’s monthly budget allows him to spend a monthly average of $175 for groceries. In August he spent $85 and in September he spent $123

Monthly average is $175

For 1 month he is allowed to spend 175 dollars

August he spent $85 which is less than monthly average 175

Remaining amount he can spend in August is 175 - 85= 90

September he spent $123 which is less than monthly average 175

Remaining amount he can spend in September is 175 - 123= 52

remaning amount = 90+ 52= 142

He spent $142 less than budgeted for these two months

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2y + 2z

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-3

Step-by-step explanation:

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A line passes through the point (-8,-5) and has a slope of 3/4. Write an equation in point slope form for this line.
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Answer:

y+5 = 3/4(x+8)

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The point slope form of the equation of a line is

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3 0
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Dentro de 11 años, la edad de Federico será la mitad del cuadrado de la que tenía hace 13 años. Calcula la edad de Federico.
Bad White [126]

Plantearemos una ecuación cuadratica, y resolviendola veremos que Federico tiene 21 años.

<h3>¿Como plantear la ecuación que debemos resolver?</h3>

Lo primero que debemos hacer es definir la variable que vamos a usar, en este caso usare:

F = edad de Federico.

Dentro de 11 años, la edad de Federico será:

F + 11

Hace 13 años, la edad de Federico era:

F - 13

Reemplazando eso en lo que el problema plantea, tenemos:

(F + 11) = 0.5*(F - 13)^2

Ahora podemos resolver esto para F.

F + 11  = 0.5*(F^2 - 26*F +169)

F + 11 = 0.5*F^2 - 13*F + 84.5

Movemos todo al mismo lado:

F + 11 - 0.5*F^2 + 13*F - 84.5 = 0

-0.5*F^2 + 14*F - 73.5 = 0

Ahora tenemos una ecuación cuadratica, la cual resolvemos usando la formula de Bhaskara:

F = \frac{-14 \pm \sqrt{(14)^2 - 4*(-0.5)*(-73.5)} }{2*(-0.5)}  =\frac{-14 \pm 7}{-1}

Esto nos da dos valores:

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El problema con el primer valor, es que es inconsistente con el enunciado, ya que en ese caso, Federico hace 13 años tendría una edad negativa. Así que <u>descartamos la primer solución</u> y nos quedamos con la segunda.

F = 21

Federico tiene 21 años.

Sí quieres aprender más sobre ecuaciones cuadraticas, puedes leer:

brainly.com/question/17102578

7 0
2 years ago
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