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n200080 [17]
3 years ago
9

60 points! Mhanifa please help I don’t want people to continue putting random answers!! Random answers will be reported!!

Mathematics
1 answer:
zepelin [54]3 years ago
4 0

Answer:

yes the is enough imformation because of the tick marks

Step-by-step explanation:

Triangle 1. Angle-Side-Angle (ASA) Congruence

Triangle 2. Side-Angle-Side (SAS) Congruence

Triangle 3. Angle-Side-Angle (ASA) Congruence / Side-Angle-Side (SAS) Congruence

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Considere a função de oferta como sendo y= 5x - 1/2 e a função de demanda como sendo y= -7x + 47/2 , onde x é a quantidade e y é
swat32

A) Temos que igualar isso a 2,50, que é o valor de y, ou seja, o valor do preço. Façamos isso, então, na função de demanda.

y = -7x + \frac{47}{2}

Substituir.

2,50 = - 7x + \frac{47}{2}

Passar o que é x de um lado e o que é número do outro lado.

-7x  = - \frac{47}{2} + 2,50

A fração 47/2 corresponde a 23,5. É mais interessante para nós, nesse caso, utilizar o valor decimal.

-7x  = - 23,5 + 2,50

Somar logo.

-7x = -21

Podemos multiplicar por -1 para tirar os sinais negativos.

7x = 21

Passar o x dividindo

x = \frac{21}{7}

Dividir

\boxed{x = 3}

Para um preço de R$ 2,50, a quantidade demandada é de 3 unidades.



B) Basta igualar as duas formulinhas.

5x - \frac{1}{2} = -7x + \frac{47}{2}

Passar o que é x de um lado e o que é número do outro lado.

5x + 7x = \frac{47}{2} + \frac{1}{2}

Somar tudo. Como as frações têm o mesmo denominador, <u>nada de </u><u>mmc</u>! Basta somar os numeradores.

12x = \frac{48}{2}

Podemos dividir lá, olha:

12x = 24

Passar o x dividindo

x = \frac{24}{12}

Dividir

\boxed{x = 2}

O ponto de equilíbrio é o valor 2.



C) Basta, então, igualar as fórmulas da oferta e da demanda a 10.

Fórmula da oferta

10 = 5x - \frac{1}{2}

Passar o que é x de um lado e o que é número do outro lado.

5x = 10 - \frac{1}{2}

Se 1/2 = 0,5, dá pra resolver sem fazer mmc:

5x = 10 - 0,5

Subtrair

5x = 9,5

Passar dividindo

x = \frac{9,5}{5}

Dividir.

\boxed{x = 1,9}

Fórmula da demanda

10 = -7x + \frac{47}{2}

Passar o que é x de um lado e o que é número do outro lado.

-7x = \frac{47}{2} - 10

Divide 47/2, vai.

-7x = 23,5 - 10

Subtrair.

-7x = 13,5

Passar o 7 dividindo.

x = - \frac{13,5}{7}

Vamos dividir e transformar em decimal.

\boxed{x = -1,9285714285714285714285714285714}


Subtrair a oferta pela demanda.

x = 1,9 - (-1,9285714285714285714285714285714)

Subtrair.

\boxed{x = 3,8285714285714285714285714285714}

Arredondando, o preço será de R$ 3,83.

8 0
3 years ago
David and Amanda are trying to figure out how long they can live off their $12,350 savings if they spend $240 each month. They h
Romashka [77]
David's : y = 12,350 - (240x)
Amanda's : y = 12,350 + (240x)

David's equation is correct, because their spending will be multiplied by the number of months and then subtracted from their savings


7 0
3 years ago
Read 2 more answers
Change to a mixed number. 13/3
miss Akunina [59]

Answer:

4 and 1/3

Step-by-step explanation:

3 can go into 13 4 times with one left over

my rank is expert

hope this helps

5 0
3 years ago
Is this true? if not what’s the answer asap!
tensa zangetsu [6.8K]

Answer:

(x {}^{ - 4} ) {}^{2} \:  =  \: x {}^{ - 4 \times 2 }   =  \: x {}^{ - 8}  =  \:  \frac{1}{ x {}^{8}  }

4 0
3 years ago
A coffee stand sells cups of coffee for $6 and cups of tea for $3. Tuesday a total of 75 cups were sold and the total money coll
Lorico [155]

Answer:

46 Teas and 29 Coffees

Step-by-step explanation:

46×3= 138

29×6= 174

174+138=312

4 0
3 years ago
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