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Alenkasestr [34]
3 years ago
5

1) Marcos deseja comprar uma guitarra. Seu amigo possui um e quer vender a vista por R$850,00. Caso Marcos prefira, pode parcela

r em 4 parcelas iguais, com vencimento para 30, 60, 90 e 120 dias, seu amigo aplicará sobre o valor do produto, uma taxa única de 12%. Nessa situação, o custo final da guitarra e o valor de cada parcela são respectivamente: *
1 ponto
a) R$102,00 e R$55,00.
b) R$850,00 e R$212,00
c) R$952,00 e R$238,00
d) R$980,00 e R$245,00.
2) Luiza está em dúvida sobre financiar uma moto nova no valor de R$25.000,00 ou fazer um consórcio. Como o desejo de Luiza em adquirir uma moto é algo que tem a mais de dois anos, ela já dispõe de uma reserva, aplicada na caderneta de poupança, de R$15.000,00. As propostas que lhe foram apresentadas na concessionária são: Financiamento de 36 prestações fixas de R$1.050,00 sem entrada.Financiamento de 36 prestações fixas de R$395,00 com entrada de R$14.000,00.Consórcio de 36 prestações reajustáveis de acordo com a inflação, sendo a primeira parcela no valor de R$800,00, com possibilidade de obter a moto, ao longo do período do consórcio, por meio de sorteio ou lance.Das opções apresentadas a mais vantajosa para Luiza é: *
1 ponto
a) O consórcio, pois, a prestação não é tão alta e ela ainda terá o valor de suas economias para usar em caso de alguma emergência.
b) O financiamento de 36 prestações fixas de R$1.050,00 sem entrada.
c) O financiamento de 36 prestações de R$395,00 fixas com entrada de R$14.000,00.
d) Todas as propostas são equivalentes, Luiza pode escolher qualquer uma delas.
Mathematics
1 answer:
e-lub [12.9K]3 years ago
3 0

Answer:

1)C

2)C

Step-by-step explanation:

Fiz no Classroom!!!

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frutty [35]

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As we should be guaranteed that she gets the number of socks she obviously must take out around 9 socks as we are taking the worst case scenario where all the socks that come out are the different ones so the ninth sock must match any of the others.

But if we draw three socks obviously the probability is 1/16*1/15*13/14 as we dont want the third one to be same. We can multiply the answer by 3 as it can be in three different orders.

8 0
3 years ago
Find A to the nearest degree if cos A = 0.7660
STALIN [3.7K]

Answer:

A = 40^\circ

Step-by-step explanation:

Use the inverse cosine function.

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A = \cos^{-1} 0.7660

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5 0
3 years ago
Use a double angle identity to rewrite the formula r(Θ)=<img src="https://tex.z-dn.net/?f=1%2F16v%5E2sin%28theta%29cos%28theta%2
Artist 52 [7]

Answer:

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Step-by-step explanation:

Given the expression r(theta) = 1/16v²sinθcosθ

According to double angle of trigonometry identity;

Sin2θ = sin(θ+θ)

Sin2θ = sinθcosθ + cosθsinθ

Sin2θ = 2sinθcosθ

sinθcosθ = sin2θ/2 ... **

Substituting equation ** into the question

1/16v²sinθcosθ = 1/16v²(sin2θ/2)

1/16v²sinθcosθ = 1/2×1/16v²(sin2θ)

1/16v²sinθcosθ = 1/32v²sin2θ

Hence using the double angle identity, the equivalent expression is 1/32v²sin2θ

7 0
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Answer:

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Step-by-step explanation:

This is a critically important question to know the answer to. It is used almost every day by good shoppers.

The trick is to get everything down to 1 pound.

$2.00

$2.00 per pound. The question is the answer.

$4.25

$4.25 / 2 pounds = $2.13 rounded.

$9.50

$9.50 / 5 = $1.90

$20

$20/12 = $1.67 rounded

8 0
3 years ago
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