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yKpoI14uk [10]
2 years ago
5

12d 14:16:08

Mathematics
1 answer:
GREYUIT [131]2 years ago
5 0

Montando uma expressão para a situação, tem-se que Pedro recebeu 3y - 45 de troco.

----------------

  • O preço total do produto comprado por Pedro é de 45 reais.
  • Pedro pagou em 3 notas de y reais, ou seja, o valor do pagamento é de 3y.
  • O troco é dado pelo excedente do pagamento em relação ao preço total, ou seja, a subtração de 3y por 45.
  • Ou seja, a expressão que representa o troco é: 3y - 45.

Um problema similar é dado em brainly.com/question/21496824

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Answer:

oye me puedes ayudar a mi tarea

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5 0
2 years ago
-6(2+n) is greater than 72
Hitman42 [59]

Answer:

n > -14

Step-by-step explanation:

Firstly, you use the distributive property;

-12 - 6n > 72

Then, since 12 is negative, you add 12 to both sides;

-12 - 6n > 72

+12           +12

-6n > 84

Then you divide both sides by -6 to get n > -14.


Shoot, hold on; this is an edit; did you mean that 72 is greater than -6(2 + n) or did you accidentally flip the sign in the picture? Hopefully I did what you needed.


5 0
2 years ago
Read 2 more answers
A northbound bus and a southbound bus are at a bus stop at the same time. The northbound bus returns to the bus stop every 20 mi
gulaghasi [49]

The question is essentially asking for the least common multiple of 20 and 25. There are several ways you can find the LCM. One easy way is to divide the product by the GCD (greatest common divisor).

GCD(20, 25) = 5 . . . . . see below for a way to find this, if you don't already know

LCM(20, 25) = 20×25/GCD(20, 25)

... = 500/5 = 100

The buses will be there together again after ...

... B. 100 minutes

_____

You can also look at the factors of the numbers:

... 20 = 2²×5

... 25 = 5²

The least common multiple must have factors that include all of these*, so must be ...

... 2²×5² = 100

___

* you can describe the LCM as the product of the unique factors to their highest powers. 20 has 2 raised to the 2nd power. 25 has 5 raised to the 2nd power, which is a higher power of 5 than is present in the factorization of 20. Hence the LCM must have 2² and 5² as factors.

_____

You can also look at the factorization of 20 and 25 to see that 5 is the only factor they have in common. That is the GCD, sometimes called the GCF (greatest common factor).

4 0
3 years ago
Read 2 more answers
Brad wants to open a new savings account. He finds one that returns 3% on his investment each year.
Damm [24]

Answer:

1.03x

Step-by-step explanation:

1 year b would be the inital investment added with interest

i believe this is the equation

b = x + r(x)= (1 + r)x

and since it says 3% each year we know its 0.03 (r)

and when you solve it out you get that answer

4 0
3 years ago
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What is the correct use of the Distributive Property of −4(32x−12)=−15
ladessa [460]
Answer is 63/128
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