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3 years ago

7

Num supermercado, 200g de queijo e 300g de presunto custam juntos R$ 9,00. Renan resolveu comprar 400g de queijo e 400g de presu

nto e pagou R$ 14,00. Qual o preço, em reais, do quilograma do presunto?
(A) 1,50 (B) 2,00 (C) 14,00 (D) 15,00 (E) 20,00

1 answer:

nikklg [1K]3 years ago

7 0

The answer to this question is d

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rusak2 [61]

Answer:

D. -19/2

Step-by-step explanation:

Well, we know that R is greater than Y and that at the midpoint, R is 10.5, so Y can't be greater than this (c, 13) and that it isn't the same (b, 10.5). It could either be -8 or -19/2 (which is -9.5). Being that your first coordinate is in fraction form, the second one would also have the be, making the answer D. -19/2

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2 years ago

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frutty [35]

For 5 sodas sold, there are 9 teas sold

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3 years ago

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Dmitrij [34]

Answer:

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2 years ago

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What is the equation of the following line?

Irina18 [472]

Answer:

Y=5x

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2 years ago

If one bag of grass seed will cover 225 square feet, what is the minimum number of bags the haney family will need to cover thei

Veronika [31]

Answer:

9 bags

Step-by-step explanation:

First we will need to calculate the area of their entire backyard, which has a shape of trapezium.

So the formula for the area of a trapezium is $A=\frac{(a+b)*h}{2}$

a and b are the lenghts of the parallel sides and h is the height.

From the picture $a=10*5=50\\b=9*5=45\\h=8*5=40$

Then we plug into our formula

$A=\frac{(a+b)*h}{2} =\frac{(50+45)*40}{2} = 1200$ square feet

To get the number of bags required we just simply divide the aree of their entire yard by the space that 1 bag covers. We get:

$\frac{1900}{225} =8.444...$ bags

This is more than 8 bags so they will need 9 bags to cover their entire yard.

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3 years ago