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Lady bird [3.3K]
3 years ago
6

A dragon was tamed by Dumbledore to guard his home. The dragon guarded the home on the condition that Dumbledore feed him 4 piec

es of meat for every 10 hours. If one cow provides 10 pieces of meat, what is the smallest whole number of cows Dumbledore needs to guard his home for 1 month (30 days)?
Mathematics
2 answers:
morpeh [17]3 years ago
4 0

Answer: 29 cows

Step-by-step explanation:

First we need to know how many pieces of meat will be needed. But before that, we need to know how many hours are in these 30 days. 24 hours per day so, 30*24=720 hours. 720 hours and 4 pieces of meat per 10 of those hours. We can do 720/10=72, then, 72*4=288. That means we need 288 pieces of meat, if each cow gives you ten, then we can round 288 to the nearest ten which is 290, then, 290/10 is 29. This means that Dumbledore needs 29 whole cows.

<em>(Yer a wizard Harry)</em>

iren [92.7K]3 years ago
3 0

Answer:

29

Step-by-step explanation:

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Which ordered pairs are in a proportional relationship with (0.2, 0.3)?
MAXImum [283]

Answer:

C and E

Step-by-step explanation:

We are given that

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\frac{y}{x}=\frac{0.3}{0.2}=\frac{3}{2}

k=\frac{y}{x}=\frac{3}{2}

A.x_2=1.2,y_2=2.3

\frac{y_2}{x_2}=\frac{2.3}{1.2}=\frac{23}{12}\neq=\frac{3}{2}

Hence, it is not in proportional relationship with (0.2,0.3)

B.(2.7,4.3)

x_3=2.7,y_3=4.3

\frac{y_3}{x_3}=\frac{4.3}{2.7}=\frac{43}{27}\neq\frac{3}{2}

Hence, it is not in proportional relationship with (0.2,0.3).

C.(3.2,4.8)

x_4=3.2,y_4=4.8

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Hence, the ordered pair (3.2,4.8) are in a proportional relationship with (0.2,0.3).

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\frac{y_5}{x_5}=\frac{5.3}{3.5}=\frac{53}{35}\neq \frac{3}{2}

Hence, the ordered pair (3.5,5.3) are not in a proportional relationship with (0.2,0.3).

E.(5.2,7.8)

\frac{y_6}{x_6}=\frac{7.8}{5.2}=\frac{3}{2}

Hence, the ordered pair (5.2,7.8) are in a proportional relationship with (0.2,0.3).

4 0
3 years ago
I can’t figure this out!! please helppp
krok68 [10]

Answer:

The third answer

Step-by-step explanation:

(side note: You probably need to use a calculator that can calculate pi)

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This is probably going to be rounded

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For all of the circles, this is multiplied by 4.

This is 78.52

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3 years ago
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neonofarm [45]
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