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Andreyy89
3 years ago
14

Washing powder cost 12.87 for 9 kg. hwo much does 1 kg cost to the nearst cent

Mathematics
2 answers:
Goryan [66]3 years ago
5 0

Answer:

hard

Step-by-step explanation:

I don't know because I have never learnt these things

Sav [38]3 years ago
4 0

Answer:

1.43

Step-by-step explanation:

9kg -------> 12.87

1kg ---------> x

let the unknown number be x

9 = 12.87 \\ 1 = x \\ use \:  \: cross \:  \: multipication \\ 9x = 12.87 \\  \frac{9x}{9}  =  \frac{12.87}{9}  \\ x = 1.43

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2 of Caroline's marbles are blue.

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You can walk 3 miles per hour, jog 5 miles per hour, or run 10 miles per hour. You go a full hour before changing pace. At the e
Studentka2010 [4]

Answer:

b. How many ways arc there to go 12 miles?

≡ p(12) = 25

c. How many ways arc there to go 20 miles?

≡ p(20) = 131

d. How many ways arc there to go 22 miles?

≡p(22)  199

Step-by-step explanation:

a) supposed you walked for the first hour. Then you would have travelled 3 miles. if you jogged you would have covered 5miles and if you run you would have covered 10miles. now you have to decide how to run the rest miles from the n miles.

Thus, the number of ways one can cover n miles will be given by the recurrence relation

p(n) = p( n-3) + p( n-5) + p( n - 10)

now to solve the rest of the question, let us make a table which provides the number of ways for n = 1  to 22.

check the attachment for the table

b. How many ways arc there to go 12 miles?

≡ p(12) = 25

c. How many ways arc there to go 20 miles?

≡ p(20) = 131

d. How many ways arc there to go 22 miles?

≡p(22)  199

8 0
3 years ago
A comet is about 9.6 x 107 km from
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Answer:

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Step-by-step explanation:

9.6 x 10⁷ / 3.0 x 10⁵

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Since a Pythagorean triple is three positive integers a, b, and c such that (a^2)+(b^2)=(c^2), where a and b are the two legs, and c is the hypotenuse, first take the sum of the squares of the two legs and make an estimate. For example, 3, 4, and 5 is a Pythagorean triple since 9+16=25.

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Allison had 12 apples in the refrigerator. Her mother went to the grocery store and bought a bag with 24 apples and 12 oranges i
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