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4 years ago

I think this is the hardest question But if you solve this you will get 500+ points

Mathematics

2 answers:

elixir [45]4 years ago

8 0

Answer:

Step-by-step explanation:

Let the number of 20cent coins be 'x'

Then, 10cent coins are 'x + 12'

Total amount = $5.4 = 540 cents

20(x) + 10(x + 12) = 540

20x + 10x + 120 = 540

30x = 540 - 120

30x = 420

x = 420/30

x = 14 (14 20cent coins)

x + 12 = 26 (26 10cent coins)

Total coins = 14 + 26 = 40

BRAINLIST

Step-by-step explanation:

blondinia [14]4 years ago

6 0

Answer:

Step-by-step explanation:

Let the number of 20cent coins be 'x'

Then, 10cent coins are 'x + 12'

Total amount = $5.4 = 540 cents

20(x) + 10(x + 12) = 540

20x + 10x + 120 = 540

30x = 540 - 120

30x = 420

x = 420/30

x = 14 (14 20cent coins)

x + 12 = 26 (26 10cent coins)

Total coins = 14 + 26 = 40

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Answer:

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Step-by-step explanation:

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Morgarella [4.7K]

Answer:

(-7, 0) and (7, 0)

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All the points that are 7 units from the origin are on the circle:

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3 years ago

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Estimate the following sum by rounding each number to the nearest 10 plz

Harlamova29_29 [7]

Answer:

184

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3 years ago

betty has a cow.the cow produces 5 liters of milk in a day. if the cows diet is improved the cow will produce 200% more milk.how

DanielleElmas [232]

We can start by setting out what we know simply.

Cow produces 5 liters a day.

The cow can make 200% more.

200% of 5, is 10.

If he makes 200% more, he will make 10 liters more.

He already makes 5.

10+5 is what he will make.

FINAL ANSWER:

"If the cow's diet is improved, the cow will produce 15 liters of milk in a day."

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3 years ago