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Sedaia [141]
3 years ago
6

Later, Alexis is looking at a different set of coins: this time only dimes and nickels. She has twice as many nickels as dimes,

and the total value of the coins is $3.20. How many of each coin does she have now?
Mathematics
1 answer:
musickatia [10]3 years ago
5 0

9514 1404 393

Answer:

  • 16 dimes
  • 32 nickels

Step-by-step explanation:

Consider a group of 1 dime and 2 nickels. The value of it is 0.20. The total value of all such groups is 3.20, so there must be ...

  3.20/0.20 = 16 . . . . . groups of coins

That is, there are 16 dimes and 32 nickels.

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The diameter of the dart board is 36 centimeter.what is the approximate circumference
Phoenix [80]

Answer:

36/2= r (r=18)

c=2πr

2x3.14x18=113.04        2xπ= 6.28

Step-by-step explanation:

113.04 centimeters

hope this helps!

8 0
3 years ago
3(x-5)=9 i don't know what to do
Dafna1 [17]

Answer:

x=8

Step-by-step explanation:

3(x-5)=9

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8 0
3 years ago
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A lake initially contains 2000 fish. Suppose that in the absence of predators or other causes of removal, the fish population in
ddd [48]

Answer:

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Step-by-step explanation:

please check the attached files for explanation

4 0
3 years ago
What is the additive inverse of -2 + 8i?
tatuchka [14]

Answer:

2 - 8i

Step-by-step explanation:

The additive inverse of something is basically the opposite of it. Another way to say this is that when you add the additive inverse to -2 + 8i, it will equal 0.

<u>An example:</u>

The additive inverse of 7 is -7 because not only is it the opposite, but also when you add 7 and -7, it equals 0.

<u>To solve</u>

So all you need to do is find the opposite of -2 + 8i. You can write it as:

-(-2 + 8i)  With the negative in the front because we want to find the opposite.

This then equals:

2 - 8i

You can check your answer by adding -2 + 8i and 2 - 8i to see if it equals 0:

(-2 + 8i) + (2 - 8i)  →  and it does equal 0

<u>ANSWER:</u> 2 - 8i

Hope you understand and that this helps with your question! :)

8 0
3 years ago
Which graph is likely to have a leading coefficient value of -1/8?
Harman [31]

Answer:

The second graph: only this one opens downward.

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