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kow [346]
2 years ago
13

Daniel has 31 coins in nickels and dimes

Mathematics
2 answers:
Ostrovityanka [42]2 years ago
7 0

Answer:

Step-by-step explanation:

First, create the equations below, where N stands for nickels and D stands for dimes.

0.05N +[? ]D = 2.20; N + D = [

+

Remember: A nickel is worth $0.05 and a

dime is worth $0.10.

Artemon [7]2 years ago
5 0
.75 cents be it was easy mathematically
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The circumference of a circle is 257 cm. What is the area,<br> in<br> square<br> centimeters
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3 years ago
How to solve 3(x+1)=5(x-2)+7
igor_vitrenko [27]
So first do 3(x+1) which is 3x+3 because you have to multiply the outside number by the stuff in side the parentheses. Then you do the 5(x-2)+7 and it should be 5x-10+7 so now your equation should be 3x+3=5x-10+7 now subtract the 3x from the 5x and now your equation should look like this: 3=2x-10+7. Then you add the 10 and the 7 so now your equation should look like this: 3=2x-3 because it's a -10 and a positive 7 it would be -3. So then you have to add the -3( which now becomes positive to the other 3 in front of the = sign. So now your equation should look like this: 6=2x. Now divide by 2 to get x by its self and now your answer should be 3=x or x=3.
7 0
3 years ago
WILL CROWN BRAINLIEST, 5/5 RATING, AND LIKE!
Genrish500 [490]

Hey there!

If we have two white marbles and seven purple marbles, our first probability is out of nine.

First of all, we have the probability of selecting a purple marble, 7/9.

Now, if we do not replace it, there are only eight marbles left. Therefore, getting a white marble is 2/8, or 1/4.

We multiply these probabilities together to get our answer to a.

7/9(1/4)= 7/36

a. 7/36

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b. 1/36

Now, let's calculate selecting two purple to help us with C.

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I hope this helps!

4 0
3 years ago
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