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PIT_PIT [208]
3 years ago
7

The nickles and dimes had a value of $5.75. if there were 70 coins in all, how many were nickles?

Mathematics
1 answer:
Murrr4er [49]3 years ago
5 0

Answer:

25

Step-by-step explanation:

If all 70 were nickels, the value would be $3.50 Since that is 2.25 less, that means it needs 45 more 5 cents. Therefore, you would replace 5 of the nickels with dimes. This means there are 25 nickels and 45 dimes.

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If (m+n)^2=m^2+n^2, what is (3^m)^n?
svp [43]

Answer:

(3^m)^n=1

Step-by-step explanation:

(m+n)^2=m^2+n^2\\m^2+2mn+n^2=m^2+n^2\\(m^2+n^2)-(m^2+n^2)+2mn=0\\2mn=0\\This\ equation\ has\ two\ solutions\ : m=0,n=0\\\\But\ either\ way\ will\ result\ in\ the\  same\ answer.\\If\ m=0\ then,\\(3^0)^n\\=1^n\\=1\\\\If\ n=0 \ then,\\(3^m)^0\\=1

4 0
3 years ago
Sarah rides her bicycle 2.7 miles to school.She takes a different route home,which is 2.5 miles.How many miles does Sarah ride t
adell [148]
5.2 miles to ride to and from school
8 0
3 years ago
Read 2 more answers
If a bookshelf is 28 1/8 inches long,how many 1 7/8 inch thick books will it hold?
kotegsom [21]
I believe the correct answer is 15, because 15/8 x 15/1= 225/8 and when you simplify that you get 28 with 1/8 left over.
7 0
3 years ago
Read 2 more answers
A lotion is made from an oil blend costing $1.50 per ounce and glycerin costing $1.00 per ounce. Four ounces of lotion costs $5.
Svet_ta [14]

Answer:

A (4-g)1.5

Step-by-step explanation:

hope this helps if you need a explanation just ask in the comments and I will.

8 0
3 years ago
please help now it kinda important i get it done soon or i cant go to a dance for my school tomorrow. im begging u ill give u 5
harkovskaia [24]

Answer: 352496

Step-by-step explanation:

First, to find 20% of 440,620, you can multiply:

0.2 x 440,620 = 88,124

Then, to find the new weight of the ship, you can subtract the 20% that was just found (88,124) from the ship's original weight (440,620) to get:

440,620 - 88,124 = 352,496

Therefore, the ship's weight is now 352496.

I hope this helps!

6 0
2 years ago
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