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s344n2d4d5 [400]
3 years ago
14

Please help get this right please I'm nut sire if it right​

Mathematics
1 answer:
sineoko [7]3 years ago
6 0
Yes this answer is correct -2/3
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Kevin and Randy Muise have a jar containing 70 coins, all of which are either quarters or nickels. The total value of the coins
Nikitich [7]

Answer:

50 nickels, 20 quarters.

Step-by-step explanation:

System of equations (q = # of quarters, n = # of nickels):

<em>q + n = 70, 0.25q + 0.05n = 7.50</em>

the first equation can be changed to q = 70 - n, so we are able to <em>substitute q with 70 - n</em>.

So, it will look like <em>0.25*70 - 0.25n + 0.05n = 7.50</em>. This can be simplified to <em>0.2n = 10</em>, which means that n = 50.

Knowing that we can solve <em>q + 50 = 70</em>, which means that q = 20.

6 0
4 years ago
Jim has a bank account balance of −$15.46. As soon as he realizes this, he deposits $25.50 in the account.
k0ka [10]

Answer:

$10.04

Step-by-step explanation:

-15.46+25.50

equals

25.50-15.46

4 0
3 years ago
Read 2 more answers
Friend of mine needs an explanation of this problem.
horsena [70]
Hope u find some help
8 0
3 years ago
Decimal multiplier by 1.7%
Svet_ta [14]

Answer:

times by 1.17

Step-by-step explanation:

hope this helps!

please give me a brainliest!!<3

3 0
3 years ago
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A document that is 35 in. By 40 in. Is redrawn at 1 1/2 scale and then redrawn at 1/4 scale. What are the final dimensions of th
Andru [333]
The dimension of the document is 35 inches by 40 inches.
It is redrawn at a scale of 1 1/2 or 3/2 or 1.5
The dimension will be:
35 * 1.5 = 52.5 in
40 * 1.5 = 60 in

Then redrawn again at 1/4 or 0.25
52.5 * 0.25 = 13.125 in
60 * 0.25 = 15 in

So the final dimensions of the drawing is 13.125 in by 15 in



5 0
3 years ago
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