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loris [4]
2 years ago
8

Sasha has 3.20 in U.S. coins. She has the same number of quarters and nickels. What is the greatest number of quarters she could

have?
Mathematics
2 answers:
RSB [31]2 years ago
8 0

Answer:

10 quarters = $2.50

10 nickels = $0.50

that leaves $0.20 for other coins (dimes / pennies)

Step-by-step explanation:

First, suppose she has only quarters and nickels and no other coins.  Then if C is the identical number of coins of each type, then 5C + 25C = 320, so 30C = 320 and 3C = 32, but there is no integer solution to this.  So she must have at least one other type of coin.

Assume she has only quarters, nickels, and dimes.  Then if D is the number of dimes, 5C +  25C + 10D = 320, which means 30C + 10D = 320, or 3C + D = 32.  The smallest D can be is 2, leaving 3C = 30 and thus C = 10.  So in this scenario she would have 10 quarters, 10 nickels, and two dimes to make $2.50 + $0.50 + $0.20 = $3.20.

This has to be the highest number, because if she had 11 quarters and 11 nickels, that alone would add up to 11(0.25) + 11(0.05) = $3.30, which would already be too much.

Nataly_w [17]2 years ago
3 0

Answer:

2.50 coins

Step-by-step explanation:

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Jose invested $5000 into a fund with an interest rate of 4.8%. How much interest would he earn after 2 years? A) $240 B) $24,000
pogonyaev

Answer: C) $480  


Step-by-step explanation:

Given: Jose invested $5000 into a fund with an interest rate of 4.8%.

Therefore, Principal amount (P)$5000

Rate of interest = 4.8%

In decimal rate of interest(r)=0.048

Time (t)= 2 years

We know that the simple interest is given by

S.I.=Prt\\\Rightarrow\ S.I.=5000\times0.048\times2\\\Rightarrow\ S.I.=\$480

Hence, the interest after 2 years = $480

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3 years ago
Which expression is equivalent to −2.6+(−2.9)+(−7.1) ?
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D

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Step-by-step explanation:

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3 years ago
Read 2 more answers
What is the 8th term of the following sequence?<br> 3/25, 3/5, 3, 5
irakobra [83]

Answer:

The 8th term of the following sequence is 9375.

Step-by-step explanation:

Given the sequence

3/25, 3/5, 3, 15

As we know that a geometric sequence has a constant ratio and is defined by:

\:a_n=a_0\cdot r^{n-1}

so

\frac{3}{25},\:\frac{3}{5},\:3,\:15

\frac{\frac{3}{5}}{\frac{3}{25}}=5,\:\quad \frac{3}{\frac{3}{5}}=5,\:\quad \frac{15}{3}=5

As the ratio 'r' is the same.

so

r=5

As the first element of the sequence is

a_1=\frac{3}{25}

Therefore, the nth term is computed by

\:a_n=a_0\cdot r^{n-1}

a_n=\frac{3}{25}\cdot \:5^{n-1}

Putting n = 8 to determine the 8th term.

a_8=5^7\cdot \frac{3}{25}

a_8=\frac{3\cdot \:5^7}{25}

    =\frac{5^7\cdot \:3}{5^2}

     =5^5\cdot \:3

     =9375

     

Therefore, the 8th term of the following sequence is 9375.

3 0
3 years ago
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