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VMariaS [17]
2 years ago
12

June has $1.95 in dimes and nickels. She has a total of 28 coins. How many of each type of coin does she have?

Mathematics
1 answer:
BartSMP [9]2 years ago
3 0

Answer:

She has 11 dimes and 17 nickels

Step-by-step explanation:

dimes --- d

nickels -- n

Equation with number of coins: 
n+d = 28
n = 28-d

10d + 5n = 195


Divide by 5

2d + n = 39

sub in the other equation:

2d + 28-d = 39
d = 11
n = 28-11 = 17

She has 11 dimes and 17 nickels

check:

total = 11 + 17 = 28 , check!

value: 10(11) = 5(17) = 195 , check!

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Rename 5/6 and 5/8 using the least common denominator.
Marina CMI [18]

Answer:

5/6 = 20/24

5/8 = 15/24

Step-by-step explanation:

These are the answers because:

1) First, the least common denominator is 24 because 8 x 3 is 24 and 6 x 4 is 24

2) Next, multiply the numerators with the same number you multiplied with the denominator

5 x 3 = 15

5 x 4 = 20

3) Therefore, the answers are:

5/6 = 20/24

5/8 = 15/24

Hope this helps!

6 0
3 years ago
Please help I'am very lost on this one thank you all
LUCKY_DIMON [66]
Large rectangles = 2*3*6
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8 0
3 years ago
Elena receives ​$131 per year in simple interest from three investments totaling ​$3000. Part is invested at​ 3%, part at​ 4% an
ioda

Answer:

Elena invested $ 1,700 at 5%, $ 700 at 4%, and $ 600 at 3%.

Step-by-step explanation:

Given that Elena receives $ 131 per year in simple interest from three investments totaling $ 3000, and part is invested at 3%, part at 4% and part at 5%, and there is $ 1000 more invested at 5% than at 4%, to find the amount invested at each rate, the following calculations must be performed:

1500 x 0.05 + 500 x 0.04 + 1000 x 0.03 = 75 + 20 + 30 = 125

1600 x 0.05 + 600 x 0.04 + 800 x 0.03 = 80 + 24 + 24 = 128

1700 x 0.05 + 700 x 0.04 + 600 x 0.03 = 85 + 28 + 18 = 131

Therefore, Elena invested $ 1,700 at 5%, $ 700 at 4%, and $ 600 at 3%

7 0
3 years ago
Is (2,17) a one solution, no solution, infinite solution,or two solution
WARRIOR [948]

Answer:

one solution

Step-by-step explanation:

because it's a gksbn smksidihdbd jaiaigsvs j

3 0
3 years ago
If 2/3 of a cup of pancake mix makes 6 pancakes. How much will 3 1/3 cups of pancake mix, how many pancake does it make?
sergey [27]
31/3: 2/3= 5
5X6=30
All you have to do is divide 31/3 by 2/3 and it equals 5 then 5X6=30
8 0
3 years ago
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