Mathematics, 18.12.2019 06:31 alliehall2002

Trey has 180 coins in his piggy bank. of these coins,1/12 of the coins are dimes,2/9 are quarters,1/6 are nickels, and the rest are pennies. how many pennies does trey have in his piggy bank?

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180 coins total.

You need to find out how many pennies there are out of the 180 coins in Trey's piggy bank. So, you need to first find the total number of the other coins in the piggy bank. To do so, multiply each fraction by 180.

Dimes:
1/12 * 180 = 15 dimes

Quarters:
2/9 * 180 = 40 quarters

Nickels:
1/6 * 180 = 30 nickels

Now, you can add up the dimes, quarters, and nickels and subtract that from the total 180 coins to find out how many pennies Trey has in his piggy bank.

180-(15+40+30)=95
180-85=95

Answer from: autumnskye1

Total=pennies+dimes+quarter+nickles
total-dimes-quarters-nickles=pennies

find how many of each
1/12 of all are dimes
1/12 times 180=15 dimes

2/9 of all are quarters
2/9 times 180=40 quarters

1/6 are of all are nickles
1/6 times 180=30 nickles

toatl=180
180-15-40-30=pennies
95=pennies

he has 95 pennies
(anohter harder way is to add alll fractions and find the fraction of pennies)

1/12+2/9+1/6=3/36+8/36+6/36=17/36
17/36+pennies=total=36/36
pennies=19/36 of total
pennies=19/36 times 180
pennies=95

95 pennies

Answer from: Quest

(a) the volume of the cone is 20/3 in3

hence, option a is correct.

Answer from: Quest

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

$4/2 = 2\\7/3.5=2\\8/4=2\\10/5=2$

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

$y=\frac{x}{2}$

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.

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