zoe has a total of 16 coins. some of her coins are dimes and some are nickels. The combined value of her nickels and dimes is 1.35. How many nickels and dimes does she have?

Given:

In 16 coins some coins are dimes and some are nickels.

The combined value of her nickels and dimes is 1.35.

To find:

The number of nickels and dimes.

Solution:

We have,

Number of total coins = 16

Combined value = $1.35

Let x be the number of nickels and y be the number of dimes.

Total coins:              ...(i)

We know that,

1 nickel = $0.05

1 dime = $0.10

Combined value:          ...(ii)

From (i), we get

          ...(iii)

Putting this in (ii), we get

Divide both sides by -0.05.

Putting x=5 in (ii), we get

Therefore, the number of nickels is 5 and the number of dimes is 11.

the answer is 200

step-by-step explanation:

the way the question is worded, it seems to imply the $264 interest is simple interest, not compound interest.

the simple interest for 2 years is $264; the simple interest for 1 year is $132.

$132 interest on a $600 investment means an interest rate of (132/600)*100 = 22%.

the value of $200 at 22% interest compounded annually for three years is

200%281.22%29%5e3

the amount of interest is that value, minus the original $200.

part d

step-by-step explanation:

theresa talked her parents into getting sd cards for her phone and her brother’s phone. inserting an sd card into a phone gives it more storage. they both get 8-gigabyte sd cards. how many bits of storage come with each sd card? type your answer in both scientific and standard notation.