Mohammed has a box of coins containing only dimes
and half-dollars. there are 26 coins, and the total
value is $8.60. how many of each denomination of
coin does he have?

Mohammed has 11 dimes and 15 half-dollars.

Step-by-step explanation:

Let x be the number of dimes and y be the number of half-dollars. There are 26 coins, then

Amount in dimes = 10x cents

Amount in half-dollars = 50y cents

Total amount = 10x + 50y cents

Thus,

Solve the system of two equations:

From the first equation

Substitute it into the second equation:

Mohammed has 11 dimes and 15 half-dollars.

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column