In a pile of coins, there are 7 quarters than nickels. if there is a total of 2.65 in coins, how many total coins are there? how many of each type of coin is in the pile?

In the pile there are 10 quarters and 3 nickels.

Step-by-step explanation:

Given:

Total amount of money  = $2.65

Let number of nickels be 'n'.

Also Let number of quarters be 'd'

Now we now that;

nickels 'n' =$0.05

Quarters 'q' = $0.25

So the equation can be framed as;

Now Given:

there are 7 more quarters than nickels.

So we can say that;

Now Substituting equation 2 in equation 1 we get;

Now Subtracting both side by 1.75 using subtraction property of equality we get;

Now Dividing both side by 0.3 using division property of Inequality we get;

Now Substituting the value of n in equation 2 we get;

Hence In the pile there are 10 quarters and 3 nickels.

europa2433

europa2433

step-by-step explanation:

pentagon

step-by-step explanation:

the coordinates   a(5, -2), b(3,-1),c(-4,-4) d(-3,8) and e(-1,4) forms the vertices of the polygon when they are connected in order.

in order to classify that which polygon is it with the given coordinates, first count the number of vertices and then count the number of sides it can make with these vertices.

since, the given coordinates have five vertices, therefore, it will make five sides. moreover, pentagon is regular in nature therefore it will be convex.

now, a polygon with five sides is known as pentagon, therefore, the given polygon is the pentagon.