You have a jar full of nickels and dimes there are a total of 117 coins the value of the coins is $8.55 how many of each do you have?

n= each nickle = 0.05 dollars

d= each dime = 0.1 dollars

so

and

solving the 2 equations for the 2 variables:

b. an equilateral triangle inscribed in a circle

step-by-step explanation:

we are given the figure of two circles having a triangle inside.

now, we know that,

"when a figure is lying inside an another figure, then the outside figure is known as circumscribed figure and the figure lying inside is referred to as the inscribed figure".

as we see that, the circles are containing the triangle completely.

thus, the circles are the circumscribed figures and the triangle is the inscribed figure.

hence, we get, 'an equilateral triangle is inscribed in a circle'.