A 20% acid solution is mixed with a 70% acid solution to get 100 liters of a 50% solution. If x= the amount of 20% solution and y = the amount of 70% solution, which of the following expressions equals 500?
0.2x+0.7y
20x + 70y
2x+7y

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'.

you divide them and then you get the answer i took this class this year

step-by-step explanation: