There are 4 red marbles and 7 blue marbles and 5 yellow marbles in a bag. monica will randomly pick two marbles out of the bag replacing the first marble before picking the second marble. what is the probability of monica picking a red and then blue marble?

1/4 and then 7/15

Step-by-step explanation:

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 can't solve x because it is 2 linear equation and you only have one equation