Amy has 3 children, and she is expecting another baby soon. her first three children are girls. what is the probability that the fourth baby is another girl?

Will give are given that xy is parallel to zw. if xz is a transversal that intercepts xy and zw, angle angle alternate interior angles. since xy is parallel to zw, we know that these angles are we also know that angle xvy and angle zvw are , and thus congruent. we can conclude that △xyv ~ △zwv using the similarity theorem.

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?