Find the value of the variable using these steps.
0.4x + 3.9 = 5.78
1. subtraction property of equality
2. division property of equality
x =

There are 12 boy and13 girls in a class. if the teacher randomly chooses a student’s name out of a hat what is the probability it will be a 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.

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.