1. and are two independent measurements. =10±1and =30±2, where 10 and 30 are the means of the measurements and , respectively. Also, 1 and 2 are the standard deviation (uncertainty) associated with the measurements and , respectively. Thus, these measurements can be treated as independent random variables. Find the mean, variance, and standard deviation of the following combinations. a)1=2+2
b)2=−3+1

Are triangles the congruent? write the congruency statement. what is the congruency that proves they are congruent? what is the perimeter of ∆pqr?

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?

Why is x= 4 a solution to the proportion 14/x 56/1 6