Indicate which property is illustrated in Step 2. Step 1 6x + 3 + 7x + 4 = (6x + 3) + (7x + 4)
Step 2 = 6x + (3 + 7x) + 4
Step 3 = 6x + (7x + 3) + 4
Step 4 = (6x + 7x) + (3 + 4)
Step 5 = (6 + 7)x + (3 + 4)
Step 6 = 13x + 7

A.
distributive
B.
associative
C.
commutative
D.
arithmetic fact

Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

How to solve a simultaneous equation involved with fractions?