20 points which property or postulate justified the statement below? "if wx=yz, then wx+rs=yz+rs" a. transitive property of equality b. addition property of equality c. segment addition postulate d. substitution property of equality

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

True or false look at the picture pls : /

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?