One of the greatest strengths of behavioral psychology is the ability to clearly observe and measure behaviors. Weaknesses of this approach include failing to address cognitive and biological processes that influence human actions.
Right away we see that expressions (a), (b), and (d) are equivalent, since addition is commutative: $2x + 8 = 8 + 2x$. We now only have to check (c) and (e). If $x=0$, (c) and (e) have the value 4, whereas (a), (b), and (d) have the value 8.So (c) and (e) are not equivalent to (a), (b), and (d).Moreover, if $x=1$, then (c) has the value 6 and (e) has the value 5, so those two expressions are not equivalent either.For (c), we can use the distributive property and decompose one of the numbers to write two equivalent expressions: $$ \begin{align} &2x+4 \\ &2(x+2) \\ &2(x+1+1) \end{align} $$.o (c) and (e) are not equivalent to (a), (b), and (d). Moreover, if $x=1$, then (c) has the value 6 and (e) has the value 5, so those two expressions are not equivalent either. For (c), we can use the distributive property and decompose one of the numbers to write two equivalent expressions:
Report Abuse. 7/10 becuz: 1) 2 5/8 divided by 3 3/4 is equal to 21/8 divided by 15/4. 2)then, you would use the reciprocal of 15/4 by switching the fraction around to 4/15. 3)After u do that, u would change the division sin to a multiplication sign and get the equation 21/8 times 4/15. 5/8 divided by 3 3/4 is 7/10 2+5/8 = 16/8 + 5/8 = 21/8 and 3+3/4 = 12/4 + 3/4 = 15/4 21/8 divided by 15/4 21/8....... 21/8 * 4/15 .... 21/8 * 8/30 ------ = --------------- = ----------------- = 21/30 = 7/10 15/4 ..... 15/4 * 4/15 .... 1.