Determine the value of the variable in the simplified expressions. What is the value of x in this simplified expression? (Negative j) Superscript negative 7 = StartFraction 1 Over (negative j) Superscript x EndFraction x = What is the value of y in this simplified expression? k Superscript negative 5 + m Superscript negative 10 = StartFraction 1 Over k Superscript y EndFraction + StartFraction 1 Over m Superscript 10 EndFraction y =

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8  

35-60 students are taking math.

there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation: