Consider the calculation x - y+(-z) where x and z are positive real numbers and y is a negative real number. i) What are the directions of motion for this calculation?

ii) is the final answer positive, negative, or undetermined?

i) Right, right, left
ii) Positive

i) Right, left, left
ii) Undetermined

i) Right, left, left
il) Negative

i) Right, right, left
ii) Undetermined

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.  

i dont know if you cant find a way its best to actually add all of them start from 105 tho

step-by-step explanation:

i think the amount would be $140.62

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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