Wis between x and y on xy. wx = x + 10, wy = x - 6, and xy = 10. which of the following equations could be used to find the value x?

1. x + 10 = 10

2. x - 6 = 10

3. (x + 10) + (x - 6) = 10

(23*2)-12=x     x=34

step-by-step explanation:

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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step-by-step explanation:

nope.   happens to me as well.

-aparri