Set both given equations equal to zero, then combine them into standard form equation. Simplify if possible 4x-6=4 and 4y+8=2
4x-6=-4
4y+8=2
Combined equation
A.4x-2=0
B.4y-6=0
C. x-y=2
D.4y+6=0
E.4x+2=0
F. x+y=-1

4x-6=4+4y+8=2

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answer: it's upside down and i can't read it

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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