Which expressions are equivalent to 6g-18h6g−18h6, g, minus, 18, h? Choose 2 answers:
Choose 2 answers:

(Choice A)
A
(g-3)\cdot6(g−3)⋅6left parenthesis, g, minus, 3, right parenthesis, dot, 6

(Choice B)
B
2\cdot(3g-18h)2⋅(3g−18h)2, dot, left parenthesis, 3, g, minus, 18, h, right parenthesis

(Choice C)
C
3(2g-6h)3(2g−6h)3, left parenthesis, 2, g, minus, 6, h, right parenthesis

(Choice D)
D
(-g-3h)(-6)(−g−3h)(−6)left parenthesis, minus, g, minus, 3, h, right parenthesis, left parenthesis, minus, 6, right parenthesis

(Choice E)
E
-2\times(-3g+9h)−2×(−3g+9h)

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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