If y = 3 1. 10 * y^2 + 4 * y^2 = 2. 5 * y^4 - 3* y^2 = 3.5 * y + 3* y^3 = 4. 4* y^2 + 5 * y^5 = If a = 4 1.5a - 1 = 2. 2a + 3 = 3. 7 - 2a = 4. 4 (2a - 4) = 5. a + 3 = 6. a (a + 1) = 7. a^4 =

were is the equation

dont trust me im no expert these losers made me fail a test bro this sucks

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: