PLEASE HELP QUICK WILL GIVE BRAINLIEST 3.2 Quadratic Functions Practice Use the Desmes calculator to determine the properties of each of the quadratic function
given algebraically
1. = -4rx-3
a. Domain:
b. Range:
c. Zero/s:
d. X-int/s:
e Y-int:
f. f(-1)=
9. if f(x) =-21 then x= and x=

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.

click to let others know, how is it

0.0

0 votes

1

report

read more on -

step-by-step explanation:

a is 8.b is 10.c is 10.5. d is -.5

step-by-step explanation:

just minus the smallest number from the biggest.

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry