To save money for college, Roberto is working 2 part-time jobs. He tutors geometry students and delivers pizza. For 5 hours of tutoring and 3 hours of pizza delivery, he earns $167. For 3 hours of tutoring and 1 hour of pizza delivery, he earns $89. What is Roberto's hourly rate for each job?

A. tutoring = $10 and pizza delivery = $39tutoring = 10 dollars and pizza delivery = 39 dollars

B. tutoring = $13 and pizza delivery = $34tutoring = $13 and pizza delivery = 34 dollars

C. tutoring = $22 and pizza delivery = $19tutoring = 22 dollars and pizza delivery = 19 dollars

D. tutoring = $25 and pizza delivery = $14

they are simplified

step-by-step explanation:

step-by-step explanation:

i found the koficent of the linear function and i foun c acordind to the strict formula y=kx+c and then i took 2 as an x and replacet it on the formula i found and then foun the y

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: