I think the answer is c because Bill is surveying every fourth person who enters the mall, which would be the population surveyed. Hope I helped! (Let me know if I got it wrong)

7 0

3 years ago

Simplify -4x - x. -5 O-4x O-3x

meriva

Answer:

-5x

explanation:

7 0

3 years ago

A store has a total of 15 bicycles and tricycles. There are 37 wheels. How many tricycles does the store have?

Vlad1618 [11]

X+y=15
2x+3y=37

15-x=y
2x+3(15-x)=37
2x+(45-3x)=37
2x-3x+45=37
-1x=-8
x=8

x is the amount of bikes, so there are 8 bikes. 8x2=16.
37-16=21
21/3=7

There are 7 tricycles.

6 0

3 years ago

Read 2 more answers

An just finished taking statistics, and wants to do a survey on the average salary of Spring 2019 HCC graduates. She calculates

Zanzabum

Answer:

The appropriate answer is "256".

Step-by-step explanation:

Given:

Standard error,

SE = 128.13

Standard deviation,