Answer:
13.7
Step-by-step explanation:
to work this out you need to find the area of the square.
The formula for working out the area of a square is to multiply the length and the width together.
So you would multiply 8 by 8 to give the area of this square.
You would then need to work out the area of the circle using the formula:
=50.27
Then to work out the area shaded you will subtract the area of the circle from the area of the square to give you the area of the shaded region.
=13.73
rounded to 13.7
This is for question 22
Answer:
irrational
Step-by-step explanation:
pi is irrational, so even thought sqrt(4) is rational, this product is irrational.
Answer: =165
Step-by-step explanation: 
Answer:
3) -11
Step-by-step explanation:
f(-3)=5*(-3)+4
f(-3)=(-15)+4
f(-3)=-11
Answer:
annual growth rate m = 637.5 people / year
Step-by-step explanation:
Solution:-
- The scatter plot displaying the city's population was modeled by a linear equation of the form:
y = m*x + c
Where, m and c are constants.
- The scatter plot displayed the following relation of the city's population (p):
p = 637.5*t + 198,368.1
Where, p : The population in t years after after 1990
t : The number of years passed since 1990.
- The slope of the graph "m = 637.5" denotes the rate of change of dependent variable with respect ot independent variable:
dp / dt = m = 637.5
- So the rate of change of population per unit time t since 1990 has been constant with a an annual growth rate m = 637.5 people / year
