Step-by-step explanation:
everything can be found in the picture
12:7
because you add 7 and 5 and then there is the 7 for the book weight
The answer is 390km. You just multiply 130 x 3.
The answer for f(x)-g(x) is .The solution can be obtained by use of concept of functions.
<h3>What is a function?</h3>
A function, in mathematics, can be defined as an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).It useful in mathematical representation of scientific quantities.
We can perform addition and subtraction operations on functions.
The given function f(x) and g(x) are
The solution for f(x)-g(x) is .
To know more about functions visit:
brainly.com/question/12431044
#SPJ9
Answer:
a*(20-a)
Step-by-step explanation:
Let's assume that the length of the garden is a the width is b and the area is s.
b = 40/2 - a = 20-a
s =a*(20-a)=-a^2+20a=-(a-10)^2+100
then,
when a=10, max(-(a-10)^2) =0, max(s)=100