Answer:
use own words
Step-by-step explanation:
An expression is just a mathematical phrase. In this tutorial, you'll learn about two popular types of expressions: numerical and algebraic expressions. A numerical expression contains numbers and operations. An algebraic expression is almost exactly the same except it also contains variables.
in mathematics, an algebraic expression is an expression built up from integer constants, variables, and the algebraic operations (addition, subtraction, multiplication, division and exponentiation by an exponent that is a rational number)
One laptop would be 900$, 3600$/4 laptops.
Answer:
27 vertical posts and 36 horizontal rails
Step-by-step explanation:
If Max builds 1style of fence with each section having 3vertical posts and 6horizontal rails, to calculate the number of posts and rails that he need for a fence that will be 9 sections long, we will use the following equality;
For Posts:
1section = 3 vertical posts
9 sections = x
Cross multiply
x × 1 = 9× 3
x = 27
Hence Max will need 27vertical posts for a fence that is 9sections long
For the rail:
1 section = 6 horizontal rails
6 sections = y
Cross multiply
y× 1 = 6 × 6
y = 36
Hence Max will need 36 horizontal rails for a fence that is 9sections long.
In total Max will need 27 vertical posts and 36 horizontal rails for a fence that is 9sections long
