In order to use the elimination method<span>, you have to create variables that have the same coefficient—then you </span>can eliminate<span> them. Multiply the top </span>equation<span> by 5. Next add the </span>equations<span>, and </span>solve<span> for y. Substitute y = 10 into one of the original </span>equations<span> to find x.</span>
Answer:
a, 6
Step-by-step explanation:
7x + 2y = 48
7x + 2(3) = 48
7x + 6 = 48
7x = 48 - 6
7x = 42
x = 42 / 7
x = 6
Length of rectangle
Rectangle 1) 23m
Rectangle 2) 14yd
Width of rectangle
Rectangle 1) 36m
Rectangle 2) 3.5yd
An expressions is an equations but without the equal sign ( = ) and without the solution ( the answer)
The formula To find the area of a rectangle is
A = base * height
or
A = length * width
Rectangle’s area written in as an expression
Rectangle 1) 23 * 36
Rectangle 2) 14 * 3.5
To find the area, you multiply the numbers
23 * 36 = 828
14 * 3.5 = 49
Rectangle’s area written as a number
Rectangle 1) 828m
Rectangle 2) 49yd
No explenation, but m is 25
Since f(2) is not given in the function definition, you must use f(n) with n=2. That tells you
... f(2) = -29 -f(1)
Now, f(1) is defined, so use that value.
... f(2) = -29 -(-16) = -29 +16
... f(2) = -13
