Answer:
The answer is Yes it is proportional
Step-by-step explanation:
I just got it right on Khan.
Answer: It is proportional
Step-by-step explanation:
I got it right on khan academy
The cost of three books are $4, $8 and $12.
The linear equations in one variable is an equation which is expressed in the form of ax + b = 0, where a and b are two integers, and x is a variable and has only one solution.
According to the given question
We have
Number of books purchased by Drew = 3
Total cost of the three books = $24
Cost of each book is multiple of 4.
Let the cost of three books be 4x, 8x and 12x.
So, we have
A linear equation in one variable
4x + 8x + 12x = 24
⇒ 24 x = 24
⇒ x = 1
Therefore, the cost of three books will be
4x = 4 × 1 = $4
8x = 8 × 1 = $8
12x = 12 × 1 = $12
Learn more about the linear equation in one variable here:
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The Area of the park is 6.25 square kilometers.
Therefore, we should have:
To determine the perimeter of the rectangle = 2 x (length + wide)
P = 2 (L + W)
P = 2L + 2W
Recall the distance around the park is 12.5,
Hence,
= 12.5 = 2 (4x) + 2 (x)
= 12.5 = 8x + 2x
= 12.5 = 10x
X =
X = 1.25
To determine the area, the formula for area is (A = W x L)
A = X x (4X)
A =
A = 4 x
A = 4 x (1.25 x 1.25)
A = 4 x 1.5625
A = 6.25 square kilometers
Thus, the area of the park is 6.25 square kilometers.
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