What is the formula for the perimeter of a rectangle? It is 2L + 2W, where L is the length and W is the width. We can always replace the unknown quantity after the word "than" in these types of problems with the variable x. Our problem would then be " a rectangular garden has a length that is five less than twice x." In this case, the unknown quantity after the word "than" is the width. So, if we let x represent the width, then the length can be represented by 2x - 5. Now, we can plug into the perimeter formula. 2(2x - 5) + 2x = 50
The image below shows how to solve this equation.
The perimeter of the rectangle is then 10
Answer:
x = -10/7
Step-by-step explanation:
Assume that you meant (2/4)x - (1/5)x = x - 1. The parentheses are important for clarity.
Start the solution by combining the x terms. Note that the LCD here is 20, and that the problem thus becomes
(10/20)x - (4/20)x = x - 1
This simplifies to (6/20)x = x - 1, or
(3/10)x = x - 1
Note that 'x' = '10/10x', and so (3/10)x = (10/10)x - 1, or
-1 = (7/10)x
Multiplying both sides by 10, we get 7x = -10, and therefore x = -10/7
The correct option is (B) Explanation:
Add all the boxes:
There are 16 (x^2) boxes;
There are 8 (x) boxes;
And the constants = 1
So it becomes:
And the product is (4x+1)(4x+1)
4x(4x+1) + 1(4x+1)
16x^2 + 4x + 4x + 1
(Same)
Here’s one equation. y=2x+9
Answer:
B) 6cm x 3cm
Step-by-step explanation:
Volume of a rectangular box is length * width * height
In our case that means
(length * width, also known as base) * 5 = 80
this means the base has to be 16 cm^2
This means the only option that doesn't work is B, which would be 18 cm^2