If 20 apples cost $7, what is the unit cost?
1 answer:
You might be interested in
We are asked to solve for the width "x" in the given problem. To visualize the problem, see attached drawing.
We have the area of the swimming pool such as:
Area SP = l x w
Area SP = 10 * 16
Area SP = 160 feet2
Area of the swimming pool plus the sidewalk with uniform width:
Area SP + SW = (10 + x) * (16 + x)
160 + 155 = 160 + 10x + 16x + x2
160 -160 + 155 = 26x + x2
155 = 26 x + x2
x2 + 26x -155= 0
Solving for x, we need to use quadratic formula and the answer is 5 feet.
The value of x is <span>5 feet. </span>
We have the area of the swimming pool such as:
Area SP = l x w
Area SP = 10 * 16
Area SP = 160 feet2
Area of the swimming pool plus the sidewalk with uniform width:
Area SP + SW = (10 + x) * (16 + x)
160 + 155 = 160 + 10x + 16x + x2
160 -160 + 155 = 26x + x2
155 = 26 x + x2
x2 + 26x -155= 0
Solving for x, we need to use quadratic formula and the answer is 5 feet.
The value of x is <span>5 feet. </span>
Answer:
- 22.5" < w < 23.25"
Step-by-step explanation:
<em>Refer to attached</em>
- 82 model has a width of 22 1/2"
- 92 model has a width of 23 1/4"
Calvin wants his surfboard be wider than 82 model and narrower than 92 model.
The measurement w of this surfboard could be greater than 22 1/2" and smaller than 23 1/4":
- 22.5" < w < 23.25"
- 23" would be an example
