14. The area of a rectangle is 375 square inches and it’s perimeter is 80 inches. Find both the length and width.

Length   inches

Width inches

Step-by-step explanation:

Let = length of rectangle, = width of rectangle

Given the area and the perimeter of the rectangle, we can write:

So:

Now, we can use substitution to find the value of :

(Quadratic equation)

∴

We can use substitution again to find the value of

∵ Length usually refers to the longer side of a rectangle, ∴ length inches and width inches.

Hope this helps :)

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

to find the total number of combinations, multiply the quantity of each item by each other:

2 pairs of shoes x 3 pairs of shorts = 6 different combinations.