The area of a rectangular wall of a barn is 100 square feet. it’s length is 10 feet longer than twice it’s width. find the length and width of the wall of the barn

The length would be 30 and the width would be 20

Step-by-step explanation:

For the purpose of this, we'll set the width as x. We can then define the length as x + 10 since we know it is 10 ft longer than the width. Now we can use those along with the perimeter formula to solve for the width.

P = 2l + 2w

100 = 2(x + 10) + 2(x)

100 = 2x + 20 + 2x

100 = 4x + 20

80 = 4x

20 = x

Now since we know that the width is 20ft, we can add 10ft to it to get the length, which would be 30ft.

answer:

step-by-step explanation:

here, the total dishes = 10

dishes having meat = 3 ( chicken, meatloaf and hamburger )

thus, the probability of having meat on the chosen dishes = number of dishes having meat / total dishes

=

therefore, the probability of not having meat = 1- the probability of having meat on the chosen dishes

=

=

=

⇒ option b is correct.