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2 years ago

A square garden has 49 square feet. So the perimeter of the garden must be----feet.

Mathematics

2 answers:

lianna [129]2 years ago

7 0

The side length of a square is the square root of the area:

Side length = √49 = 7 feet.

The perimeter of a square is 4s = 4*7 = 28 feet.

babymother [125]2 years ago

5 0

Answer:

Step-by-step explanation:

If the area of the garden is 49 ft^2 and all sides are equal because it's a square, we can take the square root of 49 to get a side length.

The square root of 49 ft^2 is 7 ft.

Since there are 4 sides to a square, we multiply the length of one side by the number of sides to get the total perimeter.

4 x 7 ft = 28 feet total

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3 years ago

There are 7 acts in a talent show.

lara31 [8.8K]

Answer:

Event A: 1/35

Event B: 1/840

Explanation:

Event A

For the event A, the order of the first 4 acts does not matter.

The number of different four acts taken from a set of seven acts, when the order does not matter, is calculated using the concept of combinations.

Thus, the number of ways that the first four acts can be scheduled is:

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And the number of ways that four acts is the singer, the juggler, the guitarist, and the violinist, in any order, is 1: C(4,4).

Therefore the probability of Event A is:

$P(A)=1/35$

Event B

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Therefore, the probability of Event B is:

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