Mr. Pilgrim has a square backyard with an area of 3,600 meters. What is the perimeter of his fence?

Perimeter of his fence = 120 m

Step-by-step explanation:

Given:

Area of square land = 3,600 m²

Find:

Perimeter of his fence

Computation:

Area of square land = 3,600 m²

4a² = 3,600 m²

a² = 900 m²

a = 30 m

Perimeter of his fence = 4a

Perimeter of his fence = 4 x 30

Perimeter of his fence = 120 m

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.