On a trip to the museum, lance saw a replica of a circular shield used by ancient greek soldiers if the circumference of the shield is 100.48 inches, ts radius is inches and the area of the front of the shield is aboutsquare inches

If the circumference of the shield is 100.48 inches, its radius is 16 inches and the area of the front of the shield is about 803.84 square inches.

Explanation:

Circumference = 2x r x Pi implies r =Circumference / 2Pi=100.48/2x3.14=16

Area = Pi x r²=3.14 x 16²=804.84

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

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