Which equation would be solve the following problem? the height of a triangle is 5m less than its base. the area of the triangle is 42m^2.
find the length of the base?

42=x(x-5)

42=1/2(x)(x-5)

42=x^2-5

42=1/2(x^2-5)

first correct answer will make brainliest

Part 1)

Part 2) The length of the base is

Step-by-step explanation:

Part 1) Which equation would be help solve the following problem?

Let

x----> the length of the base of a triangle

y----> the height of a triangle

we know that

The area of a triangle is

so

------> equation A

-----> equation B

Substitute equation B in equation A  

Part 2) Find the length of the base

we have

solve for x

Solve the quadratic equation by graphing

The solution is

see the attached figure

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