Jennifer had some money in her pocket. She spent $1.35, which left her with $2.30. Write an equation or an inequality to find the original amount of money she had in her pocket.

Equation: X-1.35= 2.30

Value of X: x=3.65

Step-by-step explanation:

You can choose whatever variable you want to represent the original amount of money Jennifer had in her pocket. I decided to use X as my variable.

If X represents the original amount of money Jennifer had in her pocket, then I can write this equation:

X-1.35= 2.30

Essential what this equation shows is that Jennifer spends $1.35 of what she originally has, which is x. After she spends that she's left with $2.30. This is how we solve for x, also known as the original amount Jennifer had in her pocket:

X-1.35= 2.30

(we will add 1.35 to each side because we what to balance out the equation and the inverse operation of subtraction is addition)

X= 3.65

So Jennifer originally had $3.65 in her pocket before she spent the $1.35

( Hope this helps :). Let me know if there's any confusion in my answer/explanation)

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet