PLWASE HELP ME ON THE PHOTO ATTACHED ASAP

5

Step-by-step explanation:

Start by making the fraction easier to subtract by making the fraction an improper fraction. Multiply 7 by 3 and add it to 2, making the first fraction 23/3. For the second fraction, multiple 3 by 6 and add it to 1 to make it 19/6.  23/3 - 19/6 still cannot be subtracted so you have to multiply the first fraction by 2. 23 times 2 is 46, so the fraction is now 46/6 minus 19/6. 49 - 19 = 30. 30/6 = 5 because six can go into 30 5 times.

answer: on kudzu, being female and being green are independent events.

step-by-step 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