1which method would you use to solve the system below? explain your reasoning,
x+y=300
x+3y=18
2. can all systems be solved using any method? explain.

We would use the first equation to solve the second.

First, rewrite x+y=300 as x=300-y

Now we can substitute that for x in the second equation, allowing us to only have to solve for y.

300-y+3y=18

300-4y=18

-4y=-282

4y=282

Now, divide both sides by 4 to isolate x.

Y= 70.5

Now that we know the value of y, insert that in our first equation.

X=300-70.5

X=229.5

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet