Select all that apply. Why do countries develop economic systems?
to provide economic assistance to all citizens
to decide how to handle the issue of scarcity
to protect industry from trade
to help make decisions concerning what, how, and for whom things are produced
to prevent monopolies from taking over the market

understand that i don't know the answers

will someone answer his question

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

step-by-step explanation:

where is the question is there is a formula or is there not one

25/6

step-by-step explanation:

you multiply 4 by the denominator (4*6=24) and add it to the numerator which makes it 25/6.