A triangle has a perimeter of 30cm. Side y is twice as long as side x. Side z is 4 less than side c.

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount