In the figure below, abc is a right triangle. a+b= 150 degrees, and c+d= 35 degrees. find x.
a. 150
b. 115
c. 85
d. 25

Alright, lets get started.

These two triangles ABC and ACD are jointly forming a polygon having 4 sides ABCD.

The sum of all internal angles of a polygon having 4 sides = 360

∠A + ∠B + ∠C + ∠D = 360

Plugging the values of each angle

Subtracting 275 from both sides

°

Hence the option is C. (85) : Answer

Hope it will help :)

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500