Write an equation then find the angle measure for A. 25 points and brainliest.

A

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 angles and equate to 180

4 + 3x + 3x + 14 + 90 = 180 , simplify left side

108 + 6x = 180 ( subtract 108 from both sides )

6x = 72 ( divide both sides by 6 )

x = 12

Then

∠ A = 4 + 3x = 4 + 3(12) = 4 + 36 = 40° → A

11.25  years

Step-by-step explanation:

Given data

P=3000

R= 5%

A=5200

simple interest formula is

A=P(1+r)^t

t = ln(A/P) / ln(1 + r)

t= ln(5200/3000)/ln(1+0.05)

t=ln(1.73)/ln(1.05)

t=0.54/0.048

t=11.25  years