Question

E, If the angles of a triangle are (3x+10)°, (4x+20) and (5x+30)°. The measure of each angle:
(a) 50°, 100°, 30° (b)40°, 60°, 80°
(c) 90°, 10°, 80°
(d) 70°, 10°, 100°
The angles of a triangle are in 3:4:5. Then the angles are:
(a) 50°, 100°, 30° (b)45°, 60°, 75°
(C) 70°, 80°, 30°
(d) 40°, 60°, 80°
. If x=2 is zero of polynomial P (x) =2x2-3x +7a, then a is:
(a) 17
(b) 16
(c) 10
(d) 5​

Answer 1

(3x+10)+(4x+20)+(5x+30)=180

12x+60=180

12x=120

x=10

∴3x+10=40

 4x+20=60

 5x+30=80

Correct answer = (b)

3x+4x+5x=180

12x=180

x=15

∴3x=45

 4x=60

 5x=75

Correct answer = (b)

I dont know the third

Hope it helps :)

Answer 2

Step-by-step explanation:

Third question is not correct

HOPE IT HELP YOU