Can somebody help me with problem 1

90 degrees

90 degrees

3x + 3 = 90

x = 29

Step-by-step explanation:

(3x + 3) means the angle at K, I assume.

the angles IKH and JKH are the same and 90 degrees each, as the height stands perpendicular on the side JI.

so,

3x + 3 = 90

3x = 87

x = 29

Step-by-step explanation:

In the given triangle HIJ,

HK is the altitude (by the definition of the altitude of a triangle)  

Therefore, m∠HKI = m∠HKJ = 90°

Equation for the given angles will be,

(3x + 3)° = 90°

3x = 87

x = 29

2"(3a+2)+(2a-1)"

Step-by-step explanation:

2(5a+1)

10a+2