Please help how do i get c

Work Shown::

The square angle marker tells us that the angle is 90 degrees.

For any triangle, the three angles always add to 180 degrees.

(angle1)+(angle2)+(angle3) = 180

(2x+3)+(5x+17)+(90) = 180

7x+110 = 180

7x = 180-110

7x = 70

x = 70/7

x = 10

Using this x value, we can find the two missing angles

2x+3 = 2*10+3 = 23

5x+17 = 5*10+17 = 67

Then as a check, we see

(angle1)+(angle2)+(angle3) = (23)+(67)+(90) = 180

which helps confirm the answer.

step-by-step explanation:

6.48/4 4 goes into 6.48 1.62 times